Health Benefits Of Physical Activity Research Articles

The Health-Oriented Transportation Model: Estimating the health benefits of active transportation

IntroductionOverdependence on gasoline-powered personal automobiles in industrialized urban settings has resulted in transportation behaviour that is detrimental to public health. Risk not only stems from an increase in air pollution, but also, and more significantly for wealthy nations, from a reduction in physical activity. Tools and models that demonstrate the magnitude of the health benefits of physical activity are needed to inform policies addressing the epidemic of physical inactivity and to help promote environmentally sustainable cities. MethodsThe Health-Oriented Transportation (HOT) model is a transparent and easily accessible tool that allows users to assess the current and potential health benefits of active transportation (walking or cycling) using data from a one-day travel survey. As a case-study, we apply the HOT model to the population of London, England, using the London Travel Demand Survey. ResultsWe estimate that in the 2016 adult population of London, 1,618 and 2,720 deaths were averted in the inner and outer boroughs, respectively, due to transportation-related physical activity; an additional 364 and 946 deaths are potentially averted if the proportion of the adult population that walked or cycled at least weekly from 80% and 73% to 100% in the inner and outer boroughs, respectively. A 50% increase in walking/cycling mode share among active travellers would result in a 2.5% reduction in premature deaths in the adult population of London. ConclusionsEstimating the potentially large health benefits arising from active transportation in an urban setting can provide key public health information for urban planners and local officials, informing investments in infrastructure and critical public health programs.

Postprandial Metabolism and Physical Activity in Asians: A Narrative Review.

The widespread benefits of physical activity in enhancing health and lowering the risk of non-communicable chronic diseases are well established across populations globally. Nevertheless, the prevalence of several lifestyle-related chronic diseases, including cardiovascular disease, varies markedly across countries and ethnicities. Direct ethnic comparative studies on the health benefits of physical activity are sparse and evidence-based physical activity guidelines are not ethnicity-specific. Indeed, physical activity guidelines in some Asian countries were developed primarily based on data from Western populations even though the magnitude of potential benefit may not be the same among different ethnic groups. Unfavorable diurnal perturbations in postprandial triglycerides and glucose are risk factors for cardiovascular disease. This narrative review summarizes differences in these risk factors primarily between individuals of Asian and white European descent but also within different Asian groups. Moreover, the variable effects of physical activity on mitigating risk factors among these ethnic groups are highlighted along with the underlying metabolic and hormonal factors that potentially account for these differences. Future ethnic comparative studies should include investigations in understudied ethnic groups, such as those of East Asian origin, given that the effectiveness of physical activity for ameliorating cardiovascular disease varies even among Asian groups.

Moderate-Vigorous Physical Activity and Clinical Outcomes in Adults with Nondialysis Chronic Kidney Disease.

The health benefits of physical activity (PA) are well known. However, the association between an adequate amount of moderate–vigorous PA (MVPA) and clinical outcomes has limited evidence in chronic kidney disease (CKD). We assessed PA using a self-administered questionnaire. The amount of MVPA was categorized into four groups: none, low, moderate, and high (0, <7.5, 7.5–14.9, and 15.0–29.9 metabolic equivalent-hours/week, respectively). We analyzed the association between the amount of MVPA and clinical outcomes. Among a total of 1909 adults with CKD, adults with MVPA showed various beneficial outcomes compared to those with no MVPA in a Kaplan–Meier curve followed over a median of 5.9 years. In multivariable-adjusted Cox proportional hazard models, a low and a moderate amount of MVPA was associated with a lower risk of all-cause death. A moderate amount of MVPA was associated with a lower risk of cardiovascular events. A high amount of MVPA was associated with a lower risk of end-stage kidney disease in ESKD in 1324 adults with eGFR <60 mL/min/1.73 m2. Age and sex modified the relationships between MVPA and clinical outcomes. MVPA is associated with various beneficial outcomes across the amount of MVPA. PA plans should be tailored for individual adults with CKD.

Barriers to being physically active: An exploratory study among medical students

: The health benefits of physical activity are well established. In India, it is estimated that overall, 392 million individuals are physically inactive. This is a staggering figure and implies a huge population, which is at risk for developing diabetes and other non-communicable diseases. Identification of barriers for physical activity among youngsters would help in development of plans for boosting physical activity among young population. The present study is an attempt to explore various barriers for being active among medical undergraduates. : The study was conducted at a medical college in Uttar Pradesh. Sample was drawn using convenience sampling. The data collection was done based on “CDC questionnaire on barriers to being active” using self-administered questionnaire. All the participants fulfilling inclusion criteria were asked to fill the forms honestly by choosing the best option describing their barrier for physical activity against each question in the proforma. A total of 203 MBBS students participated in the study, comprising of 108 males 95 females. The mean age of the participants was 22.02 years (Range 18 years-26 years). The factor which was perceived as the most significant determinant for physical inactivity was “lack of willpower”. Other significant contributors were “lack of resources”, “lack of energy”, “social influence”, “lack of skills” and “fear of injury” in decreasing order of importance. The sum scores of seven barriers studied were significantly correlated (p&amp;#60;0.01) to each other with strong correlations. The highest correlations were noted between “Lack of will power and Social Influence” (0.682) and “Lack of skills and Social influence” (0.630) and weakest correlation was noted between “Fear of Injury” and Lack of will power” (0.218).

Factors Associated with Physical Activity among People with Hypertension in a Rural Area in Bangladesh: Baseline Data from a Cluster Randomized Control Trial.

The health benefits of physical activity (PA) are well recognized, and PA levels vary in different populations. The study aimed to investigate PA levels and associated sociodemographic factors among people with hypertension in a rural area in Bangladesh. Baseline data were part of a cluster randomized controlled trial of 307 adults aged 30–75 years to study the effectiveness of PA and lifestyle changes in lowering blood pressure. The outcome variables were PA at work, commuter, recreation, metabolic equivalent task (MET)-minute per week and sitting time. Total 68 (22.1%) people participated in vigorous-intensity activity, 23 (7.5%) participated in moderate-intensity sports. Overall, 83% of people were physically active more than 600 MET-min. Women (OR 2.95, 95% CI, 1.36–6.39) compared to men, and people with no education (OR 4.47, 95% CI, 1.62–12.33) compared to people with secondary school certificates or above were less physically active. Of total PA, 63% were work-related, and 1% were recreation-related for women, and these figures were 55% and 3% for men. The study reports that vigorous-intensity PA is low, and recreation time is minimal. Routine PA, especially for women and people with low education levels, should be encouraged to increase PA to manage hypertension.

Assessment of Physical Activity in Adults Using Wrist Accelerometers.

The health benefits of physical activity (PA) have been widely recognized, yet traditional measures of PA, including questionnaires and category-based assessments of volume and intensity, provide only broad estimates of daily activities. Accelerometers have advanced epidemiologic research on PA by providing objective and continuous measurement of PA in free-living conditions. Wrist-worn accelerometers have become especially popular because of low participant burden. However, the validity and reliability of wrist-worn devices for adults have yet to be summarized. Moreover, accelerometer data provide rich information on how PA is accumulated throughout the day, but only a small portion of these rich data have been used by researchers. Last, new methodological developments are emerging that aim to overcome some of the limitations of accelerometers. In this review, we provide an overview of accelerometry research, with a special focus on wrist-worn accelerometers. We describe briefly how accelerometers work; summarize the validity and reliability of wrist-worn accelerometers; discuss the benefits of accelerometers, including measuring light-intensity PA; and discuss pattern metrics of daily PA recently introduced in the literature. A summary of large-scale cohort studies and randomized trials that implemented wrist-worn accelerometry is provided. We conclude the review by discussing new developments and directions of research using accelerometers, with a focus on wrist-worn accelerometers.

Assessment of Household Work as Compensation for Physical Activity Deficit Amongst Older Adults in a Nigerian Urban Setting

Urban older adults tend to be physically inactive and often remain indoors. Household work of a sample of 300 urban-dwelling adults (50-65 years) from a Nigerian state capital was therefore investigated for physical activity (PA) levels. Questionnaire on participation in household tasks, time and days/week for the tasks, awareness of health benefits of PA and household work as exercise was used. Greater participation occurred in household chores than outdoor/yard work (70.0 vs 44.0%) while participation varied with specific chores (55.0-70.0%) and yard work (28.7-34.0%). Gender, education, age and living with spouse or children/helper were associated with performance of household chores (P&lt;0.05) as well as with yard work except living with spouse. Prevalence of low-intensity household PA was high with only 0.9-13.8% attaining moderate-intensity level and no vigorous-intensity. Low prevalence of awareness of PA health benefits (32.3%) and household work as exercise (14.4%) was observed, but were related to good performance of household work (OR, 1.50-1.55; CL, 0.55-3.54). The finding that 13% of the respondents attained moderate-intensity PA indicated the potential of household work to compensate for the absence of other physical activities. Thus public health campaigns based on household work as exercise in a gender sensitive African society becomes necessary.

Fear of judgement and women's physical (in)activity experiences

There is a significant body of research that examines the antecedents and consequences of population-level disparities in physical activity engagement. However, there are still vast gendered inequalities with women missing out on the associated health benefits of physical activity compared to men. The purpose of this study is to foster a deep understanding of the ‘fear of judgement’ experienced by physically inactive women to develop policy and practice that can attend to this issue. The theory of reflexive embodiment, rooted in the interactionist tradition, provides the theoretical underpinning for the work as it highlights how women's bodies are influenced by the gaze of others. Results demonstrate that women feel judged for the way their bodies look and move during exercise, for prioritising physical activity over family duties, and that these sensations are influenced by the networks of people in activity spaces. The impact of judgement affects women's mental and physical wellbeing. It leads to the cessation of physical activity, creates worries about restarting various forms of activity and shapes how and where women undertake exercise.

The complex and dynamic interplay between self-esteem, belongingness and physical activity in daily life: An experience sampling study in adolescence and young adulthood

Physical activity has positive effects on self-esteem and sense of belongingness and vice versa. The experience sampling method allows for a level of analysis of the within-subject temporal dynamics of these interactions. We hypothesized that physical activity would predict prospective increases of self-esteem and belongingness in the flow of daily life, and vice versa. Additionally, we hypothesized that belongingness would predict self-esteem at the beep level. The study included 781 individuals (17.4 ± 3.5 years; 59% female) who responded to 10 beeps daily for 6 days to items on physical activity, self-esteem and belongingness. Univariate and multivariate multilevel models were used to examine within-person prospective bidirectional associations. We found that physical activity predicted higher self-esteem and belongingness at t0+1. Participants who had a stronger increase of self-esteem following an increase in physical activity also had a concurrent stronger increase in belongingness. In contrast, self-esteem had no effect on physical activity at the next beep. Belongingness predicted self-esteem. We conclude that the interactions between physical activity, self-esteem and belongingness are complex and fluctuating in daily life. This has important implications for current theories describing the mental health benefits of physical activity.

The impact of motor competence on energy expenditure during object control skill performance in children and young adults

BACKGROUND: An understanding of how motor skill performance levels relate to energy expenditure (EE) is an important, yet relatively unexplored topic that may better inform physical activity interventions. AIM: This study examined the impact of motor competence (MC) on EE during the performance of object control skills in children and young adults. METHOD: Forty-two children (Mage 8.1 years) and 40 young adults (Mage = 23.4 years) completed sessions of throwing and kicking at varying intensity intervals. Polynomial regressions with response surface analysis were conducted to analyze the impact of process- and product-oriented MC levels on EE. RESULTS: Moderate positive associations among process-oriented motor competence levels and EE were demonstrated in all trial interval conditions with stronger associations shown for shorter trial intervals. CONCLUSION: Individuals’ movement quality (process) demonstrated greater associations with EE than performance product (speed), especially with higher intensity skill practice. These results provide additional evidence of the positive impact that MC has on the health benefits of physical activity, specifically during participation in activities that inherently require repeated performance of object control skills.

Reasons for Sports-Based Physical Activity Dropouts in University Students.

Despite extensive evidence reporting the numerous health benefits of physical activity, recent studies show that many people (60%) do not follow the recommendations to meet the accepted minimums of physical activity. Some of the main problems in today’s society are the high dropout rates (35%) and low adherence to the conditions for achieving the physical activity recommendations. The aim of the study is to analyze the reasons for dropout from sports that the participants particularly liked, to design a new scale of reasons as to why they dropped out based on several previously existing scales, and to study the dropout differences based on different variables. The sample consisted of 813 Vizcaya university students (61.6% women and 38.4% men), aged between 18 and 29 (M = 20.5; SD = 1.8). Frequency distributions, univariate descriptive analyses, and bivariate statistical analyses, such as t-test, analysis of variance, and correlations, were analyzed. The construct validity of the dropout reasons questionnaire was analyzed by combining an Exploratory Factor Analysis (n = 406) and a Confirmatory Factor Analysis (n = 407). The five-factor measurement model was appropriate and allowed to identify the factor rankings and its relation to some key variables. Lack of time (or dedication to other activities unrelated to physical activity) and fatigue seem to be the main factors for dropping out. The life changes produced at the time of entry and during university life seem to guide students to value other activities.

Associations of Physical Fitness and Academic Achievement Among Illinois High School Students

The health benefits of physical activity are empirically supported and well accepted. However, the relationship between physical activity, physical fitness, and academic performance remains to be clearly established. The purpose of this study was to identify the relationship between physical fitness and academic achievement among a sample of Illinois high school students. Analyses were based on the 2016–2017 school year Archival Fitnessgram physical fitness test scores and cumulative GPAs of ninth- through twelfth-grade students (N = 371). Pearson correlation assessed the relationship between physical fitness and academic performance. Multiple linear regression predicted students’ academic achievement. There was a positive association between total fitness and academic achievement, although not statistically significant, r (369) = .002, p = .49. The regression prediction model was statistically significant (p &lt; .001) and accounted for approximately 25% of the variance in academic achievement (R2 = .256, adjusted R2 = .246). Academic achievement was predicted by total number of absences and gender, and to a lesser extent by socio­economic status, the curl-up, and ethnicity. The findings of this study suggest a positive association between physical fitness and academic achievement. These results are potentially relevant to the development of future education policies. Thus, policy makers, school administrators, and educators must use the knowledge gained in this study, along with existing research, as evidence to emphasize the importance of the fitness–academic link, to further support the need for quality physical education curriculum and mandated physical fitness testing.

Exercise training in chronic kidney disease-effects, expectations and adherence.

There is increasing evidence showing the health benefits of physical activity, such as better survival and possibly even a slower decline in kidney function, in people with chronic kidney disease (CKD). There is convincing evidence that exercise training improves physical function measured as aerobic capacity, muscle endurance strength and balance at all ages and all stages of CKD. In fact, long-term adherence to well-designed and adequately monitored exercise training programmes is high. In general, patients express interest in exercise training and are motivated to improve their physical function and health. A growing number of nephrologists regard physical activity and exercise training as beneficial to patients with CKD. However, many feel that they do not have the knowledge to prescribe exercise training and suppose that patients are not interested. Patients state that support from healthcare professionals is crucial to motivate them to participate in exercise training programmes and overcome medical, physical and psychological barriers such as frailty, fatigue, anxiety and fear. Equally important is the provision of funding by healthcare providers to ensure adequate prescription and follow-up by trained exercise physiologists for this important non-pharmacological treatment.

Effect of Anterior Cruciate Ligament Rupture on Physical Activity, Sports Participation, Patient-Reported Health Outcomes, and Physical Function in Young Female Athletes

Background: Return to sports (RTS) is frequently considered an indicator of successful recovery after anterior cruciate ligament reconstruction (ACLR). However, despite the well-recognized health benefits of physical activity (PA), little is known about objectively measured PA in the 1 to 2 years after ACLR. Given that young female athletes have a high prevalence of ACLR and lower RTS rates as compared with their male counterparts, an in-depth examination of PA in this subgroup is warranted. Hypothesis: We hypothesized that female youth and young adults who have had ACLR in the previous 1 to 2 years would have less moderate or vigorous PA (MVPA) compared with healthy matched controls. We also hypothesized that the ACLR group would report lower levels of sports participation, patient-reported health outcomes, and physical function. Study Design: Cohort study; Level of evidence, 3. Methods: Participants included 51 female athletes with primary unilateral ACLR for a sports-related injury in the previous 1 to 2 years and 51 age- and sports-matched controls. Outcomes included objectively measured PA (GT3X accelerometers), previous and current sports participation and RTS, body mass index, Knee injury and Osteoarthritis Outcome Score (KOOS), triple single-leg hop, and one-leg rise. Mean within-pair differences with 95% CIs were used to assess differences between groups across all outcomes. Multivariable linear regression (clustered by pair) was used to examine whether the ACLR group had less MVPA than did the age- and sports-matched control group, adjusting for total wear time, age, time since injury, and body mass index. Results: Median age was 17.8 years (range, 14.6-22.6 years). There was no significant difference between groups in MVPA. However, the injury group had fewer mean minutes per day of vigorous PA (–1.22; 95% CI, −2.40 to −0.04), poorer KOOS values on all subscales, and shorter triple single-leg hop distance. In the injury group, 28 (55%) returned to sports, including 14 (27.5%) who returned at preinjury performance level. Across both groups, over one-third changed their most important sport, shifting toward an individual-based sport. Conclusion: At 1 to 2 years after ACLR, female athletes demonstrated no differences in combined MVPA and only a very small reduction in vigorous PA, yet they had higher levels of self-reported knee pain and symptoms, reduced knee function in sports, lower quality of life, and poorer objective knee function compared with matched controls.

Association of the combined effects of air pollution and changes in physical activity with cardiovascular disease in young adults.

Little is known about the trade-off between the health benefits of physical activity (PA) and the potential harmful effects of increased exposure to air pollution during outdoor PA. We examined the association of the combined effects of air pollution and changes in PA with cardiovascular disease (CVD) in young adults. This nationwide cohort study included 1469972 young adults aged 20-39 years. Air pollution exposure was estimated by the annual average cumulative level of particulate matter (PM). PA was calculated as minutes of metabolic equivalent tasks per week (MET-min/week) based on two consecutive health examinations from 2009 to 2012. Compared with the participants exposed to low-to-moderate levels of PM2.5 or PM10 who continuously engaged in ≥1000 MET-min/week of PA, those who decreased their PA from ≥1000 MET-min/week to 1-499 MET-min/week [PM10 adjusted hazard ratio (aHR) 1.22; 95% confidence interval (CI) 1.00-1.48] and to 0 MET-min/week (physically inactive; PM10 aHR 1.38; 95% CI 1.07-1.78) had an increased risk of CVD (P for trend <0.01). Among participants exposed to high levels of PM2.5 or PM10, the risk of CVD was elevated with an increase in PA above 1000 MET-min/week. Reducing PA may lead to subsequent elevation of CVD risk in young adults exposed to low-to-moderate levels of PM2.5 or PM10, whereas a large increase in PA in a high-pollution environment may adversely affect cardiovascular health.

Elementary Students' Knowledge Development during the Implementation of "After School Exercise" Program.

Physical education should focus not only on students’ motor and emotional development but also on their cognitive development. The purpose of the present study was to examine whether elementary students’ health-related knowledge and physical activity-related goal setting increased after they participated in a program. The program aimed at promoting after school physical activity among students. Participants were 244 fifth- and sixth-grade students (116 boys and 128 girls). Students’ knowledge was examined by means of a multiple-choice test, cognitive assignments and a retrospective pre–post questionnaire. The results from the three measures indicated that students enhanced their knowledge both regarding the health benefits of physical activity (PA) and effective goal setting. Hence, it can be argued that the program was effective in promoting students’ skills and knowledge related to PA.

Exposomes and metabolic health through a physical activity lens: a narrative review.

In this narrative review, we provide an overview of the role of physical activity as part of differing exposomes (our combined non-genetic exposures from conception onwards) and environmental influences on metabolic health. We discuss 'beneficial' exposomes (green/natural outdoor spaces, sun exposure, healthy diets and features of built environments) that could synergise with physical activity to prevent metabolic dysfunction, particularly that related to lifestyle diseases of obesity, type 2 diabetes and metabolic syndrome. Physical activity may also reduce the capacity of some adverse exposomes, specifically those with significant levels of air pollution, to contribute towards metabolic dysfunction. Other exposomes, such as those experienced during pandemics (including COVID-19), potentially limit opportunities for physical activity, and there may be unexpected combined effects of physical activity with other infections (e.g. adenovirus-36) on metabolic health. Finally, we discuss how environments could be better optimised to create exposomes that promote the health benefits of physical activity and likely future directions of this research field.

Do adults with non-communicable diseases meet the German physical activity recommendations?

IntroductionThe numerous health benefits of physical activity (PA) for people with non-communicable diseases (NCDs) are well-documented. In Germany, there are limited data on whether adults with NCDs fulfill health-oriented PA recommendations. This study describes the prevalence of meeting PA recommendations among adults with select NCDs.MethodBased on the national representative GEDA-2014/2015-EHIS (N = 24,016), the self-reported PA data of the European Health Interview Survey–Physical Activity Questionnaire (EHIS-PAQ) were classified with respect to fulfilling recommendations for health-enhancing aerobic activities (≥ 150 min per week with at least moderate intensity) and muscle strengthening (≥ 2 times per week). These binary indicators were used to analyze the association between the prevalence of sufficient PA and the self-reported presence of certain NCDs and multiple NCDs to reflect multimorbidity.ResultsCompared to the general adult population, sufficient aerobic PA was lower for most NCDs, with the lowest level among people with diabetes mellitus, obesity, stroke, chronic obstructive pulmonary disease (COPD), and depression. Compared to the general adult population, sufficient muscle strengthening was lower for some NCDs (diabetes mellitus, obesity, depression), but it was higher in people with musculoskeletal diseases (osteoarthritis, lower back pain). Multimorbidity was negatively associated with sufficient PA levels.ConclusionThe study specifies the need to promote PA among adults with select NCDs to counteract insufficient levels of health-enhancing PA and to reduce the individual and societal burden of NCDs.

\u201cIt makes me feel not so alone\u201d: features of the Choose to Move physical activity intervention that reduce loneliness in older adults

BackgroundDespite the well-known health benefits of physical activity (PA), older adults are the least active citizens. Older adults are also at risk for loneliness. Given that lonely individuals are at risk for accelerated loss of physical functioning and health with age, PA interventions that aim to enhance social connectedness may decrease loneliness and increase long-term PA participation. The objectives of this mixed-method study are to: (1) evaluate whether an evidence-based PA intervention (Choose to Move; CTM) influenced PA and loneliness differently among self-identified ‘lonely’ versus ‘not lonely’ older adults and (2) to describe factors within CTM components most likely to promote social connectedness/reduce loneliness.MethodsCTM is a flexible, scalable, community-based health promoting physical activity intervention for older adults. Two community delivery partner organizations delivered 56 CTM programs in 26 urban locations across British Columbia. We collected survey data from participants (n = 458 at baseline) at 0 (baseline), 3 (mid-intervention) and 6 (post-intervention) months. We conducted in depth interviews with a subset of older adults to understand how CTM facilitated or impeded their PA and social connectedness.ResultsPA increased significantly from baseline to 3 months in lonely and not lonely participants. PA decreased significantly from 3 to 6 months in lonely participants; however, PA at 6 months remained significantly above baseline levels in both groups. Loneliness decreased significantly from baseline to 3 and 6 months in participants identifying as lonely at baseline. Factors within CTM components that promote social connectedness/reduce loneliness include: Activity coach characteristics/personality traits and approaches; opportunity to share information and experiences and learn from others; engagement with others who share similar/familiar experiences; increased opportunity for meaningful interaction; and accountability.ConclusionHealth promoting interventions that focus on PA and social connectedness through group-based activities can effectively reduce social isolation and loneliness of older adults. Given the ‘epidemic of loneliness’ that plagues many countries currently, these kinds of interventions are timely and important. Research that further delineates mechanisms (e.g., sharing experiences vs. lectures), that modify the effect of an intervention on social connectedness outcomes for older adults engaged in community-based PA programs would be a welcome addition to the literature.

Promoting physical activity in young adult cancer survivors using mHealth and adaptive tailored feedback strategies: Design of the Improving Physical Activity after Cancer Treatment (IMPACT) randomized controlled trial

IntroductionDespite the health benefits of physical activity for cancer survivors, nearly 60% of young adult cancer survivors (YACS) are physically inactive. Few physical activity interventions have been designed specifically for YACS. PurposeTo describe the rationale and design of the IMPACT (IMproving Physical Activity after Cancer Treatment) trial, which tests the efficacy of a theory-based, mobile physical activity intervention for YACS. MethodsA total of 280 physically inactive YACS (diagnosed at ages 18–39) will be randomized to a self-help control or intervention condition. All participants will receive an activity tracker and companion mobile app, cellular-enabled scale, individual videochat session, and access to a Facebook group. Intervention participants will also receive a 6-month mobile intervention based on social cognitive theory, which targets improvements in behavioral capability, self-regulation, self-efficacy, and social support, and incorporates self-regulation strategies and behavior change techniques. The program includes: behavioral lessons; adaptive goal-setting in response to individuals' changing activity patterns; tailored feedback based on objective data and self-report measures; tailored text messages; and Facebook prompts encouraging peer support. Assessments occur at baseline, 3, 6, and 12 months. The primary outcome is total physical activity min/week at 6 months (assessed via accelerometry); secondary outcomes include total physical activity at 12 months, sedentary behavior, weight, and psychosocial measures. ConclusionsIMPACT uniquely focuses on physical activity in YACS using an automated tailored mHealth program. Study findings could result in a high-reach, physical activity intervention for YACS that has potential to be adopted on a larger scale and reduce cancer-related morbidity. ClinicalTrials.gov Identifier: NCT03569605.