Vigorous Activity Levels Research Articles

The triad of physical activity: An optimal combination for cardiovascular health.

The combination of moderate to vigorous physical activity with muscle-strengthening physical activity is increasingly recognized for its significant impact on cardiovascular health. This narrative review synthesizes current evidence to compare the cardiovascular benefits of combined physical activity versus singular forms, especially in primary prevention. The main focus is on hormonal, nervous, genetic, and molecular adaptations, critical mechanisms underlying the body's response to physical activity. Our findings endorse superior benefits for combined moderate to vigorous and muscle-strengthening physical activity for preventing cardiovascular disease (CVD). This combined approach synergistically enhances cardiovascular function and more effectively reduces risk factors than either activity alone. While more research is needed to distinguish between moderate and vigorous activity levels in combination with muscle-strengthening physical activity, current evidence supports comprehensive physical activity guidelines that maximize cardiovascular health. These findings highlight the importance of integrated physical activity regimens in public health strategies and clinical practice to mitigate the global CVD burden.

Modified Gift Box Repair Technique in Achilles Tendon Rupture: A 5-Year Follow-Up

Category: Sports; Trauma Introduction/Purpose: Achilles Tendon (AT) rupture is one of the most prevalent adult tendon injuries, with the incidence rate estimated to range between 7 to 40 in 100,000 person-years. This study aimed to assess the clinical and functional outcomes of a modified “Gift box” open technique for AT rupture repair. Methods: After receiving IRB approval, in a single center study in Tehran, Iran, we conducted a consecutive case-series study including 36 patients with acute AT rupture who underwent modified gift box AT repair using two mini-incisions and gift box sutures by expert surgeons affiliated with the local hospitals (Figure 1). The postoperative protocol involved all patients discontinuing the use of crutches after 4 weeks and removing their boot after 8 weeks. The AT rupture score (ATRS) and the American Orthopedic Foot and Ankle Society (AOFAS) measure scores were obtained from all patients at 6, 9, 18, and 36 months postoperatively with a complementary follow-up in an average of 24 months (range of 18 to 48 months) after the last follow-up. The study also included other variables such as visual analog scale (VAS) for pain, calf atrophy, and the range of sagittal ankle motion, wound complications, sural nerve injury, and re-rupture rate. Results: The patients treated with modified gift box technique yielded AOFAS scores of 85±3 and ATRS of 84.7±5.4 at 36 months postoperatively, further improving to 86±7 and 85.2±5.1 respectively during extended follow-up (up to 2 years). Approximately 82% of patients regained normal activities of daily living within 4 months, while 91.5% recovered preinjury vigorous activity levels by 6 months postoperatively. Mean VAS pain scores decreased from 7.9±0.9 at 2 months to < 4 after 3 months. Isokinetic testing demonstrated plantar flexion and dorsiflexion strength deficits of 84.9±5.3% and 89.8±4.7% respectively compared to the contralateral uninjured side at 3 months, resolving to equivalent strength by 42 months. Dorsiflexion range of motion reached 94% of normal at 5 years follow-up, though calf circumference remained < 95% of normal size. Conclusion: The modified gift box technique for AT rupture repair using two mini-incisions and gift box sutures, which we assume to be less invasive compared to the previously reported method, demonstrated favorable clinical outcomes with high patient satisfaction levels. Patients experienced significant improvements in functional scores, pain levels, strength, and range of motion over time, with most regaining their ability to perform activities of daily living and returning to preinjury levels of physical activity. While some residual deficits were observed, the procedure was well-tolerated with no significant complications, suggesting it is a safe and effective treatment option.

Relationship between quantitative physical activity and deterioration of locomotive function: a cross-sectional study using baseline data from a cohort

BackgroundIn aged society, health policies aimed at extending healthy life expectancy are critical. Maintaining physical activity is essential to prevent the deterioration of body functions. Therefore, it is important to understand the physical activity levels of the target age group and to know the content and intensity of the required physical activity quantitatively. Especially we focused the role of non-exercise activity thermogenesis and sedentary time, which are emphasized more than the introduction of exercise in cases of obesity or diabetes.MethodsA total of 193 patients from 25 institutions were included. Participants underwent a locomotive syndrome risk test (stand-up test, 2-step test, and Geriatric Locomotive Function Scale-25 questionnaire) and were classified into three stages. Physical activity was quantitatively monitored for one week with 3-axial accelerometer. Physical activity was classified into three categories; (1) Sedentary behavior (0 ∼ ≤ 1.5 metabolic equivalents (METs)), (2) Light physical activity (LPA:1.6 ∼ 2.9 METs), and (3) Moderate to vigorous physical activity (MVPA: ≥3 METs). We investigated the relationship between physical activity, including the number of steps, and the stages after gender- and age- adjustment. We also investigated the relationship between social isolation using Lubben’s Social Network Scale (LSNS), as social isolation would lead to fewer opportunities to go out and less outdoor walking.ResultsComparison among the three stages showed significant difference for age (p = 0.007) and Body Mass Index (p < 0.001). After gender-and age-adjustment, there was a significant relation with a decrease in the number of steps (p = 0.002) and with MVPA. However, no relation was observed in sedentary time and LPA. LSNS did not show any statistically significant difference. Moderate to high-intensity physical activity and the number of steps is required for musculoskeletal disorders. The walking, not sedentary time, was associated to the locomotive stages, and this finding indicated the importance of lower extremity exercise.ConclusionsAdjusting for age and gender, the number of steps and moderate to vigorous activity levels were necessary to prevent worsening, and there was no effect of sedentary behavior. Merely reducing sedentary time may be inadequate for locomotive disorders. It is necessary to engage in work or exercise that moves lower extremities more actively.

Measuring Upper Extremity Activity of Children With Unilateral Cerebral Palsy Using Wrist-Worn Accelerometers: A Pilot Study.

Children with unilateral cerebral palsy (UCP) have poor strength and movement control on one side of their body, leading to impaired bimanual coordination skills. To compare duration and intensity of all-day habitual movement of the dominant and nondominant upper extremities (UEs) in typically developing (TD) children and children with UCP. Two-group observational study. Children's naturalistic settings. Convenience sample of 9 TD children and 9 children with UCP. Children wore accelerometers on both wrists all day and night for 1 wk. We compared the extent of asymmetry in bilateral arm use (intensity and duration) between the 2 groups. Compared with TD children who use both UEs equally, children with UCP were more likely to use their dominant or unaffected UE than their nondominant or affected UE during daily activities. There were no differences between groups in dominant UE activity. However, children with UCP engaged in lower levels of moderate to vigorous activity and greater levels of light activity with their nondominant or affected UE than their TD peers. Wrist-worn accelerometry can provide objective information on real-world habitual activity with both arms in children. Accelerometers are nonintrusive, easy to use, and well tolerated by children, and they allow prolonged monitoring of UE activity outside therapeutic contexts. Occupational therapists can use wrist-worn accelerometers as sensitive tools to assess asymmetries in UE use at baseline and as an outcome measure to assess the efficacy of behavioral interventions and carryover into real-world settings among children with UCP. Plain-Language Summary: This pilot study provides promising evidence that supports the use of wrist-worn accelerometry as an accurate, easy-to-use, and objective assessment tool for children with unilateral cerebral palsy (UCP) to detect asymmetries in bilateral real-world arm activity at baseline and after intensive occupational therapy interventions to improve arm function. The authors used wrist-worn accelerometry for one week with 9 typically developing (TD) children and 9 children with UCP to compare dominant or unaffected versus nondominant or affected upper extremity (UE) use for intensity and duration of activity. Compared with TD children, children with UCP had lower relative intensity of activity in the nondominant UE than the dominant UE. Wrist-worn accelerometers seem to be a sensitive measure to detect asymmetries in bilateral all-day UE use in children with UCP. The findings have implications for the use of wrist-worn accelerometers as an outcome measure to assess the efficacy of intensive therapies to improve real-world affected UE activity and bimanual function among children with UCP.

Frequency of Physical Activity in Acute or Chronic Smoker among General Population of Karachi - A Cross-Sectional Study

Background: This research aims to evaluate the frequency of physical activity among acute or chronic smokers in Karachi's general population, recognizing the reciprocal influence between smoking and physical activity on overall health. Assessing exercise frequency among smokers is crucial, considering the commonly observed association between smoking and declining bodily functions, making it pivotal for comprehensive health assessment. Methods: In this study, a cross-sectional survey involved 316 healthy adults aged 15-69 years, utilizing convenience sampling is used for diverse demographic representation. Data on demographic details, smoking status, and physical activity levels were collected through the International Physical Activity Questionnaire (IPAQ). The subsequent analysis, conducted using SPSS version 0.22, aimed to scrutinize the impact of smoking on participants' physical activity. Results: Among the participants, a majority (76.9%) held jobs with varying physical activity levels. For transportation, nearly all employed modes showed varying physical activity intensities, with 59.8% reporting low, 25.3% moderate, and 14.9% vigorous activity levels. Engagement in household chores and family care displayed diverse physical activity levels: 66.5% reported low, 24.1% moderate, and 9.1% vigorous activities. Similar trends were observed for house maintenance and family care, with 69.0% reporting low, 14.6% moderate, and 16.5% vigorous activities. Conclusion: The study indicates that smokers participate in physical activity less frequently, underscoring the need for heightened attention to their exercise habits. These findings underscore the importance of tailoring health strategies for smokers and examining lifestyle factors influencing their physical well-being. Keywords: Physical Activity, METs, Smoking, Well-being.

Association between fitness tracker use, physical activity, and general health of adolescents in Eastern Province of Saudi Arabia.

Physical inactivity is a major problem of adolescents worldwide. Fitness trackers are widely used technologies that assess physical activity and allow self-monitoring of daily activities. Thirty-five percent of the Saudi population is made up of adolescents, which makes them an important target population. Few studies have evaluated the association of fitness trackers with physical activity levels of adolescents. This study aimed to evaluate physical activity among adolescents and its relationship to their use of fitness trackers and overall health. A cross-sectional study was carried out among adolescents in middle and high schools in the Eastern Province. Data was collected using a structured questionnaire and physical activity was assessed using International Physical Activity Questionnaire for Adolescents. Chi-square test and ANOVA were performed to test for statistical significance. Unadjusted and adjusted odds ratios (ORs) were obtained through ordered logistic regression models. Model diagnostics were run as post hoc analyses. Majority of participants (82.6%) had low physical activity levels, 12.2% had moderate and 5.2% had vigorous activity level. The model revealed that as participants' ages increased, the odds of having higher levels of physical activity decreased (OR = 0.92; 95% confidence interval [CI]: 0.85-0.99). Moreover, participants who did not go to a gym regularly or own a fitness tracker were less likely to have higher physical activity levels (OR = 0.43; 95% CI:0.30-0.61, and OR = 0.44; 95% CI: 0.33-0.59, respectively). Motivation for using fitness trackers was mostly "no specific reason" for females. However, "luxury and esthetics" were mostly reported by males. Physical activity tends to be higher in younger adolescents who use fitness trackers, or go to the gym regularly, with no significant difference between males and females. However, the motivation behind adolescents' use of fitness trackers varied by gender.

Sleep characteristics and pain in middle-aged and older adults: Sex-specific impact of physical and sitting activity

ObjectivesThe relationship between poor sleep health and worse pain is established. Physical activity has been successful in reducing chronic pain and improving sleep in aging adults. Despite known sex differences (more women than men experiencing chronic pain and insomnia), sex-specific patterns of interactive associations between physical activity, sleep, and pain remain unexplored. This study tested whether physical and sitting activity moderated associations between sleep characteristics and pain intensity, and whether sex further moderated these relationships. MethodsParticipants aged 50+ (N = 170, Mage = 64.34, 72 women) completed an online survey measuring pre-sleep arousal (Pre-sleep Arousal Scale), sleep (Pittsburgh Sleep Quality Index), past month average pain intensity, and physical activity (International Physical Activity Questionnaire). Multiple regressions evaluated whether minutes of physical activity (total, vigorous, moderate, walking) or sitting activity, pre-sleep arousal, sleep, sex, or their interaction was associated with pain. Analyses controlled for education, difficulty walking, body mass index, total medical conditions, pain medication, and depressive/anxiety symptoms. ResultsIn women, vigorous activity interacted with total pre-sleep arousal and somatic pre-sleep arousal in its association with pain. Higher total arousal and somatic arousal were associated with worse pain intensity only for women who reported highest levels of vigorous activity. No such associations were observed for men or for other physical or sitting activity levels. ConclusionsVigorous physical activity may exacerbate the association between more pre-sleep arousal and worse pain in middle-aged and older women. Research should explore potential sex-specific mechanisms (e.g., inflammatory cytokines, arousal neural networks) underlying these results.

Tracking changes in physical activity during inpatient treatment in a psychiatric clinic in Germany by asking two simple questions

Increasing physical activity is essential to improve psychiatric patients’ physical and mental health. This study aimed to characterise the physical activity levels of inpatients in a general psychiatric clinic and to determine the feasibility of using a simple tool in everyday practice to assess physical activity levels in standard patient documentation. We assessed the level of physical activity undertaken by patients treated on an inpatient basis in a psychiatric hospital over 20 months. A total of 328 patients were included in the analysis. Physical activity was measured using a slightly altered version of the Exercise as a vital sign (EVS) questionnaire. All information was extracted from letters of discharge. During inpatient treatment, moderate to vigorous activity levels increased, and more patients engaged in physical activity. Patients with mood or anxiety disorders displayed the most considerable increase in physical activity. Patients with other diagnoses, such as schizophrenia, benefitted less or not at all. Factors associated with physical activity included—among others—history of substance use, education and month of admission. Investigating the feasibility of standardised documentation of physical activity showed fluctuation in documentation rates throughout the study. The level of physical activity performed by psychiatric patients can be increased during inpatient treatment. Implementing physical activity level as part of standard patient documentation is a first step in gathering data to assess the need for interventions to achieve an optimal physical activity in psychiatric patients throughout inpatient treatment.

A theory-based model of cumulative activity

Energy expenditure can be used to examine the health of individuals and the impact of environmental factors on physical activity. One of the more common ways to quantify energy expenditure is to process accelerometer data into some unit of measurement for this expenditure, such as Actigraph activity counts, and bin those measures into physical activity levels. However, accepted thresholds can vary between demographics, and some units of energy measurements do not currently have agreed upon thresholds. We present an approach which computes unique thresholds for each individual, using piecewise exponential functions to model the characteristics of their overall physical activity patterns corresponding to well established sedentary, light, moderate and vigorous activity levels from the literature. Models are fit using existing piecewise fitting techniques and software. Most participants’ activity intensity profile is exceptionally well modeled as piecewise exponential decay. Using this model, we find emergent groupings of participant behavior and categorize individuals into non-vigorous, consistent, moderately active, or extremely active activity intensity profiles. In the supplemental materials, we demonstrate that the parameters of the model correlate with demographics of age, household size, and level of education, inform behavior change under COVID lockdown, and are reasonably robust to signal frequency.

Accelerometer-Measured, Habitual Physical Activity and Circulating Brain-Derived Neurotrophic Factor: A Cross-Sectional Study.

One of the mechanisms suggested to link physical activity (PA) to favorable brain health is through stimulation of neural growth factors such as brain-derived neurotrophic factor (BDNF). Acute bouts of PA stimulate circulating BDNF levels. In this investigation, we assessed whether habitual, accelerometer-measured PA levels were related to circulating BDNF levels in a middle-aged cohort. In the Framingham Heart Study Third Generation cohort, 1,769 participants provided reliable accelerometry data and were not missing BDNF measurement or platelet counts. In a cross-sectional analysis, using multivariable regression, we related PA measures to serum BDNF levels, adjusting for age, sex, smoking status, platelet count, depression status, and accelerometer wear time. Our study participants (mean age 47±9 years, 50.8% women) spent an average of 22.3 mins/day in moderate-to-vigorous (MV)PA. Most PA variables (steps, MVPA, light activity, and sedentary time) were not related to BDNF levels (p > 0.05). We observed a non-linear trend, where 15-50 mins/week vigorous activity was associated with lower BDNF compared to those with 0 min vigorous activity (β= -0.049±0.024, p = 0.05), but with no significant associations at lower or higher vigorous activity levels. In smokers, MVPA was also associated with lower BDNF levels (β= -0.216±0.079, p = 0.01). Our study reveals that circulating BDNF is not chronically elevated in individuals with higher levels of habitual PA in middle-aged adults from the community and may even be chronically suppressed with higher PA in subgroups, including current smokers. These results do not contradict previous studies demonstrating that circulating BDNF rises acutely after PA.

Health measures of Eeyouch (Cree) who are eligible to participate in the on-the-land Income Security Program in Eeyou Istchee (northern Quebec, Canada)

BackgroundParticipation in on-the-land programs that encourage traditional cultural activities may improve health and well-being. The Income Security Program (ISP) − a financial incentive-based on-the-land program − for Eeyouch (Cree) hunters and trappers in Eeyou Istchee was created as a result of the 1975 James Bay and Northern Quebec Agreement to help mitigate the effects of hydroelectric development on the Cree people of northern Quebec, Canada. Beyond the ISP’s financial incentives, little is known about the health measures of those who are eligible to participate in the ISP (i.e. spent ≥120 days on-the-land during the previous year). Therefore, this paper’s objective was to assess the health measures of northern Quebec Cree, who were eligible for participation in the ISP.MethodsUsing participant data (n = 545) compiled from the Nituuchischaayihtitaau Aschii Multi-Community Environment-and-Health Study, we assessed 13 different health measures in generalized linear models with the independent variable being the eligibility to participate in the ISP.ResultsParticipants in the present study who were eligible for the ISP had significantly higher levels of vigorous and moderate activity per week, and higher concentrations of omega-3 polyunsaturated fatty acids in the blood compared to those ineligible for the ISP (i.e. spent ≤119 days on-the-land during the previous year). Encouragingly, following model adjustment for age and sex, participants eligible for the ISP did not have higher blood concentrations of mercury than those who were not eligible for the ISP.ConclusionsOur results suggest that the participants eligible for participation in the ISP are likely to be healthier than those who are ineligible to participate − and are promising for on-the-land programs for Indigenous peoples beyond a financial incentive − with no apparent higher risk of increasing contaminant body burden through traditional on-the-land-activities (e.g. fish consumption).

Impact of physical activity on redox status and nitric oxide bioavailability in nonoverweight and overweight/obese prepubertal children

Nutritional status might contribute to variations induced by physical activity (PA) in redox status biomarkers. We investigated the influence of PA on redox status and nitric oxide (NO) production/metabolism biomarkers in nonoverweight and overweight/obese prepubertal children. We performed a cross-sectional evaluation of 313 children aged 8–9 years (163 nonoverweight, 150 overweight/obese) followed since birth in a cohort study (Generation XXI, Porto, Portugal). Plasma total antioxidant status (P-TAS), plasma and urinary isoprostanes (P-Isop, U-Isop), urinary hydrogen peroxide (U–H2O2), myeloperoxidase (MPO) and plasma and urinary nitrates and nitrites (P-NOx, U-NOx) were assessed, as well as their association with variables of reported PA quantification (categories of PA frequency (>1x/week and ≤1x/week)and continuous PA index (obtained by the sum of points)) in a questionnaire with increasing ranks from sedentary to vigorous activity levels. U-NOx was significantly higher in children who presented higher PA index scores and higher PA frequency. Separately by BMI classes, U-NOx was significantly higher only in nonoverweight children who practiced PA more frequently (p = 0.037). In overweight/obese children, but not in nonoverweight, P-TAS was higher among children with higher PA frequency (p = 0.007). Homeostasis model assessment index (HOMA-IR) was significantly lower in more active overweight/obese children, but no differences were observed in nonoverweight children. In the fully adjusted multivariate linear regression models for P-TAS, in the overweight/obese group, children with higher PA frequency presented higher P-TAS. In the U-NOx models, U-NOx significantly increased with PA index, only in nonoverweight children. Our results provide additional evidence in support of a protective effect of physical activity, in nonoverweight by increasing NO bioavailability and in overweight/obese children by enhancing systemic antioxidant capacity and insulin sensitivity. These results highlight the importance of engaging in regular physical exercise, particularly among overweight/obese children, in which a positive association between oxidant status and cardiometabolic risk markers has been described.

Program Evaluation of Environmental and Policy Approaches to Physical Activity Promotion in a Lower Income Latinx School District in Southeast Los Angeles.

There is alarming population wide prevalence of low adolescent physical activity as this represents a risk factor for later chronic disease development. There is evidence to suggest that schools with strong wellness policies have students that are more frequently active. We designed an intervention to enhance students’ physical activity levels in five majority Latinx, underserved school districts. Evaluation consisted of assessment of written quality of school-district wellness policies; observation of student’s physical activity during leisure times; and after-school program practices and policies. We examined one of these district’s results more closely, the only participating district with a community coalition, and extracted lessons learned. On the physical activity section of the wellness policy, this district covered a moderate extent of recommended content areas using weak language. Compared to previous reports, we identified low vigorous activity levels for girls and boys at baseline (respectively, 12% and 18%). Finally, we identified that of four after school program sites assessed at baseline, no program reported the recommended 50% or more of program time dedicated to physical activity. Based on these evaluation findings, additional strategies are urgently needed to encourage all students and particularly more girls to be physically active throughout the school day.

Physical Fitness and Activity Levels among Chinese People with Schizophrenia: A Cross-Sectional Study with Matched Case-Control Comparison.

People with schizophrenia have an increased risk of developing cardiometabolic diseases and a reduced life expectancy. Studies conducted mainly in Western settings report low amounts of activity and poor levels of fitness in this population. This study aims to compare physical fitness and activity levels between people with schizophrenia/healthy matched controls and investigate potential associations between these variables. A cross-sectional study was conducted with 57 community-dwelling people with schizophrenia and 57 age-, gender- and body mass index (BMI)-matched controls. Participants completed the international physical activity questionnaire and the Young Men’s Christian Association (YMCA) fitness assessment protocol with accompanying cardiovascular/lung function tests. Cardiorespiratory fitness was significantly better in healthy matched controls than individuals with schizophrenia in all areas (all p < 0.05, d = 0.38 to 1.06). Performance in best trunk flexion, half sit-ups and one-minute pulse recovery following the three-min step test were significantly worse in the schizophrenia group (all p < 0001, d = 0.76 to 1.04). Higher levels of weekly moderate activity (t = −2.66, p = 0.009) and total weekly activity levels (t = −2.013, p = 0.047) were reported by the healthy controls. Levels of vigorous activity were significantly correlated with some areas of lung functioning in the schizophrenia group (all p < 0.05). The findings show that Chinese people with schizophrenia have significantly poorer fitness than matched healthy controls, demonstrating the need to provide timely effective exercise-based interventions as a matter of routine to attenuate the risk of developing chronic physical illnesses.

Physical activity intensity, self-regulation, and school readiness indicators in young children

ABSTRACT This study examined whether associations exist between PA intensity, self-regulation, and indicators of school readiness, a proxy for academic achievement, in young children. Thirty young children completed assessments of physical activity, school readiness indicators, and self-regulation. Physical activity intensity was classified as light, moderate or vigorous. School readiness indicators were assessed using expressive and receptive subtests. There were no associations between light and moderate physical activity, school readiness indicators, and self-regulation. Additionally, there was no association between vigorous activity and the receptive subtest of the school readiness indicators. Correlations were significant between vigorous activity, self-regulation, and expressive subtest. School indicator expressive scores and self-regulation were significantly predicted by the level of vigorous activity. Results suggest the existence of an intensity threshold influencing the PA, self-regulation, and school readiness association.

Physical Activity and Sedentary Behavior among US Hispanic/Latino Youth: The SOL Youth Study.

Physical activity and sedentary behavior among diverse Hispanic/Latino youth in the United States is not well documented. The aim of this study was to describe physical activity and sedentary behavior among a representative sample of Hispanic/Latino youth from four US communities using accelerometry and self-reported measures. From 2012 to 2014, 1466 Hispanic/Latino youth ages 8 to 16 yr, children of participants in the Hispanic Community Health Study/Study of Latinos, enrolled in the SOL youth. Physical activity and sedentary behavior were assessed by interview. After this, youth wore an Actical accelerometer for 1 wk. All statistical analyses accounted for the complex survey design and used sampling weights. The accelerometer wear time adjusted mean minutes per day was: 604.6, sedentary; 178.9, light; 25.4, moderate; and 10.2, vigorous. Generally, higher levels of moderate and vigorous activity occurred among males, Mexican backgrounds, and youth age 8 to 10 yr compared with older age groups. Higher levels of sedentary behavior occurred among youth age 15 to 16 yr compared with younger age groups. The most common activities (reported, ≥1 per month) were of lower intensity, including listening to music (91.9%), homework (87.0%), riding in car/bus (84.3%), and hanging out with friends (83.4%). Common active pursuits included travel by walking (74.6%), physical education class (71.7%), running (71.4%), and recess (71.3%). Time, intensity, and type of physical activity and sedentary behavior varied among Hispanic/Latino youth. These findings can inform efforts to increase physical activity and reduce sedentary behavior among US Hispanic/Latino youth.

Physical activity is associated with changes in knee cartilage microstructure

The purpose of this study was to determine if there is an association between objectively measured physical activity and longitudinal changes in knee cartilage microstructure. We used accelerometry and T2-weighted magnetic resonance imaging (MRI) data from the Osteoarthritis Initiative, restricting the analysis to men aged 45-60 years, with a body mass index (BMI) of 25-27kg/m2 and no radiographic evidence of knee osteoarthritis. After computing 4-year changes in mean T2 relaxation time for six femoral cartilage regions and mean daily times spent in the sedentary, light, moderate, and vigorous activity ranges, we performed canonical correlation analysis (CCA) to find a linear combination of times spent in different activity intensity ranges (Activity Index) that was maximally correlated with a linear combination of regional changes in cartilage microstructure (Cartilage Microstructure Index). We used leave-one-out pre-validation to test the robustness of the model on new data. Nineteen subjects satisfied the inclusion criteria. CCA identified an Activity Index and a Cartilage Microstructure Index that were significantly correlated (r=.82, P<.0001 on test data). Higher levels of sedentary time and vigorous activity were associated with greater medial-lateral differences in longitudinal T2 changes, whereas light activity was associated with smaller differences. Physical activity is better associated with an index that contrasts microstructural changes in different cartilage regions than it is with univariate or cumulative changes, likely because this index separates the effect of activity, which is greater in the medial loadbearing region, from that of patient-specific natural aging.

Evaluation of the Coping Through Football Project: Physical Activity and Psychosocial Outcomes

Background: Football is increasingly used as an adjunct intervention for people with mental problems, intended to improve their mental, physical and social health. Objective: The aim of this study is to evaluate psychosocial outcomes and physical activity in participants of “Coping Through Football” (CTF), a London-based football intervention for people who receive secondary mental health care. Methods: In a one group pre-post study design, participants completed self-report measures on physical activity and mental well-being at baseline (i.e. when joining the intervention), and at 6 months and 12 months thereafter. Perceived quality of life was measured using the WHOQOL-BREF which assess domains such as physical health, psychological well-being, social relationships and environment. The Rosenberg Self-esteem scale was used to measure self-esteem in the participants. Self-reported physical activity (vigorous activity, moderate activity, walking and sitting) was assessed using the short form of the International Physical Activity questionnaire (IPAQ). Results: For the 6 months follow up, data was available for 72 participants; at 12 month follow up data was available for 32 participants. Levels of vigorous activity doubled between baseline (102.98 min/week) and the short term follow up (196.85 min/week) as well as between baseline (117.26 min/week) and the one year follow up (248.23 min/week). For moderate activity, we find similar results with an improvement from 78.13 min/week at baseline to 149 min/week at the short term follow up and an increase from 87.74 min/week at baseline to 209.61 min/week. Increases on psychosocial measures were more modest, reaching significance at only the 6 month time point. There were no statistically significant changes with regard to the time spent sitting or walking at either the 6 or the 12 month follow up. Conclusion: While the impact on psychosocial measures was only moderate, the increase in physical activity in participants encourages the use of adjunct football interventions for people with mental health problems as a means to increase physical activity levels.

Social cognitive theory correlates of moderate-intensity exercise among adults with type 2 diabetes

The purpose of this study was to identify social cognitive theory (SCT) correlates of moderate- to vigorous-intensity exercise (MVPA) among adults with type 2 diabetes. Adults with type 2 diabetes (N = 181) participated in the study. Participants were recruited through ResearchMatch.org to complete an online survey. The survey used previously validated instruments to measure dimensions of self-efficacy, self-regulation, social support, outcome expectations, the physical environment, and minutes of MVPA per week. Spearman Rank Correlations were used to determine the relationship between SCT variables and MVPA. Classification and Regression Analysis using a decision tree model was used to determine the amount of variance in MVPA explained by SCT variables. Due to low levels of vigorous activity, only moderate-intensity exercise (MIE) was analyzed. SCT variables explained 42.4% of the variance in MIE. Self-monitoring, social support from family, social support from friends, and self-evaluative outcome expectations all contributed to the variability in MIE. Other contributing variables included self-reward, task self-efficacy, social outcome expectations, overcoming barriers, and self-efficacy for making time for exercise. SCT is a useful theory for identifying correlates of MIE among adults with type 2 diabetes. The SCT correlates can be used to refine diabetes education programs to target the adoption and maintenance of regular exercise.

High Levels of Physical Inactivity Amongst Dental Professionals: A Questionnaire Based Cross Sectional Study

A Dentist plays an important role in providing health education (General and Oral) to the community. Questions arise regarding their own health, which in turn affects their patients' counselling for leading a healthy and a physically active life. To measure and compare the amount of physical activity present amongst dental professionals with the general population of Greater Noida. The International Physical Activity Questionnaire (IPAQ) was used to measure physical activity and statistical significance was calculated using SPSS version 21.0. Statistical significance was kept as p <.05. Compared to the general population, Dentists were more obese and reported increased levels of low physical activity. Dentists had an increased and significant transportation and leisure time activity (p= .03 and .01) whereas, the general population had a higher level of vigorous activity(p = <.01). The MET hour/week for dentists and general population was 33.72 and 36.24 respectively, which was quite low as compared to European population. The results indicate that dentists report a lower level of physical activity as compared to the general population of Greater Noida. However, on a global scale, the physical inactiveness of dentists and general population alike could pose a serious health hazard and if kept unchecked, shall increase the global burden of chronic disease.