Moderate-intensity Physical Activity Research Articles

Moderating Effect of Sex on the Relationship Between Physical Activity and Quality of Life in Coronary Heart Disease Patients in China.

The aim of this study was to investigate the moderating effect of sex on the relationship between physical activity (PA) and quality of life (QoL) in Chinese patients with coronary heart disease (CHD) not participating in cardiac rehabilitation. Chinese patients with CHD (aged 18-80 yr) were selected 12 mo after discharge from three Hebei Province tertiary hospitals. The International Physical Activity Questionnaire was used to assess PA in metabolic equivalents of energy (METs) and the Chinese Questionnaire of Quality of Life in Patients With Cardiovascular Disease was used to assess QoL. Data were analyzed using Student's t test and the χ 2 test, multivariant and hierarchical regression analysis, and simple slope analysis. Among 1162 patients with CHD studied between July 1 and November 30, 2017, female patients reported poorer QoL and lower total METs in weekly PA compared with male patients. Walking ( β= .297), moderate-intensity PA ( β= .165), and vigorous-intensity PA ( β= .076) positively predicted QoL. Hierarchical regression analysis showed that sex moderates the relationship between walking ( β= .195) and moderate-intensity PA ( β= .164) and QoL, but not between vigorous-intensity PA ( β= -.127) and QoL. Simple slope analysis revealed the standardized coefficients of walking on QoL were 0.397 (female t = 8.210) and 0.338 (male t = 10.142); the standardized coefficients of moderate-intensity PA on QoL were 0.346 (female, t =7.000) and 0.175 (male, t = 5.033). Sex moderated the relationship between PA and QoL among patients with CHD in China. There was a greater difference in QoL for female patients reporting higher time versus those with lower time for both walking and moderate-intensity PA than for male patients.

Substitutions of physical activity and sedentary behavior with negative emotions and sex difference among college students

BackgroundA growing number of studies have found that physical activity (PA) benefits mental health, and sedentary behavior (SB) increases the risk of psychological symptoms, but it remains unclear whether substituting the duration of different activities may affect the association, and whether sex difference exists among college students. MethodsA longitudinal survey was conducted in three colleges in Anhui province, China. A total of 8049 participants validly answered the questionnaire, which included demographic variables, PA, SB and negative emotions (depressive, anxiety, and stress symptoms). ResultsSubstituting 30 min per day of SB with equivalent walking was associated with lower scores of depressive symptoms. Stress symptoms were reduced when SB was substituted by moderate intensity PA (MPA) and walking. Substituting 30 min per day of MPA in place of walking and SB was associated with an amelioration of depressive and stress symptoms in females, and a reallocation of 30 min walking was associated with lower depressive and stress symptom scores when SB was replaced in males. ConclusionsReplacing SB with walking and MPA ameliorates the depressive and stress symptoms in young adults. The results suggest a reallocation of time from SB or walking to MPA in females while from SB to walking in males may markedly reduce the depressive and stress symptoms in college population.

A Systematic Review of the Characteristics and Effects of Physical Activity Interventions on Physical Activity Engagement, Long-Term and Late Effects, and Quality of Life in Adolescent and Young Adult Cancer Survivors.

Physical activity (PA) may minimize long-term and late effects experienced by cancer survivors. However, the efficacy of PA interventions in increasing PA engagement among adolescent and young adult (AYA) cancer survivors diagnosed between 15 and 39 is not well understood. This systematic review aimed to examine the effects of moderate- to high-intensity or strength training PA interventions on PA engagement in AYA cancer survivors. Secondary aims included describing intervention components unique to efficacious interventions, identifying symptom management in PA interventions, and evaluating intervention effects on quality of life (QoL), and long-term or late effects of cancer. We searched PubMed, CINAHL, PsycINFO, SportDiscus, Cochrane Library, and Scopus databases from inception to August 2022 and identified 12 articles, including 8 randomized controlled trials and 4 quasi-experimental studies. The effect of PA interventions on PA engagement was mixed, with four studies reporting increases in PA engagement ranging from 18.4 to 113.8 min/week postintervention. There was great diversity in PA intervention components. Motivational interviewing, supervised and unsupervised PA sessions together, moderate-intensity PA only, and mindful meditation were components unique to efficacious interventions. No intervention incorporated symptom management components. Studies provided some evidence of PA interventions on potential long-term effects of cancer, with positive impact on fatigue, and some evidence of improved anxiety, sleep, and QoL. Given limited research with AYA cancer survivors, additional research is needed to identify effective intervention components, integrate symptom management strategies into PA interventions, and track effects of PA interventions on late and long-term effects of cancer in this population.

Accelerometer-measured physical activity, sedentary behavior, and risk of incident pelvic organ prolapse: a prospective cohort study in the UK Biobank

BackgroundPrevious studies on physical activity (PA) and pelvic organ prolapse (POP) were largely limited to self-reported PA in athletes, soldiers, and women in postpartum. We aimed to investigate the association of accelerometer-measured PA and sedentary behavior with the risk of POP in middle-aged and elderly women.MethodsIn this prospective cohort derived from the UK Biobank, the intensity and duration of PA and sedentary behavior were measured with wrist-worn accelerometers over a 7-day period in 2013–2015 for 47,674 participants (aged 42.8–77.9 years) without pre-existing POP. Participants were followed up until the end of 2022, during which incident POP was ascertained mainly by the electronic health records. Multivariable-adjusted Cox proportional hazards models and restricted cubic splines were used to assess the associations of interest. Isotemporal substitution models were applied to test the effects of substituting a type of activity with equivalent duration of others.ResultsDuring a median follow-up of 8.0 years, 779 cases of POP were recorded. The duration of light-intensity PA (LPA) was positively whereas sedentary time was negatively associated with the risk of POP. Every additional 1 h/day of LPA elevated the risk of POP by 18% (95% confidence interval [CI], 10%–26%). In contrast, the risk decreased by 5% (95% CI, 0–8%) per 1 h/day increment in sedentary behavior. No associations were found between moderate-intensity PA (MPA) or vigorous-intensity PA (VPA) and POP, except that women who had a history of hysterectomy were more likely to develop POP when performing more VPA (53% higher risk for every additional 15 min/day). Substituting 1 h/day of LPA with equivalent sedentary time was associated with a 18% (95% CI, 11%–24%) lower risk of POP. The risk can also be reduced by 17% (95% CI, 7%–25%) through substituting 30 min/day of LPA with MPA.ConclusionsMore time spent in LPA or less sedentary time was linked to an elevated risk of POP in middle-aged and elderly women, while MPA or VPA was not. Substituting LPA with equivalent duration of sedentary behavior or MPA may lower the risk of POP.

Association between handgrip strength and physical activity: A nationwide population-based study in Korea.

This study investigated the association between handgrip strength (HGS) and physical activity (PA) at different levels in Korean adults for the purpose of providing direction for increasing HGS, which represents muscular strength, and increasing understanding of PA and HGS. This study targeted adults aged ≥30 years from the Korean National Health and Nutrition Examination Survey (2014-2019), including 31,888 participants for analysis. HGS was defined as the maximum value of the three measurements of the dominant hand. PA was defined as an activity that causes shortness of breath or a fast heartbeat. Data were weighted according to survey district and household data; p<.05 was considered statistically significant. In men, HGS in those aged 30-64 years was significantly associated with high-intensity PA and in those aged ≥65 years was associated with moderate-intensity PA. In women, HGS in those aged 30-64 years was also significantly associated with high-intensity PA, and in those aged ≥65 years, it was significantly associated with both moderate- and high-intensity PA. Moreover, compared to participants who did not participate in weight training, those who participated showed higher HGS in both sexes. This study demonstrated age- and sex-specific characteristics of the association between HGS and PA in Koreans. The findings suggest the importance of managing health by considering differences in age- and sex-related PA. In particular, this study suggests that adequate PA is necessary despite its importance of PA for elderly individuals.

Improved Physical Health in Middle-Older Aged Golf Caddies Following 24 Weeks of High-Volume Physical Activity.

The physical demands of golf caddying, including walking while carrying a golf bag, may potentially affect body composition, and markers of metabolic, cardiovascular, and musculoskeletal health. Therefore, this study examined the impact of 24 weeks of caddying on physical health in middle-older aged males. Eleven full-time experienced male caddies (age: 59 [8]y; caddying experience: 14 [12]y) were recruited from a local golf course. The following were assessed at preseason and after 24 weeks of caddying (March-September 2022): body composition, heart rate, blood pressure, blood lipids, and performance tests (static and dynamic balance, strength, and submaximal fitness). Physical activity (PA) levels were assessed at preseason and at the mid-point of the caddying season. Across the caddying season, participants completed a monthly average of 24.0 (3.8) rounds. Following the caddying season, improvements in static balance (Δ = 13.5s), dynamic balance (Δ = -1.8s), and lower back absolute strength (Δ = 112.8N), and muscle quality (Δ = 2.0N·kg-1) were observed (all P < .05). Additionally, blood lipids, including total cholesterol (Δ = -0.6mmol·L-1), high-density lipoprotein cholesterol (Δ = 0.1mmol·L-1), low-density lipoprotein cholesterol (Δ = -0.6mmol·L-1) (all P < .05), and body composition, including body mass (Δ = -2.7kg), fat mass (Δ = -1.9kg), fat percentage (Δ = -1.4%), fat-to-muscle ratio (Δ = -0.03), and body mass index (Δ = -0.9kg·m-2) (all P < .05) improved. Caddying did not offer beneficial changes to cardiovascular variables or cardiorespiratory fitness (P > .05), while coronary heart disease risk score decreased (Δ = -3.3%) (P < .05). In relation to PA, light- (Δ = 145min) and moderate-intensity (Δ = 71min) PA, moderate to vigorous PA (Δ = 73min), and total PA (Δ = 218min) between preseason and the mid-point of the caddying season increased, while sedentary time (Δ = -172min) decreased (all P < .05). Golf caddying can provide several physical health benefits such as improvements in various markers of cardiometabolic health, lower back absolute strength, and static and dynamic balance. The physical health improvements that caddying offers is likely contributed to by increased PA volume and intensity through walking on the golf course. Therefore, caddying may represent a feasible model for increasing PA volume and intensity and achieve physical health-related benefits.

The Impact of the Physical Activity Level on Sarcopenic Obesity in Community-Dwelling Older Adults

Previous studies have reported that low levels of physical activity result in sarcopenic obesity (SO). However, the effects of specific intensities of physical activity on SO and the optimal amount of physical activity for lowering the prevalence of SO have not been well studied. This study aimed to identify the effects of physical activity levels and intensity on SO and the optimal amount of physical activity related to a lower prevalence of SO. This cross-sectional study used data from the nationwide Korean Frailty and Aging Cohort Study (KFACS), which included 2071 older adults (1030 men, 1041 women). SO was defined according to the criteria of the European Society for Clinical Nutrition Metabolism (ESPEN) and the European Association for the Study of Obesity (EASO). Multivariate logistic regression analysis was performed to investigate the association between the physical activity level and SO. The high activity group had a significantly lower prevalence of SO than the non-high activity (low and moderate activity) group. On the other hand, moderate-intensity physical activity was associated with a lower prevalence of SO. A total physical activity energy expenditure of &gt; 3032 kcal/week (433 kcal/day) for men and 2730 kcal/week (390 kcal/day) for women was associated with a reduced prevalence of SO. The high physical activity and total physical energy expenditure described above may be beneficial for reducing the prevalence of SO.

A critical analysis of physical activity's promising function in the management of Type 2 Diabetes Mellitus

Physical activity (PA) has been demonstrated to have negative correlations with type 2 diabetes mellitus. Considering provided the establishment of the dose‒response interactions still additionally undiscovered. For investigating the association involving extra cases of type 2-diabetes and PA, the study utilizes model nonlinearity. Implementing together study findings from multidemographic long-term studies. A metric that exclusively considers energy employed above resting metabolic rate was used to translate PA exposures through reduced metabolic equivalent of task (MET) and the physiological equivalent of task hours per the previous week. The association involving radiation and illness was modeled utilizing restricted quadratic splices. The results point to a general nonlinear association; utilizing the rectangular spline model, we discovered a probability decrease for type 2 diabetes of twenty-six percent among people who attained eleven twenty-five MET hours per month. A risk decrease of 36% was shown when this quantity of PA was doubled, and more significant reductions were seen at higher dosages. For moderate-intensity PA the power source marginal MET week dose‒response curve's findings revealed comparable. However, the advantages of higher-intensity PA were more significant, and those of lower-intensity activity substantially decreased. Among the overall population, higher levels of has been connected to a significantly decreased risk of type 2 diabetes. The relationships between type’s two diabetics with LTPA were curved. At quantities far higher than those recommended by the health department standards, however, further benefits may be possible. The most significant insufficient quantities of exercise result in relative improvements.

Estimated Energy Expenditure in Youth While Playing Active Video Games: A Systematic Review.

Sedentary behavior and inadequate energy expenditure are serious global public health concerns among youngsters. The exponential growth in technology emerges as a valuable opportunity to foster physical activity, particularly through active video games. We performed a systematic review following the Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines in PubMed, Web of Science, Cochrane, and Scopus to provide a comprehensive view of the literature on energy expenditure levels among adolescents while playing active video games. Among the 574 manuscripts identified at the first screening stage, 23 were retained for analysis. Ten studies were characterized by longitudinal and thirteen by cross-sectional designs. The results showed that short-term active video games elicited energy expenditure values comparable to moderate-intensity physical activity (3-6 METs). However, in intervention programs (with at least six weeks) the results indicate no significant effects of active video games on youngsters' energy expenditure levels and physical activity profiles between baseline and follow-up assessments. Overall, active video games based on sports and dance were the most used, and boys tended to achieve higher energy expenditure than girls. The diversity of methods implemented limits comparing results and drawing generalized conclusions. However, considering its attractiveness to youth, active video games might emerge as a complementary tool to traditional physical activities promoted in schools and local communities. Details regarding gender differences and contradictory results of longitudinal approaches should be considered in future research based on standardized methods.

Associations of postdiagnosis changes in physical activity with all-cause mortality among patients with stage I-IIA colorectal cancer.

87 Background: Several observational studies show an association between physical activity (PA) at diagnosis and reduced risk of mortality among colorectal cancer (CRC) patients, but there has been limited research examining the potential benefit of changes in PA levels after CRC diagnosis. Here we investigate the association between change of PA and all-cause mortality in patients with stage I-IIA CRC receiving resection with curative intent. Methods: Data were used from two large Dutch CRC cohort studies (PLCRC &amp; COLON), which assessed PA at diagnosis (T0), six (T6) and twelve (T12) months after diagnosis, using the SQUASH questionnaire. A total of 2540 stage I-IIA CRC patients with repeated PA measures (i.e. a T0 and at least a T6 or T12 questionnaire) were used for this analysis. Total PA was quantified by calculating Metabolic Equivalent Task (MET) hours per week and categorized as low, moderate, and high PA, based on tertiles of an age- and sex-matched sample of the general population. PA changes were evaluated at T6 and T12 relative to T0. Being active was defined per timepoint as being in the moderate or high total PA group, or adhering to the PA guideline (minimum of 150 minutes per week of moderate-intensity PA). Cox proportional hazards models were used to study the association between PA variables and all-cause mortality, adjusted for age, sex, BMI, and tumor location (colon vs rectum). Results: Median follow-up time was 35 months (interquartile range 19 – 55) during which a total of 133 deaths occurred. Being active at both T0 and T6 compared to being inactive at these timepoints, was associated with a lower rate of all-cause mortality for both PA variables (adjusted hazard ratio (HR) 0.39 [95% confidence interval 0.24-0.63] and 0.41 [0.23-0.72] for total PA and guideline adherence, respectively). Similar results were found when comparing T12 to T0 (being active according to total PA HR 0.20 [0.09-0.42] and guideline adherence HR 0.31 [0.14-0.72]). Changing to either activity or inactivity at T6 or T12 was not significantly associated with all-cause mortality (Table). Conclusions: Maintaining a physically active lifestyle following surgery for stage I to IIA CRC is associated with longer overall survival, reinforcing the recommendations for physical activity. [Table: see text]

Dose-response association between 24-hour total movement activity and testosterone deficiency in adult males.

Previous studies on the relationship between physical activity and testosterone are limited and controversial. Hence we investigated whether high level of physical activity is associated with a low risk of testosterone deficiency (TD). This cross-sectional analysis was conducted in a representative sample of US adult males who participated in the 2011-2014 cycle of the National Health and Nutrition Examination Survey (NHANES). We used the monitor independent movement summary (MIMS) to assess activity intensity, a novel physical activity metrics developed using raw data collected by accelerometers. Multivariable regression and smooth curve fitting was used to describe the relationships between physical activity and TD, and segmented regression model were used to analyze the threshold effect between them. Sensitivity analysis was conducted using interaction and stratified analysis. A U-shaped relationship between daily MIMS units and risk of TD was observed. The optimal value of daily MIMS units for the lowest risk of TD was 14.77 (×103), the risk of TD decreased by 5% in patients per unit increase of daily MIMS units when daily MIMS units <14.77 (×103) (adjusted OR = 0.95, 95%CI: 0.91, 0.99), but increased by 12% per unit increase of daily MIMS units when daily MIMS units ≥14.77 (×103) (adjusted OR = 1.12, 95%CI: 1.01, 1.23). In sensitivity analyses, the threshold effect was also similar according to baseline characteristics (P-interaction >0.05). In a nationally representative sample of US adult males, light to moderate intensity physical activity is associated with a lower odds of TD, while high-intensity physical activity is associated with a higher risk of TD.

On-Duty Resting Heart Rate Variability at the Fire Station Is Related to Cardiorespiratory Fitness and Physical Activity Levels in Firefighters.

The aim of the study is to measure the association between the physical activity (PA) levels and cardiorespiratory fitness on the firefighters' cardiac autonomic function at rest at the fire station. Anthropometry, heart rate variability, fitness, and PA levels were assessed at the fire station in 98 career Québec male firefighters. Partial correlations, adjusted for age, waist circumference, and perceived stress revealed that heart rate and several heart rate variability indices were significantly correlated to estimated maximal oxygen consumption and to high-intensity PA but not to moderate-intensity PA. These results suggest that both cardiorespiratory fitness and high-intensity physical training are related to the cardiac autonomic function of firefighters. Therefore, fire department should promote PA programs to improve physical fitness among firefighters.

Correlation between physical activity and burnout amongst allied healthcare professionals in eThekwini, South Africa.

Allied healthcare professionals face the intricate challenge of preventing burnout, which is marked by emotional exhaustion, depersonalisation and diminished personal accomplishment. Physical activity is proposed as a mitigating strategy that promises to reduce and effectively address burnout among allied healthcare professional. The study aimed to determine the correlation between personal accomplishment and burnout among allied healthcare professionals. A quantitative, non-experimental, cross-sectional, correlational design following the TREND statement amongst 82 allied healthcare professionals was conducted using the Maslach Burnout Inventory and the Global Physical Activity Questionnaire. Burnout was assessed using its three diagnostic characteristics: emotional exhaustion, depersonalisation and personal accomplishment. Participants (45.1%) experienced a low degree of emotional exhaustion, but overall, for the entire group emotional exhaustion was moderate (M = 20.51; standard deviation = 10.5), similar to depersonalisation (M = 6.46; standard deviation ±4.90), with 46.3% of the participants experiencing a low degree of depersonalisation. In the personal accomplishment category, 22% experienced a low degree of personal accomplishment; overall, for the entire group, personal accomplishment was low (M = 33.35; standard deviation = 7.58). Most participants (65.9%) engaged in moderate-intensity physical activities. The number of days performing moderate-intensity physical activity at work significantly increases the odds of allied healthcare professional experiencing low levels of emotional exhaustion, depersonalisation and personal accomplishment by 1.92, 2.33 and 2.09, respectively (p < 0.05). Engaging in moderate-intensity physical activities increases the likelihood of allied healthcare professionals experiencing low emotional exhaustion, depersonalisation and personal accomplishment degrees. It underscores the importance of implementing physical activity programmes to improve healthcare and alleviate the effect of burnout in allied healthcare professional.

Household Food Insecurity Is Associated With Physical Activity in Youth and Young Adults With Diabetes: A Cross-Sectional Study.

Physical activity (PA) is essential for optimal diabetes management. Household food insecurity (HFI) may negatively affect diabetes management behaviors. The purpose of this study was to cross-sectionally examine the association between HFI and PA in youth and young adults (YYA) with type 1 (N = 1998) and type 2 (N = 391) diabetes from the SEARCH for Diabetes in Youth Study. HFI was measured with the US Household Food Security Survey Module. PA was measured with the International Physical Activity Questionnaire Short Form. Walking, moderate-intensity PA (excluding walking), vigorous-intensity PA, moderate- to vigorous-intensity PA, and total PA were estimated as minutes per week, while time spent sitting was assessed in minutes per day. All were modeled with median regression. Meeting PA guidelines or not was modeled using logistic regression. YYA with type 1 diabetes who experienced HFI spent more time walking than those who were food secure. YYA with type 2 diabetes who experienced HFI spent more time sitting than those who were food secure. Future research should examine walking for leisure versus other domains of walking in relation to HFI and use objective PA measures to corroborate associations between HFI and PA in YYA with diabetes.

Exploring the correlation between moderate-intensity physical activity and lifestyle habits in unmarried South Korean men

Exploring the correlation between moderate-intensity physical activity and lifestyle habits in unmarried South Korean men

Physical Activity Levels and Sedentary Behavior of People Living With Mild Cognitive Impairment: A Cross-Sectional Study Using Thigh-Worn Accelerometers.

Community-dwelling people with Mild Cognitive Impairment self-reporting not to be meeting recommended physical activity levels participated in this study to (a)determine compliance of wearing (thigh-worn) accelerometers, (b)describe physical activity levels and sedentary behavior, and (c)determine the validity of the Physical Activity Scale for the Elderly (PASE) compared with activPAL accelerometers. A total of 79 people had valid accelerometer data (median [interquartile range]: age, 71 [54-75]years). Compliance was 86.81%. Participants were sedentary for 10.6hr per day and engaged in a median of 9min per day of moderate-intensity physical activity. Fair correlations were found between the PASE and total stepping time per day (r = .35, p < .01), total number of steps per day (r = .36, p < .01), and number of steps in stepping activities completed for ≤1min (r = .42, p < .01). The PASE and Standing time (r = .04, p = .724) and PASE and Sitting time (r = .04, p = .699) had little to no relationship. The use of thigh-worn accelerometers for this population is achievable. People with Mild Cognitive Impairment have high levels of sedentary behavior and minimal engagement in moderate-intensity physical activity. The PASE has fair, positive criterion validity with activity-based outcomes measured by activPAL accelerometers but not with sedentary behavior, which is high for this population.

Perceptions and experiences of health professionals when supporting adults with stroke to engage in physical activity

Background Understanding health professional perceptions and experiences when supporting post-stroke physical activity may assist with development of strategies targeting low physical activity observed in this group. The aims of this study were to explore health professionals’ perceptions and experiences of post-stroke physical activity, the barriers they experience and potential facilitators when supporting people with stroke to be active. Methods Ten focus groups were conducted with 57 health professionals (physiotherapists, occupational therapists, nurses, exercise physiologists, psychologists and sports scientists) and allied health students. Data were analysed via inductive thematic analysis. Results Health professionals were reluctant to recommend moderate intensity physical activity. Barriers included: (1) post-stroke barriers being varied and individual; (2) resources being under pressure and (3) physical activity goals falling through the cracks. Suggested facilitators included: (1) clearly defined roles, processes and environments which encourage activity; (2) funding for more staff; (3) improving health professional skills and confidence and (4) using internal motivation and social supports after stroke. Conclusions Post-stroke physical activity is a complex goal. Varied and individual barriers require tailored solutions. Health professionals report insufficient time, resources and skills to address these individual barriers as well as limited pathways to access physical activity support. Resource-efficient interventions and care models that allow routine strategies targeting post-stroke physical activity are required.

Physical Activity and Fatigue Symptoms: Neurotypical Adults and People with Chronic Multisymptom Illnesses.

For neurotypical adults, a single bout of low-to-moderate intensity physical activity usually transiently improves feelings of energy. Similar bouts of exercise have the opposite effect of increased feelings of fatigue when performed by samples with chronic multisymptom illnesses (CMIs) such as Long-COVID, Gulf War Illness (GWI), or Myalgic Encephalomyelitis/Chronic Fatigue Syndrome (ME/CFS). The short-term adoption of regular moderate intensity physical activity (typical experiments are 1 to 6months) among neurotypical adults results in small-to-moderate improvements in self-reported feelings of fatigue, energy, and vitality. Small improvements in these feelings, or no change at all, occur for CMIs, but limited data precludes strong conclusions. The mechanisms of exercise effects on fatigue, whether acute or chronic, are poorly understood but likely involve multiple neural circuits and associated transmitters. For CMIs, the mechanisms of acute worsening of fatigue with exercise may be driven by the yet unknown pathophysiological mechanisms of the disease (perhaps involving brain, immune and autonomic system dysfunction, and their interactions). Likewise, fatigue improvements may depend on whether chronic physical activity is a disease-modifying treatment.

Perceived autonomy support from healthcare professionals and physical activity among breast cancer survivors: A propensity score analysis.

The majority of women treated for breast cancer are physically inactive although physical activity (PA) could attenuate many adverse effects of cancer and treatment. Autonomy support from healthcare professionals may improve PA initiation, adherence and maintenance. This study aimed to determine, using a causal inference approach, whether or not perceived autonomy support (PAS) from healthcare professionals is associated with light, moderate, and vigorous intensity PA among women treated for breast cancer. Data were drawn from the longitudinal study "Life After Breast Cancer: Moving On" (n = 199). PAS was measured with the Health Care Climate Questionnaire and PA was assessed using GT3X triaxial accelerometers. Associations between PAS and PA were estimated with linear regressions and adjusted estimations were obtained using propensity score-based inverse probability of treatment weights (IPTW). Results reveal no association between PAS and PA of light ([Formula: see text](95%CI) = -0.09 (-0.68, 0.49)), moderate ([Formula: see text] (95%CI) = -0.03 (-0.17, 0.11)), or vigorous ([Formula: see text](95%CI) = 0.00 (-0.03, 0.02)) intensity. Different forms of engagement and support by healthcare professionals should be explored to identify the best intervention targets to encourage women to adopt and maintain regular PA in the cancer continuum.

HIGH-INTENSITY INTERVAL TRAINING, SLEEP, AND COGNITION IN OLDER ADULTS: A SYSTEMATIC REVIEW

Abstract Sleep disturbances have been linked to cognitive and physical decline in older adults. High intensity interval training (HIIT) may resynchronize disrupted sleep-wake cycles, improve sleep quality, and potentially delay detrimental impacts of aging on cognition and physical performance. Comprehensive reviews about the impact of HIIT on cognitive and physical decline in older adults are lacking. A systematic review was conducted using the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) approach to evaluate the impact of HIIT upon sleep and cognition. PubMed, Scopus, and Web of Science were searched for articles. Six publications representing four randomized controlled trials met the inclusion criteria. Data from intervention and control groups included 158 participants, predominately female (70.4%) with median age of 69.5 years. Exercise modalities varied across studies; however, duration of 12-weeks was consistent. HIIT reduced objectively measured sleep onset latency and lowered wake after sleep onset compared to no activity and regular physical activity. However, changes in sleep quality with HIIT did not differ from those achieved with stretching exercise and moderate-intensity physical activity. In addition, only one study investigated the impact of HIIT on both sleep and cognition, indicating improvement in cognitive performance and memory but no significant changes in sleep efficiency. Despite the potential for HIIT to improve sleep outcomes, memory, and cognition, more studies are warranted, particularly those that include diverse populations and larger sample sizes, prior to forming recommendations for use in clinical settings and communities.