Current Physical Activity Recommendations Research Articles

Exercise and Schizophrenia.

Schizophrenia is a complex mental disorder that affects millions of people worldwide and has a profound impact on various aspects of life, including physical activity. The relationship between schizophrenia and physical activity is an area of growing interest in medical and health research from a physical, mental, and psychosocial health perspective. Physical activity and structured exercise have been identified as promising interventions to improve physical and psychological health outcomes of people living with schizophrenia. This chapter provides a brief overview that explores various aspects of the relationship between physical activity, exercise, and schizophrenia. The impact of schizophrenia on human movement is discussed, along with an overview of physical activity and cardiorespiratory fitness levels in adults with schizophrenia. Additionally, the influence of exercise interventions on physical and psychological outcomes will be discussed, along with current physical activity recommendations for those living with schizophrenia.

Evaluating recommendation-based dietary and physical activity strategies for prostate cancer prevention: a target trial emulation in the Health Professionals Follow-up Study.

The 2018 World Cancer Research Fund/American Institute for Cancer Research recommends sustained strategies of physical activity and diet for cancer prevention, but evidence for long-term prostate cancer risk is limited. Using observational data from 27,859 men in the Health Professionals Follow-up Study, we emulated a target trial of recommendation-based physical activity and dietary strategies and 26-year risks of prostate cancer, adjusting for risk factors via the parametric g-formula. Compared with no intervention, limiting sugar-sweetened beverages showed a 0.4% (0.0-0.9%) lower risk of lethal (metastatic or fatal) disease and 0.5% (0.1-0.9%) lower risk of fatal disease. Restricting consumption of processed foods showed a 0.4-0.9% higher risk of all prostate cancer outcomes. Estimated risk differences for clinically significant disease were close to null for strategies involving fruits and non-starchy vegetables, whole grains and legumes, red meat, and processed meat, as well as under a joint strategy of physical activity and diet. Compared with a "low adherence" strategy, maintaining recommended physical activity levels showed a 0.4% (0.1-0.8%) lower risk of lethal and 0.5% (0.2-0.8%) lower risk of fatal disease. Adhering to specific components of current physical activity and dietary recommendations may help to prevent lethal and fatal prostate cancer over 26 years.

Associations of physical activity levels with fatigue in people with inflammatory rheumatic diseases in the LIFT trial.

The overall aim of the current study was to quantify physical activity levels in inflammatory rheumatic diseases (IRDs) and to explore their role in fatigue. We conducted a secondary analysis of data from the Lessening the Impact of Fatigue in IRDs (LIFT) trial of the personalized exercise program (PEP) intervention for fatigue. Participants with IRDs were recruited from 2017 to 2019 and the current analysis used fatigue, measured by the Chalder Fatigue Scale (CFS) and the Fatigue Severity Scale (FSS), and accelerometer measured physical activity data collected at baseline and at the 6-month follow-up. Physical activity levels were quantified and associations with fatigue and effects of PEP investigated. Of the 337 included participants, 195 (68.4%) did not meet the current recommendations for moderate-vigorous physical activity (MVPA). In baseline cross-sectional analysis, many dimensions of physical activity were associated with fatigue. After mutual adjustment, overall physical activity (vector magnitude) was associated with CFS [-0.88 (95% CI -0.12, -1.64)] and distribution of time spent at different activity intensities was associated with FSS [-1.16 (95% CI -2.01, -0.31)]. Relative to usual care, PEP resulted in an increase in upright time, with trends for increases in step count and overall physical activity. People who increased overall physical activity (vector magnitude) more had greater improvements in CFS and FSS, while those who increased step count and MVPA more had greater improvements in FSS. Increasing physical activity is important for fatigue management in people with IRDs and further work is needed to optimize PEPs to target the symptoms and impact of fatigue. ClinicalTrials.gov (http://clinicaltrials.gov), NCT03248518.

Domain matters: An examination of college student physical activity participation patterns by gender and race/ethnicity

Background Physical activity (PA) consists of multiple domains, including leisure-time PA (LTPA), occupational PA (OPA), and transportation PA (TPA), though limited research has examined these domains among college students. Methods This cross sectional, online survey asked undergraduate students to self-report demographics (gender, race/ethnicity, employment) and PA (LTPA, TPA, and OPA). Participants were categorized as meeting/not meeting current aerobic PA recommendations with only LTPA and with all domains of PA. Analyses examined differences by domain and demographics. Results For participants (n = 3732) when only considering LTPA, 79% met recommendations, while considering all forms of PA resulted in 94% of students meeting recommendations. Gender and race/ethnicity differences in the odds of meeting PA recommendations were present with only LTPA, however when considering all PA domains, some disparities were no longer present. Conclusions These findings highlight how different domains of activity contribute to overall PA and the relationship with gender and race/ethnicity.

Abstract 2256: Guideline-based physical activity and physical quality of life among individuals with nonmetastatic prostate cancer: A target trial emulation in the Health Professionals Follow-up Study

Abstract Introduction: Randomized trials have shown that physical activity can improve quality of life (QOL) among individuals with cancer. In the absence of a randomized trial of adequate size and follow-up to comprehensively evaluate this relationship for prostate cancer, we aim to emulate a target trial of guideline-based physical activity strategies and 6-year physical QOL. Methods: We will use observational data on individuals in the Health Professionals Follow-up Study diagnosed with nonmetastatic prostate cancer between 2010-2016 and free of conditions that could preclude following current physical activity recommendations at baseline (first post-diagnostic questionnaire). The physical activity strategies of interest are (1) engage in ≥150 minutes of moderate activity, or ≥75 minutes of vigorous activity per week, or an equivalent combination (i.e., ≥7.5 metabolic equivalent of task [MET]-hours/week of vigorous or moderate activity) and (2) no physical activity intervention. The outcomes of interest are 6-year mean physical QOL scores (based on EPIC-CP measures of bowel function, urinary incontinence, urinary irritation/obstruction, sexual function, and vitality/hormonal function). We will adjust for baseline and time-varying risk factors using the parametric g-formula. Conclusion: These findings may help to inform clinical recommendations to improve QOL among individuals with nonmetastatic prostate cancer. Further, the proposed approach will provide a framework for future studies designed to evaluate the effectiveness of any intervention strategies to improve patient-reported outcome measures in cancer survivorship research. Table 1. Specification and emulation of a target trial using observational data from HPFS Protocol component Target trial specification Target trial emulation Eligibility criteria (1) Individuals diagnosed with non-metastatic prostate cancer between 2010 and 2016; (2) No history of other cancers (Except nonmelanoma skin cancer); (3) No history of conditions that could preclude high levels of physical activity: myocardial infarction, stroke, congestive heart failure, amyotrophic lateral sclerosis, or functional impairment (defined as difficulty climbing a flight of stairs or walking eight blocks due to physical impairment) Same as for the target trial, except: We required complete data on physical activity, birth date, and other risk factors on the pre-diagnostic questionnaire and the first post-diagnostic (baseline) questionnaire. Physical activity strategies Each individual is assigned to one of the following strategies at baseline: (1) No intervention (usual physical activity) (2) Engage in ≥1.25 hours/week of vigorous activity or ≥2.5 hours/week of moderate activity or ≥7.5 MET-hours/week of vigorous or moderate activity (an equivalent combination). Strategies are initiated at baseline and continued over follow-up. Individuals are excused from following the physical activity intervention upon the development of myocardial infarction, stroke, congestive heart failure, amyotrophic lateral sclerosis, cancer metastasis, or functional impairment. Individuals must respond to surveys at every follow-up period to assess time-varying variables. Same as for the target trial, except: (1) Follow-up periods correspond to the questionnaire cycles in the cohort study. (2) We assumed that each 2-year physical activity questionnaire accurately reflects the individual's (1) average physical activity over the previous 2-year period and (2) intended physical activity that the individual would have reported at the start of the current period under no intervention. Strategy assignment Individuals are randomly assigned to a strategy at baseline and are aware of their assigned strategy. We assumed randomization conditional on the following baseline covariates: age; employment status; primary treatment; stage; Gleason score, and prostate-specifc antigen level at diagnosis; pre-baseline values of body-mass index and physical activity. Outcomes 6-year mean quality of life scores in the following physical domains: (1) Bowel function, (2) Urinary incontinence, (3) Urinary irritation/obstruction, (4) Sexual function, (5) Vitality/hormonal function. Individuals self-report their physical quality of life on EPIC (The Explanded Prostate Cancer Index Composite) questionnaires at every follow-up period. Same as for the target trial. Follow-up periods correspond to the questionnaire cycles in the cohort study. Follow-up For each eligible individual, follow-up starts at strategy assignment (baseline) and ends upon death, loss to follow-up, or the end of follow up in December 2018, whichever happens first. Same as for the target trial. Loss to follow-up was defined as questionnaire non-response. Causal contrasts Intention-to-treat and per-protocol effect. Observational analogue of per-protocol effect. Statistical analysis Intention-to-treat analysis. Per protocol analysis: Parametric g-formula to compare 6-year physical quality of life under each strategy via mean differences, with adjustment for pre- and post-baseline prognostic factors associated with adherence and loss to follow-up. Same as for the per-protocol analysis of the target trial. Citation Format: Naiyu Chen, Rachel C. Nethery, Lorelei A. Mucci, Barbra A. Dickerman. Guideline-based physical activity and physical quality of life among individuals with nonmetastatic prostate cancer: A target trial emulation in the Health Professionals Follow-up Study [abstract]. In: Proceedings of the American Association for Cancer Research Annual Meeting 2024; Part 1 (Regular Abstracts); 2024 Apr 5-10; San Diego, CA. Philadelphia (PA): AACR; Cancer Res 2024;84(6_Suppl):Abstract nr 2256.

Abstract P349: Physical Activity Perceptions and Engagement of Patients Prescribed an Anti-Obesity Medication in a Medical Weight Loss Clinic

Introduction: Physical activity (PA) may elicit important health benefits when coupled with contemporary anti-obesity medications (AOM). However, currently there is little known about perceptions of PA and associated PA engagement of patients receiving these AOM therapies. Hypothesis: We assessed the hypothesis that PA would differ by perceptions of confidence to engage in PA, current and future importance of PA, and PA amount in patients receiving AOM treatment within the context of a medical weight loss clinic. Methods: An electronic survey was distributed to patients in a clinical research registry who were receiving treatment with an AOM at a university medical center-based weight loss clinic. The survey included questions about their perceived confidence to do structured PA or exercise regularly (PA-CONFIDENCE) and perceived importance of structured PA or exercise for management of their body weight currently (PA-IMPORTANCE) or in the future (PA-FUTURE). Participants also reported their current level of PA. Results: Survey responses were received from 96 patients. For these analyses, data were examined for patients currently prescribed a GLP-1 AOM (83 patients). High PA-CONFIDENCE was reported by 44.6% of participants, with 34.9% and 20.5% reporting moderate and low PA-CONFIDENCE, respectively. PA was 154±117 min/wk, 107±105 min/wk, and 76±77 min/wk for high, moderate, and low PA-CONFIDENCE (p=0.033). Participating in ≥150 min/wk of PA was reported by 54.1% with high, 20.7% with moderate, and 11.8% with low PA-CONFIDENCE (p=0.002). Ratings of PA-IMPORTANCE were 63.9% for high, 28.9% for moderate, and 7.2% for low. Participating in ≥150 min/wk of PA was reported by 48.2% with high, 12.5% with moderate, and 0% with low PA-IMPORTANCE (p=0.002). Ratings of PA-FUTURE were 79.5% for high, 18.1% for moderate, and 2.4% for low. Current participation in ≥150 min/wk of PA was reported by 33.7% with high, 12.5% with moderate, and 0% with low PA-FUTURE (p=0.002). Conclusions: Less than one-half of patients prescribed an AOM report confidence to engage in regular structured PA, and of those with high confidence only approximately one-half achieve current public health recommendations for PA. While more than one-half of patients report that PA is important, less than one-half engage in the recommended amount of PA. Strategies are needed to increase perceived confidence to perform and importance of PA in AOM treated patients, and to increase PA participation.

The association between work-related activities and leisure-time physical activity among Latinos

ABSTRACT Objectives Latinos engage in high levels of occupational physical activity, yet low levels of leisure-time physical activity. Limited research has examined specific work-based activities that may contribute to leisure-time physical activity for meeting current physical activity recommendations among Latinos. The purpose of our study was to examine associations between frequency of work-related exertion and standing/walking with meeting the aerobic and muscle-strengthening physical activity guidelines among Latinos and whether associations varied by nativity. Design We used cross-sectional 2015 National Health Interview Survey data on Latinos ≥18 years of age (n = 3162). Logistic regression models were used to estimate associations between the frequency of work-related activities with meeting the aerobic and muscle-strengthening physical activity guidelines. Models were adjusted for age, sex, education, Latino subpopulation, shift work, and nativity. We also examined whether associations varied by nativity. Results In adjusted models, compared with those never engaging in exertion at work, participants always exerting themselves were significantly less likely to meet the aerobic activity guideline (Odds Ratio [OR]: 0.66, 95% Confidence Interval [CI]: 0.51–0.87). Compared with those never standing/walking at work, participants seldom standing/walking were also less likely to meet the aerobic activity guideline (OR: 0.57, 95% CI: 0.34, 0.95). Models were adjusted for age, sex, education, Latino subpopulation, shift work, and nativity. When stratified by nativity, the patterns in the strength of the associations were similar, while differences were observed in the associations of work-related activities with meeting guidelines. Conclusion Our findings suggest that engaging in higher frequency of exertion and standing/walking at work are associated with being less likely to meet the aerobic physical activity guideline during leisure time among Latinos, with variation observed in meeting guidelines by nativity. Insight into physical activities performed at work could inform efforts aimed at promoting recommended levels of physical activity among Latinos.

Sarcopenia, physical activity and sedentary behavior among nursing home residents in Germany

Residents in nursing homes show a high prevalence of the musculoskeletal syndrome sarcopenia and tend not to achieve current physical activity recommendations. The aim of this study is to identify differences in physical activity and sedentary behavior of sarcopenic residents compared with nonsarcopenic and presarcopenic residents. Sarcopenia assessment was performed among 63nursing home residents in Baden-Wuerttemberg (D) using the European Working Group on Sarcopenia in Older People2 specifications. Structured activity sessions (per week), accelerometer-based physical activity (steps/day), and sedentary behavior (percentual/day) were examined. The group comparisons were determined with Kruskal-Wallis tests and Dunn-Bonferroni post hoc tests. Significant differences were found for number of steps (p = 0.005) and percentual sedentary behavior (p = 0.019). Moreover, steps per day presented significant results in group comparison for no sarcopenia (2824.4 [423-14275]) with probable sarcopenia (1703.9 [118-5663]) and confirmed/severe sarcopenia (1571.2 [240-2392]) (both p = 0.022; |r| = 0.34). Sedentary behavior demonstrated significant differences in groups with no sarcopenia (87.9% [69.1-94.3]) and with probable sarcopenia (91.7% [80.4-9835]) (p = 0.018; |r| = 0.35). Nonsarcopenic residents demonstrated ahigher number of steps and lower sedentary behavior compared with presarcopenic and sarcopenic residents. Increasing steps, reducing sedentary behavior and promoting activities of daily living can contribute to the prevention and treatment of sarcopenia in the nursing home setting.

Utility of a polygenic risk score for incident CHD: interplay with lifestyle in a multi-ethnic cohort of more than 60,000 individuals

Abstract Background The degree to which benefits of healthy eating, physical activity and not smoking are protective for coronary heart disease (CHD) based on levels of polygenic risk remains an important question. We set out to investigate whether and to what degree a favorable lifestyle could reduce the effect of high genetic risk. Methods We utilized data from the Genetic Epidemiology Resource in Adult Health and Aging (GERA) Multi-Ethnic cohort of 60,682 (mean ± SD age = 59 ± 9 years; 67% female; 18% non-European ancestry) Kaiser Permanente of Northern California (KPNC) members. We characterized the cohort at baseline in 2003-2007 by smoking status (never, former or current smoker), Mediterranean-pattern diet (MedDiet) and meeting current AHA physical activity recommendations (PAR) of at least 150 min of moderate activity or 75 min of vigorous activity per week. We stratified the cohort into three groups of CHD genetic risk (low: quintile 1, intermediate: quintiles 2, 3 and 4 combined, and high: quintile 5) using a validated 12-SNP Polygenic Risk Score (PRS) for CHD (CARDIO inCode-Score, GENinCode Plc). Incident CHD consisted of primary in-patient codes for angina pectoris, myocardial infarction, revascularization procedures or CHD death (n=2,220) through 12/31/2014; mean follow-up was 9.5 years. Results Age-adjusted CHD rates per 10,000 person-years were estimated using Poisson regression (accounting for death and health plan disenrollment) by number of favorable lifestyle factors (LF) and, within each level, by genetic risk groups (see Figure below). Genetic background provided further CHD risk stratification within each lifestyle group. The most favorable lifestyle (never smoking, MedDiet, meeting PAR) reduced the effect of high genetic risk by 59% (age-adjusted rates per 10,000 person-years 40 vs. 99) and similar reductions were observed at intermediate or low genetic risk. Conclusions Our results are consistent with an additive model of genetic risk and lifestyle as determinants of CHD. These results underscore the importance of favorable lifestyle and the need to prioritize those individuals with the highest CHD risk (most unfavorable lifestyle and high genetic risk), who will benefit the most from lifestyle advice.

Abstract 12350: The Impact of an Electronic Best Practice Advisory on Patients’ Physical Activity and Cardiovascular Risk Profile

Background: Regular physical activity (PA) is one of eight components of cardiovascular health and it is associated with numerous benefits including a lower risk of CVD. Promoting PA to sedentary patients in primary care can result in significant improvements in PA. The aims of this study were to implement a PA counseling intervention using an electronic best practice advisory (BPA), in a preventive cardiology clinic, and to assess changes in PA and CVD risk factors in a sample of patients enrolled in 12 weeks of PA monitoring. Methods: Patients were assessed with the 3-question (days/minutes/intensity) physical activity vital sign (PAVS) via their electronic patient portal prior to an office visit. Those who self-reported less than 50% of current PA recommendations prompted a BPA to their cardiologist to counsel them on improving their PA. Patients were then offered participation in remote patient monitoring wearing a Fitbit for 12 weeks. Blood pressure, waist circumference, lipids, BMI, PA (using the PAVS and Fitbit step-counts) and the six-minute walk test (for cardiorespiratory fitness) were measured at baseline and 12 weeks. Paired t -tests assessed for changes in these CVD risk factors from baseline to 12 weeks. We calculated the percent of participants who achieved a clinically important difference of 25 meters in the six-minute walk test. Results: The enrolled sample (n=59) were primarily female (51%), White adults (76%) with a mean age of 61.13±11.6 years. There was significant improvement in moderate-to-vigorous PA as self-reported by the PAVS (43±86 vs. 114±157, p=.005). There was no significant difference between week 2 step counts (baseline) and week 12 (p=.07). There was significant improvement in the distance covered (in meters) during the six-minute walk test (469±108 vs. 494±132, p=.0034) and 23 participants (42%) improved at least 25 meters. There were also significant differences in total cholesterol (163±51 mg/dl at baseline vs. 148±45mg/dl at 12 weeks; p=.0.02). No other improvements in CVD risk factors were noted. Conclusion: Patients who reported low PA and triggered a BPA for PA counseling had improvements in some, but not all, CVD risk factors. Additional counseling may be needed to improve and maintain PA levels in patients at risk of CVD.

Leisure time and occupational physical activity, overall and cardiovascular mortality: a 24-year follow-up in the OPERA study

Background In earlier studies, the health benefits of physical activity have only been related to leisure time physical activity (LTPA). High occupational physical activity (OPA) might even be harmful. The current physical activity recommendations do not separate the OPA and LTPA. We investigated the effect of LTPA and OPA on cardiovascular morbidity and mortality during long-term follow-up. We also examined how heavy work affects the benefits of leisure time exercise. Material and methods The study was part of the OPERA study and the baseline examinations were conducted between the years 1991 and 1993. The Follow-up of events continued until the end of the year 2020. Study subjects (n = 1044) were divided into four groups according to their LTPA (“no exercise”, “irregular”, “regular” and “heavy regular”) and into three groups according to their OPA (“no activity”, “mild” and “heavy”). The amount of exercise was self-reported and the exercise status was defined at the beginning of the study. Study subjects were followed up for their overall mortality (26 years), fatal and non-fatal CVD events (24 and 20 years) and heart failure (20 years). The survival analysis was performed using Kaplan–Meier curves and Cox-proportional hazard models. Results “Heavy” OPA group subjects belonging to the “irregular” (less than 1–2 times 30 min exercise per week) LTPA group experienced the lowest overall mortality compared to other LTPA groups. Also, overall mortality was increased in the “mild” (p = 0.002) and CVD mortality in the” heavy” (p = 0.005) OPA group compared to “no activity”. The incidence of heart failure was increased in the “no exercise” LTPA compared to the “heavy regular” (p = 0.015) group. Conclusions Study subjects who were in physically demanding occupations (heavy OPA) seemed to benefit from less LTPA than WHO currently recommends. Thus we suggest targeting different LTPA recommendations to different OPA groups.

Exercise Is Medicine: How Do We Implement It?

Exercise is well known to have beneficial effects on various disease states. In this paper, we broadly describe the fundamental concepts that are shared among various disease states, including obesity, type 2 diabetes (T2D), cardiovascular disease (CVD), heart failure (HF), cancer, and psychological well-being, and the beneficial effects of exercise training within these concepts. We highlight issues involved in implementing exercise recommendations and describe the potential impacts and challenges to medical professionals and patients. Problems are identified and discussed with respect to the future roles of professionals in the current built environment with its limited infrastructure to support current physical activity recommendations.

The Impact of an Electronic Best Practice Advisory on Patients' Physical Activity and Cardiovascular Risk Profile.

Regular physical activity (PA) is a component of cardiovascular health and is associated with a lower risk of cardiovascular disease (CVD). However, only about half of US adults achieved the current PA recommendations. The study purpose was to implement PA counseling using a clinical decision support tool in a preventive cardiology clinic and to assess changes in CVD risk factors in a sample of patients enrolled over 12 weeks of PA monitoring. This intervention, piloted for 1 year, had 3 components embedded in the electronic health record: assessment of patients' PA, an electronic prompt for providers to counsel patients reporting low PA, and patient monitoring using a Fitbit. Cardiovascular disease risk factors included PA (self-report and Fitbit), body mass index, blood pressure, lipids, and cardiorespiratory fitness assessed with the 6-minute walk test. Depression and quality of life were also assessed. Paired t tests assessed changes in CVD risk. The sample who enrolled in the remote patient monitoring (n = 59) were primarily female (51%), White adults (76%) with a mean age of 61.13 ± 11.6 years. Self-reported PA significantly improved over 12 weeks ( P = .005), but not Fitbit steps ( P = .07). There was a significant improvement in cardiorespiratory fitness (469 ± 108 vs 494 ± 132 m, P = .0034), and 23 participants (42%) improved at least 25 m, signifying a clinically meaningful improvement. Only 4 participants were lost to follow-up over 12 weeks of monitoring. Patients may need more frequent reminders to be active after an initial counseling session, perhaps getting automated messages based on their step counts syncing to their electronic health record.

Dose–response relationship between device-measured physical activity and incident type 2 diabetes: findings from the UK Biobank prospective cohort study

BackgroundMost studies investigating the association between physical activity (PA) and the risk of type 2 diabetes are derived from self-reported questionnaires, with limited evidence using device-based measurements. Therefore, this study aimed to investigate the dose–response relationship between device-measured PA and incident type 2 diabetes.MethodsThis prospective cohort study included 40,431 participants of the UK Biobank. Wrist-worn accelerometers were used to estimate total, light, moderate, vigorous and moderate-to-vigorous PA. The associations between PA and incident type 2 diabetes were analysed using Cox-proportional hazard models. The mediating role of body mass index (BMI) was tested under a causal counterfactual framework.ResultsThe median follow-up period was 6.3 years (IQR: 5.7–6.8), with 591 participants developing type 2 diabetes. Compared to those achieving < 150 min/week of moderate PA, people achieving 150–300, 300–600 and > 600 min/week were at 49% (95% CI 62–32%), 62% (95% CI 71–50%) and 71% (95% CI 80–59%) lower risk of type 2 diabetes, respectively. For vigorous PA, compared to those achieving < 25 min/week, individuals achieving 25–50, 50–75 and > 75 min/week were at 38% (95% CI 48–33%), 48% (95% CI 64–23%) and 64% (95% CI 78–42%) lower type 2 diabetes risk, respectively. Twelve per cent and 20% of the associations between vigorous and moderate PA and type 2 diabetes were mediated by lower BMI, respectively.ConclusionsPA has clear dose-response relationship with a lower risk of type 2 diabetes. Our findings support the current aerobic PA recommendations but suggest that additional PA beyond the recommendations is associated with even greater risk reduction.Trial registrationThe UK Biobank study was approved by the North West Multi-Centre Research Ethics Committee (Ref 11/NW/0382 on June 17, 2011).

Impact of Motor Competence Profiles on Adolescents' Physical Activity and Cardiorespiratory Fitness across Four Years.

Physical activity levels have decreased over past decades with most adolescents neither meeting the current physical activity recommendations nor demonstrating adequate cardiorespiratory fitness. Motor competence (MC) is foundational for a physically active lifestyle; however, children demonstrate significant differences in their levels of MC in a broad foundation of movement skills. This study investigated developmental patterns of physical activity and cardiorespiratory fitness in children across 4 years based on their longitudinal MC profiles. The data included annual measurements of MC, accelerometry-measured moderate-to-vigorous physical activity (MVPA), and cardiorespiratory fitness over 4 years from the age 11 to 15 (n = 1147, girls 582, boys 565). Latent profile analysis was used to identify longitudinal MC profiles and latent growth curve modeling to examine intercepts and slopes (s) of MVPA and cardiorespiratory fitness in these MC profiles. Three different longitudinal MC profiles were identified: low, moderate, and high. The MC profiles showed significant differences in intercepts of cardiorespiratory fitness and MVPA. The high MC profile showed the highest intercepts for both, but also a statistically significant decline in MVPA over time (s = -3.36, p < .001). Cardiorespiratory fitness increased similarly in all three profiles over time: low (s = 1.20, p < .01), moderate (s = 1.28, p < .001), high (s = 2.21, p < .001). These results highlight the long-term associations between different MC profiles and development of MVPA and cardiorespiratory fitness. Adolescents with lower MC demonstrated lower levels of MVPA and cardiorespiratory fitness, indicating decreased participation in physical activities that can optimally enhance cardiorespiratory fitness. However, significant differences in MVPA levels between MC profiles faded over time in adolescence, whereas significant differences in cardiorespiratory fitness remained.

The Independent Walking for Brain Health Intervention for Older Adults: Protocol for a Pilot Randomized Controlled Trial.

Extensive research suggests that physical activity (PA) is important for brain and cognitive health and may help to delay or prevent Alzheimer's disease and related dementias. Most PA interventions designed to improve brain health in older adults have been conducted in laboratory, gym, or group settings that require extensive resources and travel to the study site or group sessions. Research is needed to develop novel interventions that leverage mobile health (mHealth) technologies to help older adults increase their engagement in PA in free-living environments, reducing participant burden and increasing generalizability of research findings. Moreover, promoting engagement in moderate-to-vigorous PA (MVPA) may be most beneficial to brain health; thus, using mHealth to help older adults increase time spent in MVPA in free-living environments may help to offset the burden of Alzheimer's disease and related dementias and improve quality of life in older age. We developed a novel PA intervention that leverages mHealth to help older adults achieve more minutes of MVPA independently. This pilot study was a 12-week randomized controlled trial to investigate the feasibility of providing just-in-time (JIT) feedback about PA intensity during free-living exercise sessions to help older adults meet current PA recommendations (150 minutes per week of MVPA). Participants were eligible if they were cognitively healthy English speakers aged between 65 and 80 years without major cardiovascular, neurologic, or mental health conditions; could ambulate independently; and undergo magnetic resonance imaging. Enrollment occurred from October 2017 to March 2020. Participants randomized to the PA condition received an individualized exercise prescription and an mHealth device that provided heart rate-based JIT feedback on PA intensity, allowing them to adjust their behavior in real time to maintain MVPA during exercise sessions. Participants assigned to the healthy aging education condition received a reading prescription consisting of healthy aging topics and completed weekly quizzes based on the materials. In total, 44 participants were randomized to the intervention. A follow-up manuscript will describe the results of the intervention as well as discuss screening, recruitment, adverse events, and participants' opinions regarding their participation in the intervention. The long-term goal of this intervention is to better understand how MVPA affects brain and cognitive health in the real world and extend laboratory findings to everyday life. This pilot randomized controlled trial was conducted to determine the feasibility of using JIT heart rate zone feedback to help older adults independently increase time spent in MVPA while collecting data on the plausible mechanisms of change (frontal and medial temporal cerebral blood flow and cardiorespiratory fitness) that may affect cognition (memory and executive function) to help refine a planned stage 2 behavioral trial. ClinicalTrials.gov NCT03058146; https://clinicaltrials.gov/ct2/show/NCT03058146. DERR1-10.2196/42980.

Selected Articles from This Issue

During the COVID-19 pandemic, many colorectal cancer-related procedures were suspended, with unclear implications for colorectal cancer mortality. In this study, van den Puttelaar and colleagues used observed data and simulation modeling to estimate the impact on colorectal cancer outcomes, clinical resources, and associated tradeoffs, for longer versus shorter recovery periods to catch up procedures. The authors estimate that the disruptions may cause 4,200 to 14,400 excess colorectal cancer deaths in the US in the next 20 years, depending on the assumed extent of disruption, length of recovery period, and resources used. These estimates may help inform strategies to mitigate the broader impact of the COVID-19 pandemic or future crises.Christopher and colleagues used a data-driven approach to identify exercise trajectories over the adult life course and examined how these trajectories were associated with colon cancer risk within the NIH-AARP Diet and Health Study. Adults maintaining moderate-to-high amounts of exercise consistently throughout adulthood had a lower risk of colon cancer. Being inactive early in adulthood but increasing exercise participation by midlife was also suggestive of a lower risk. These findings are aligned with the current physical activity recommendations and add new evidence that promoting physical activity at all stages of the adult life course is needed for population-based colon cancer prevention.Few empirical data are available for older adults on the absolute risk of colorectal cancer and its associated mortality in the context of prior screening. Dalmat and colleagues address this evidence gap with estimates from a large population of screen-eligible adults ages 76 to 85 years who had a negative colonoscopy ten years ago. Estimates of cumulative incidence and mortality were 1.29% (95% CI: 1.02–1.61%) and 0.46% (95% CI: 0.30–0.70%), respectively, in eight years following screening eligibility date, after accounting for competing risk of death from another cause. Patients were approximately 90 times more likely to die from another cause than colorectal cancer, which may be an important context for older adults’ decision making.Nicotine metabolism significantly influences nicotine dependence. The goal of this study, by Perez-Paramo and colleagues, was to examine the impact of genetic variants in nicotine metabolizing enzyme genes on urinary levels of nicotine metabolites. Functional deficiency of cytochrome P450 2A6 caused multiple changes in nicotine metabolites in smokers’ urine. Genetic polymorphisms in multiple functional metabolizing enzyme genes showed a significant impact on urinary levels of many nicotine metabolites. These data suggest that multiple genes in several pathways are involved in the metabolism of nicotine, which may influence nicotine dependence and smoking behavior.

Physical Activity Measured with Accelerometer in Children and Youth with Juvenile Idiopathic Arthritis Compared with Peers in Iceland

Purpose: To compare physical activity in children with juvenile idiopathic arthritis and age-matched peers. Materials and methods: Daily physical activity was measured for seven consecutive days with activPALTM accelerometer in 8–18- year-old children with juvenile idiopathic arthritis (n=28) and age- and sex-matched controls (n=35). The main variables were daily steps and duration of time in moderate to vigorous physical activity. A mixed model analysis of variance was used for statistical analysis. Results: The groups were comparable in terms of age, height, weight, body mass index and sex ratio. There was no difference in physical activity between the groups, measured in daily steps (p = 0.83) and duration of time in moderate to vigorous physical activity (p = 0.92). Both groups had lower physical activity at weekends than weekdays (p &lt; 0.001). No interaction was observed between groups and days of the week regarding daily steps (p = 0.89) and time spent in moderate to vigorous physical activity (p = 0.60). Neither group met the current physical activity recommendations. Conclusion: Physical activity of children with juvenile idiopathic arthritis in Iceland is comparable to age-matched peers without juvenile idiopathic arthritis. There is a need for intervention to increase physical activity in both groups.

A cross-sectional study explores the association of physical activity with the severity of peripheral arterial disease from the Hispanic Community Health Study/Study of Latinos (HCHS/SOL).

Engaging in physical activity (PA) has been proved to reduce the risk of developing cardiovascular diseases. In patients with peripheral arterial disease (PAD), diminished PA predicts high overall mortality. However, the extent of the association of participation in PA with PAD severity is unknown. Therefore, the overarching aim of this study was to investigate the association between PAD severity, PA levels and patterns using the Hispanic Community Health Study/Study of Latinos. This was a cross-sectional cohort study that included 495 participants with PAD and a total of 12,281 participants without PAD from the Hispanic Community Health Study/Study of Latinos database. The Global Physical Activity Questionnaire was administered to assess the time spent weekly in performing moderate-to-vigorous PA (MVPA) during work, leisure time, and transportation. The ankle-brachial index (ABI) was used to measure PAD. PA status was categorized on the basis of MVPA as follows: physically active and physically inactive to insufficient. In addition, all participants were classified as follows: those with normal ABI who were physically active, those with normal ABI but who were physically inactive, those with PAD but were physically active, and those with PAD who were physically inactive. Complex sample for regression models were used to investigate the association between PA and the severity of PAD. Of the participants, 235 (47.5%) were physically inactive to insufficient, and 260 participants (52.5%) engaged in at least 150 min/wk of MVPA, which is the recommended PA level according to the guidelines of World Health Organization. Compared with who were highly active, the participants who engaged in low PA were twice as likely to have moderately severe ABI and 4 times as likely to have severe ABI, after adjustment for the covariates (age, smoking status, and body mass index). Hispanic/Latino adults with sever PAD in the US showed pattern of physical inactivity. Findings of this study highlight the association between PA and severity of PAD. These findings highlight the necessity of interventions in increasing PA in these participants. Future studies are required to identify appropriate exercise regimens or home-based programs to help patients with severe PAD meet the current PA recommendations.

Practical tips to adopt active lifestyle for university students during pandemic life: a narrative review

The Covid-19 pandemic worsened the physical inactivity pandemic and also increased sedentary behavior across the population, including university students. While physical inactivity and sedentary behavior are detrimental to health and academic performance, there is an urgent need to help university students to adopt an active lifestyle during post-pandemic life. This narrative review discussed current physical activity (PA) and sedentary behavior recommendations, practical tips for adopting an active lifestyle by applying PA doses using the frequency, intensity, time, and type (FITT) principle, and behavioral strategies to adopt and maintain an active lifestyle. Finally, several considerations related to the PA-related musculoskeletal injury and cardiovascular events risks were also discussed with examples from interventions during the pandemic in university settings.