Self-reported Exercise Behavior Research Articles

Relationships among age, motivation, and exercise among women Veterans

Physical activity (PA) and exercise are central to maintaining health, however research has shown steep declines in PA and exercise among women Veterans as they age. Though motivation may be an important contributor to initiating and sustaining exercise that may change across the lifespan, little is known about exercise motivation and its relation to age and exercise behavior among women Veterans. This cross-sectional study sought to describe exercise motivations, examine relationships among exercise motivations and age, and explore the degree to which age and motivation predict self-reported exercise behavior among women Veterans. We conducted a secondary data analysis from a regional mail survey of 197 women Veterans (mean age = 51; SD = 10.5) enrolled in Veterans Health Administration primary care in a northeastern region (N = 180 in analysis). Measures included demographics (age, body mass index), self-reported exercise motivation, and an estimate of average weekly exercise. Participants endorsed multiple motivators for exercise, most prominently fitness and health management. Age was significantly negatively related to amount of exercise and with socializing as an exercise motivation. After accounting for body mass index, age was a significant predictor of exercise behavior, and exercise motivations accounted for an additional 7.3% of variance in self-reported weekly exercise. Our results suggest that although motivation is a potentially important predictor of exercise, factors beyond motivation may better predict exercise in women Veterans. Further research is needed on personal and practical facilitators and barriers to exercise in this population.

The Impact of COVID-19 Health and Safety Measures on the Self-Reported Exercise Behaviors and Mental Health of College Students.

The public-health restrictions (e.g., remote learning, restricted access to facilities and dining halls) put in place by colleges to reduce the spread of COVID-19 resulted in forced isolation and modifications to health-related behaviors. The restrictions and uncertainty associated with COVID-19 may have exacerbated the challenges of meeting exercise recommendations and mental-health concerns. The purpose of this study was to assess the impact of restrictions on students' exercise habits and their levels of anxiety, stress, and depression. Five-hundred and forty students completed a 29-question survey on individual demographics, living arrangements, exercise, sleep, diet, and mental health. Significant changes in weekly days of exercise and intensity were reported. Increases in anxiety, stress, and depression were reported. The two most frequently reported changes in exercise behavior were an increase in minutes of aerobic training (5%) and a combination of reduced minutes of aerobic and resistance training (3.9%), which could be reflective of an individual's ability and/or desire to maintain exercise behavior during the restrictions. Alternatively, for those students who reduced their exercise habits, aerobic training (11%) was the mode that suffered the most. Demographic factors such as ethnicity, regional residence, and gender were found to have significant effects on stress, anxiety, and depression. Amidst pandemics and future health emergencies, colleges should prioritize establishing opportunities for students to exercise, helping them meet physical activity recommendations and combat mental-health issues.

Habitual exercise evokes fast and persistent adaptation during split-belt walking.

Changing movement patterns in response to environmental perturbations is a critical aspect of gait and is related to reducing the energetic cost of the movement. Exercise improves energetic capacity for submaximal exercise and may affect how people adapt movement to reach an energetic minimum. The purpose of this study was to determine whether self-reported exercise behavior influences gait adaptation in young adults. Young adults who met the optimal volume of exercise according to the Physical Activity Guidelines for Americans (MOVE; n = 19) and young adults who did not meet the optimal volume of exercise (notMOVE; n = 13) walked on a split-belt treadmill with one belt moving twice the speed of the other belt for 10 minutes. Step length asymmetry (SLA) and mechanical work done by each leg were measured. Nonlinear mixed effects models compared the time course of adaptation between MOVE and notMOVE, and t-tests compared net work at the end of adaptation between MOVE and notMOVE. Compared to notMOVE, MOVE had a faster initial response to the split belt treadmill, and continued to adapt over the duration of split-belt treadmill walking. Young adults who engage in sufficient amounts of exercise responded more quickly to the onset of a perturbation, and throughout the perturbation they continued to explore movement strategies, which might be related to reduction of energetic cost. Our findings provide insights into the multisystem positive effects of exercise, including walking adaptation.

Adherence to unsupervised exercise in sedentary individuals: A randomised feasibility trial of two mobile health interventions.

Adherence to unsupervised exercise is poor, yet unsupervised exercise interventions are utilised in most healthcare settings. Thus, investigating novel ways to enhance adherence to unsupervised exercise is essential. This study aimed to examine the feasibility of two mobile health (mHealth) technology-supported exercise and physical activity (PA) interventions to increase adherence to unsupervised exercise. Eighty-six participants were randomised to online resources (n = 44, females n = 29) or MOTIVATE (n = 42, females n = 28). The online resources group had access to booklets and videos to assist in performing a progressive exercise programme. MOTIVATE participants received exercise counselling sessions supported via mHealth biometrics which allowed instant participant feedback on exercise intensity, and communication with an exercise specialist. Heart rate (HR) monitoring, survey-reported exercise behaviour and accelerometer-derived PA were used to quantify adherence. Remote measurement techniques were used to assess anthropometrics, blood pressure, HbA1c and lipid profiles. HR-derived adherence rates were 22 ± 34% and 113 ± 68% in the online resources and MOTIVATE groups, respectively. Self-reported exercise behaviour demonstrated moderate (Cohen's d = 0.63, CI = 0.27 to 0.99) and large effects (Cohen's d = 0.88, CI = 0.49 to 1.26) in favour of online resources and MOTIVATE groups, respectively. When dropouts were included, 84% of remotely gathered data were available, with dropouts removed data availability was 94%. Data suggest both interventions have a positive impact on adherence to unsupervised exercise but MOTIVATE enables participants to meet recommended exercise guidelines. Nevertheless, to maximise adherence to unsupervised exercise, future appropriately powered trials should explore the effectiveness of the MOTIVATE intervention.

Relationship Between Self-reported Exercise Behaviors And Nocturia In Geriatric Populations

Relationship Between Self-reported Exercise Behaviors And Nocturia In Geriatric Populations

Who We Are And What We Do: An Exploration Of Individual Differences For Exercise Behavior

BACKGROUND: Even with the well-known and well-advertised preventative and therapeutic benefits of regular exercise, only ~20-25% of adults self-report meeting exercise recommendations, and the prevalence decreases to ~10-15% when behavior is assessed using device-based recordings. With 75-90% of adults failing to engage in enough exercise to reap the health benefits, it is crucial to direct efforts towards understanding why individuals do or do not choose to engage in exercise behavior. PURPOSE: Determine the extent to which personality dispositions and exercise attitudes explain future exercise behavior. METHODS: Undergraduates (N=84, 20±2 yrs, 50 ♀, 73% regular exercisers) completed an online survey to assess Extraversion (E), Conscientiousness (C), and Neuroticism (N; via Big Five Inventory), as well as exercise attitudes (via Affective Exercise Experiences). 2-weeks following initial survey completion, participants completed a 7-day journal where exercise type, intensity, duration, and frequency were self-reported each day. Separate, stepwise regressions were performed to determine explained variance on average exercise intensity, average duration, and frequency. RESULTS: E, C, and N were not related to exercise intensity (rs = -0.15 - 0.00, Ps= .07-0.33), duration (rs = -0.14 - 0.02, Ps= 0.09-0.50), or frequency (rs = -0.16 - -0.04, Ps= 0.07-0.33) and were removed from subsequent regression models. Affective attitudes toward exercise explained significant variance in average exercise intensity (F(3,80)=7.85, P<0.001, R2adj =0.20) and exercise frequency (F(3,80)=2.91, P=0.040, R2adj =0.07), but did not explain variance in average exercise duration (F(3,80)=1.99, P=0.122, R2adj=0.04). CONCLUSION: While E, C, and N were not related to self-reported exercise behavior, attitudes towards exercise (e.g., belief exercise will bring pleasure, preference for exercise over sedentary behavior, feeling empowered by, or a sense of competence, with exercise) explained 23% and 7% variance in average exercise intensity and frequency (i.e., d·wk-1), respectively. This suggests affective attitudes play an important role in how vigorous an individual exercises as well as provides some explanation for how frequently someone will exercise, which may result in greater health benefits.

The Influence of Memorable Message Receipt on Dietary and Exercise Behavior among Self-Identified Black Women

ABSTRACT Guided by Control Theory and the memorable messages framework, the current investigation examined the relationship between receipt of a health-related memorable message and self-reported diet and exercise behavior. A cross-sectional survey methodology was utilized to evaluate the relationship between receipt of a memorable message and dietary and exercise behaviors in a sample of Black women. Over 80% of the research sample (N = 121) reported receiving a memorable health message regarding diet and/or exercise. Women receiving a memorable message reported a significantly higher number of days engaging in healthy eating and exercise behaviors each week. Messages from medical professionals had the greatest impact on healthy dietary practices, while media-based messages were most influential on the enactment of exercise behavior. Additional research is warranted to determine how the utilization and reinforcement of memorable messages impacts health outcomes among Black women.

Exercise and health-related fitness predictors of chemotherapy completion in breast cancer patients: pooled analysis of two multicenter trials.

Achieving a higher chemotherapy completion rate is associated with better outcomes in breast cancer patients. We examined the role of exercise and health-related fitness variables in predicting chemotherapy completion in early stage breast cancer patients. We pooled data from two large, multicenter, exercise trials that obtained baseline (pre-chemotherapy) measures of exercise and health-related fitness in 543 breast cancer patients initiating adjuvant chemotherapy. Assessments included body composition, cardiovascular fitness, muscular strength, patient-reported physical functioning, and self-reported exercise behavior. Chemotherapy completion was assessed as the average relative dose intensity (RDI) for the originally planned regimen. We used logistic regression analyses with a two-sided p value of < 0.05 to estimate the associations between the predictors and an RDI of ≥ 85%. Overall, 432 of 543 (79.6%) breast cancer patients received an RDI of ≥ 85%. In logistic regression analyses adjusted for significant covariates, patients in the highest 20% vs. lowest 80% of absolute VO2peak were significantly more likely to complete ≥ 85% RDI (89.0% vs. 77.2%; ORadj 2.06, 95% CI 1.07-3.96, p = 0.031). Moreover, patients in the highest 80% vs. lowest 20% of absolute chest strength were significantly more likely to complete ≥ 85% RDI (81.5% vs. 71.4%; ORadj 1.80, 95% CI 1.09-2.98, p = 0.021). In these exploratory analyses, higher baseline (pre-chemotherapy) cardiovascular fitness and muscular strength were associated with higher rates of chemotherapy completion in early stage breast cancer patients. Aerobic and/or strength training interventions that increase cardiovascular fitness and muscular strength prior to chemotherapy for breast cancer may improve treatment tolerability and outcomes. START: NCT00115713, June 24, 2005; CARE: NCT00249015, November 7, 2005 ( http://clinicaltrials.gov ).

Effects of Adiposity and Exercise on Breast Tissue and Systemic Metabo-Inflammatory Factors in Women at High Risk or Diagnosed with Breast Cancer.

Excess body fat and sedentary behavior are associated with increased breast cancer risk and mortality, including in normal weight women. To investigate underlying mechanisms, we examined whether adiposity and exercise impact the breast microenvironment (e.g., inflammation and aromatase expression) and circulating metabo-inflammatory factors. In a cross-sectional cohort study, breast white adipose tissue (WAT) and blood were collected from 100 women undergoing mastectomy for breast cancer risk reduction or treatment. Self-reported exercise behavior, body composition measured by dual-energy x-ray absorptiometry (DXA), and waist:hip ratio were obtained prior to surgery. Breast WAT inflammation (B-WATi) was assessed by IHC and aromatase expression was assessed by quantitative PCR. Metabolic and inflammatory blood biomarkers that are predictive of breast cancer risk and progression were measured. B-WATi was present in 56 of 100 patients and was associated with older age, elevated BMI, postmenopausal status, decreased exercise, hypertension and dyslipidemia (Ps < 0.001). Total body fat and trunk fat correlated with B-WATi and breast aromatase levels (Ps < 0.001). Circulating C-reactive protein, IL6, insulin, and leptin positively correlated with body fat and breast aromatase levels, while negative correlations were observed for adiponectin and sex hormone binding globulin (P < 0.001). Inverse relationships were observed with exercise (Ps < 0.05). In a subgroup of 39 women with normal BMI, body fat levels positively correlated with B-WATi and aromatase expression (Ps < 0.05). In conclusion, elevated body fat levels and decreased exercise are associated with protumorigenic micro- and host environments in normal, overweight, and obese individuals. These findings support the development of BMI-agnostic lifestyle interventions that target adiposity. PREVENTION RELEVANCE: We report that individuals with high body fat and low exercise levels have breast inflammation, higher breast aromatase expression, and levels of circulating metabo-inflammatory factors that have been associated with increased breast cancer risk. These findings support interventions to lower adiposity, even among normal weight individuals, to prevent tumor growth.

Feasibility and Acceptability of a Remotely Delivered, Web-Based Behavioral Intervention for Men With Prostate Cancer: Four-Arm Randomized Controlled Pilot Trial.

BackgroundDiet and exercise may be associated with quality of life and survival in men with prostate cancer.ObjectiveThis study aimed to determine the feasibility and acceptability of a remotely delivered web-based behavioral intervention among men with prostate cancer.MethodsWe conducted a multi-site 4-arm pilot randomized controlled trial of a 3-month intervention (TrueNTH Community of Wellness). Eligibility included self-reported prostate cancer diagnosis, having a personal device that connected to the internet, age ≥18 years, and ability to read English and receive text messages and emails. Men receiving chemotherapy or radiation, or those who reported contraindications to exercise, could participate with physician clearance. Participants were randomized (1:1:1:1) to additive intervention levels: website; website and personalized diet and exercise prescription; website, personalized prescription, Fitbit, and text messages; and website, personalized prescription, Fitbit, text messages, and 2 30-minute phone calls—one with an exercise trainer and one with a registered dietician. Primary outcomes were feasibility (accrual and attrition) and acceptability (survey data and website use). We described self-reported diet and exercise behavior at the time of enrollment, 3 months, and 6 months as secondary outcomes.ResultsIn total, 202 men consented and were randomized between August 2017 and September 2018 (level 1: 49, level 2: 51, level 3: 50, level 4: 52). A total of 160 men completed the onboarding process and were exposed to their randomly assigned intervention (38, 38, 42, and 42 in levels 1, 2, 3, and 4, respectively). The follow-up rate was 82.7% (167/202) at 3 months and 77.2% (156/202) at 6 months. Participants had a median age of 70 years and were primarily White and college educated. Website visit frequency over the 3-month intervention period increased across levels (median: 2, 9, 11, and 16 visits for levels 1, 2, 3, and 4, respectively). Most were satisfied or very satisfied with the intervention (20/39, 51%; 27/42, 64%; 23/44, 52%; and 27/42, 64% for levels 1, 2, 3, and 4, respectively). The percentage of men who reported being very satisfied was highest among level 4 participants (10/42, 24% vs 4/39, 10%; 5/42, 12%; and 5/44, 11% for levels 1, 2, and 3, respectively). Dissatisfaction was highest in level 1 (5/39, 13% vs 1/42, 2%; 3/44, 7%; and 2/42, 5% for levels 2, 3, and 4, respectively). We observed small improvements in diet and physical activity at 3 months among men in level 4 versus those in level 1.ConclusionsA web-based, remotely delivered, tailored behavioral intervention for men with prostate cancer is feasible. Future studies are warranted to increase the effect of the intervention on patient behavior while maintaining sustainability and scalability as well as to design and implement interventions for more diverse populations.Trial RegistrationClinicalTrials.gov NCT03406013; http://clinicaltrials.gov/ct2/show/NCT03406013

Effects of Exercise on Explicit Memory Function: Incidental and Intentional Encoding May Depend on Exercise Timing.

The present experiment evaluated the effects of self-reported exercise behavior and an acute bout of high-intensity exercise on explicit memory function. The memory tasks were encoded either incidentally or intentionally; for intentional encoding, participants were told to focus on memorizing the stimuli (words), whereas for incidental encoding, participants were unaware that they would be subsequently asked to complete an object recognition task. Among a sample of 150 adults (Mage = 20 years), randomly assigned experimental participants engaged in the following task sequence: (a) incidentally encoded a series of objects, (b) engaged in 20 minutes of high-intensity exercise, (c) intentionally encoded a word list, and (d) completed explicit memory retrieval tasks. Control group participants viewed a time matched video in lieu of high intensity exercise. We measured self-reported exercise behavior via an exercise questionnaire. We did not observe convincing evidence of an effect of high-intensity acute exercise, when occurring during the early consolidation period, on memory function, for either incidental or intentional encoding tasks. However, self-reported engagement in moderate-to-vigorous physical activity was favorably associated with explicit memory performance.

Automatic associations and the affective valuation of exercise: disentangling the type-1 process of the affective\u2013reflective theory of physical inactivity and exercise

The decision to exercise is not only bound to rational considerations but also automatic affective processes. The affective–reflective theory of physical inactivity and exercise (ART) proposes a theoretical framework for explaining how the automatic affective process (type‑1 process) will influence exercise behavior, i.e., through the automatic activation of exercise-related associations and a subsequent affective valuation of exercise. This study aimed to empirically test this assumption of the ART with data from 69 study participants. A single-measurement study, including within-subject experimental variation, was conducted. Automatic associations with exercise were first measured with a single-target implicit association test. The somato-affective core of the participants’ automatic valuation of exercise-related pictures was then assessed via heart rate variability (HRV) analysis, and the affective valence of the valuation was tested with a facial expression (FE; smile and frown) task. Exercise behavior was assessed via self-report. Multiple regression (path) analysis revealed that automatic associations predicted HRV reactivity (β = −0.24, p = .044); the signs of the correlation between automatic associations and the smile FE score was in the expected direction but remained nonsignificant (β = −0.21, p = .078). HRV reactivity predicted self-reported exercise behavior (β = −0.28, p = .013) (the same pattern of results was achieved for the frown FE score). The HRV-related results illustrate the potential role of automatic negative affective reactions to the thought of exercise as a restraining force in exercise motivation. For better empirical distinction between the two ART type‑1 process components, automatic associations and the affective valuation should perhaps be measured separately in the future. The results support the notion that automatic and affective processes should be regarded as essential aspects of the motivation to exercise.

Acceptability and Perceived Benefits of Exercise Among Pregnant and Postpartum Women Seeking Psychiatric Care

Background: Exercise may be a potentially helpful strategy to improve mood during the perinatal period. However, little is known about the exercise behaviors and preferences of perinatal women seeking psychiatric care. This study was designed to shed light on the acceptability of exercise-based interventions for this population, and to examine the proportion of perinatal psychiatric patients who report engaging in regular exercise. Materials and Methods: Three hundred perinatal women (31% pregnant, 69% postpartum) seeking psychiatric care completed a survey assessing self-reported exercise behaviors, interest in participating in a perinatal exercise program, and perceived benefits of exercise. Respondents self-reported their presenting psychiatric symptoms and any comorbid health conditions. Results: Fewer than 25% of women surveyed reported any recent exercise, and far less (<9%) reported activity levels consistent with current exercise recommendations. However, 87% reported interest in participating in an exercise program and viewed numerous potential benefits (improved health and energy, sense of accomplishment, better sleep, reduced stress, and less anxiety and depression). More than 65% of women reported significant medical comorbidities; these women were equally interested in exercise programs. Conclusion: In this preliminary study, we found that pregnant and postpartum women seeking psychiatric care reported very low levels of exercise, yet women's interest in participating in a tailored exercise program was high. Findings underscore the potential value of an exercise program for distressed perinatal women. Implementing a tailored exercise program within the context of an existing perinatal care setting could promote access and bode well for initiation and adherence.

Effects of Mobile Health Prompts on Self-Monitoring and Exercise Behaviors Following a Diabetes Prevention Program: Secondary Analysis From a Randomized Controlled Trial.

BackgroundA number of mobile health (mHealth) apps exist that focus specifically on promoting exercise behavior. To increase user engagement, prompts, such as text messages, emails, or push notifications, are often used. To date, little research has been done to understand whether, and for how long, these prompts influence exercise behavior.ObjectiveThis study aimed to assess the impact of prompts on mHealth self-monitoring and self-reported exercise in the days following a prompt and whether these effects differ based on exercise modality.MethodsOf the possible 99 adults at risk for developing type II diabetes who participated in a diabetes prevention program, 69 were included in this secondary analysis. Participants were randomly assigned to 1 of the following 2 exercise conditions: high-intensity interval training or moderate-intensity continuous training. In the year following a brief, community-based diabetes prevention program involving counseling and supervised exercise sessions, all participants self-monitored their daily exercise behaviors on an mHealth app in which they were sent personalized prompts at varying frequencies. mHealth self-monitoring and self-reported exercise data from the app were averaged over 1, 3, 5, and 7 days preceding and following a prompt and subsequently compared using t tests.ResultsIn the year following the diabetes prevention program, self-monitoring (t68=6.82; P<.001; d=0.46) and self-reported exercise (t68=2.16; P=.03; d=0.38) significantly increased in the 3 days following a prompt compared with the 3 days preceding. Prompts were most effective in the first half of the year, and there were no differences in self-monitoring or self-reported exercise behaviors between exercise modalities (P values >.05). In the first half of the year, self-monitoring was significant in the 3 days following a prompt (t68=8.61; P<.001; d=0.60), and self-reported exercise was significant in the 3 days (t68=3.7; P<.001; d=0.37), 5 days (t67=2.15; P=.04; d=0.14), and 7 days (t68=2.46; P=.02; d=0.15) following a prompt, whereas no significant changes were found in the second half of the year.ConclusionsThis study provides preliminary evidence regarding the potential influence of prompts on mHealth self-monitoring and self-reported exercise and the duration for which prompts may be effective as exercise behavior change tools. Future studies should determine the optimal prompting frequency for influencing self-reported exercise behaviors. Optimizing prompt frequency can potentially reduce intervention costs and promote user engagement. Furthermore, it can encourage consumers to self-monitor using mHealth technology while ensuring prompts are sent when necessary and effective.International Registered Report Identifier (IRRID)DERR2-10.2196/11226

Effects of exercise dose and type during breast cancer chemotherapy on longer-term patient-reported outcomes and health-related fitness: A randomized controlled trial.

The Combined Aerobic and Resistance Exercise (CARE) Trial compared different types and doses of exercise performed during breast cancer chemotherapy. Here, we report the longer-term follow-up of patient-reported outcomes, health-related fitness and exercise behavior at 6, 12 and 24 months postintervention. A multicenter trial in Canada randomized 301 breast cancer patients initiating chemotherapy to thrice weekly, supervised exercise consisting of a standard dose of 25-30 min of aerobic exercise (STAN; n = 96), a higher dose of 50-60 min of aerobic exercise (HIGH; n = 101) or a combined dose of 50-60 min of aerobic and resistance exercise (COMB; n = 104) performed for the duration of chemotherapy (median of 17 weeks). Primary outcomes were patient-reported outcomes including quality of life, cancer-related symptoms and psychosocial outcomes. Secondary outcomes were objective health-related fitness (assessed at 12 months only) and self-reported exercise behavior. A total of 269 (89.4%) participants completed patient-reported outcomes at all three follow-up time points and 263 (87.4%) completed the health-related fitness assessment at 12-month follow-up. COMB was significantly superior to (i) STAN for sleep quality at 6-month follow-up (p = 0.027); (ii) HIGH for upper body muscular endurance at 12-month follow-up (p = 0.020); and (iii) HIGH for meeting the resistance exercise guideline at 6-month follow-up (p = 0.006). Moreover, self-reported meeting of the combined exercise guideline during follow-up was significantly associated with better patient-reported outcomes and health-related fitness. Performing combined exercise during and after breast cancer chemotherapy may result in better longer-term patient-reported outcomes and health-related fitness compared to performing aerobic exercise alone.

Self-reported Exercise Behaviour Can Differentiate Cardio-metabolic Risks In Young, Middle-aged And Older Healthy Adults

Self-reported Exercise Behaviour Can Differentiate Cardio-metabolic Risks In Young, Middle-aged And Older Healthy Adults

Abstract P1-15-03: Association between exercise, pathological complete response, and treatment tolerability in patients receiving neoadjuvant chemotherapy for operable breast cancer: Results from the CANTO study

Abstract Background: Randomized trials, although not all, suggest exercise therapy improves treatment completion rates / relative dose intensity in patients with early-stage breast cancer receiving adjuvant chemotherapy (CT). In addition, preclinical studies show that exercise therapy adds to the antitumor activity of standard CT in murine models of breast cancer. We evaluated the association between exercise and pathologic complete response (pCR) rate (i.e., ypT0ypN0) in patients receiving neoadjuvant CT for operable breast cancer. Methods: Using a prospective design, patients with stage I-III breast cancer receiving anthracycline-taxane (± trastuzumab) neoadjuvant CT participating in a multicenter, national cohort study in France (CANTO, NCT01993498) completed questionnaire assessing self-reported exercise behavior (GPAQ 16). Multivariate logistic models were performed to determine the relationship between pre-CT exercise exposure (total MET-h/wk categorized into the proportion of patients meeting WHO exercise guidelines, the equivalent of ≥10 MET-h/wk), pCR rates, CT± trastuzumab dose reductions, delays, treatment completion or interruptions for the overall cohort and on the basis of clinical subtype. Results: Between March, 2012 to December, 2014, a total of 989 patients participating in CANTO received neoadjuvant CT and completed GPAQ 16. Here we present interim analyses on 608 patients. Fifty-four percent of patients engaged on of ≥10 MET-h/wk prior to CT administration. In multivariable analysis for the overall cohort, exercise exposure was not associated with higher pCR (p=0.69). The pCR rate was 27.7% for patients reporting &amp;lt;10 MET h/wkcompared with 28.0% for those reporting ≥ 10 MET-h/wk (OR, 1.02; 95% CI, 0.71-1.45). Stratification analyses indicated no differences on the basis of clinical subtype for hormone receptor (HR) positive/HER2 negative (&amp;lt;10 MET h/wk: 15.1% vs. ≥ 10 MET h/wk: 16.5%; OR, 0.95, 0.41-2.16); HER2 positive (&amp;lt;10 MET h/wk: 38.1% vs. ≥ 10 MET h/wk: 32.5%; OR, 0.62, 0.28-1.35); or triple-negative disease (&amp;lt;10 MET h/wk: 33.3% vs. ≥ 10 MET h/wk: 36.7%; OR, 1.04, 0.52-2.10). Rates of CT dose reductions (&amp;lt;10 MET h/wk: 16.1% vs. ≥ 10 MET h/wk: 18.3%), CT dose delays (&amp;lt;10 MET h/wk: 19.9% vs. ≥ 10 MET h/wk: 19.8%), CT completion (&amp;lt;10 MET h/wk: 12.03% vs. ≥ 10 MET h/wk: 11.45%) trastuzumab interruptions (&amp;lt;10 MET h/wk: 9.01% vs. ≥ 10 MET h/wk: 7.95%) were also not different on the basis of exercise exposure. Conclusion: On the basis of interim analyses, higher pretreatment exercise exposure is not associated with higher clinical response or treatment tolerability in breast cancer patients receiving uniform conventional neoadjuvant CT. Full results will be presented at the meeting. Citation Format: Baker JL, Di Meglio A, El Mouhebb M, Iyengar NM, Michiels S, Cottu P, Lerebours F, Coutant C, Lesur A, Tredan O, Soulie P, Vanlemmens L, Jouannaud C, Levy C, Everhard S, Martin A-L, Arveux P, Fabrice A, Vaz Luis I, Jones LW. Association between exercise, pathological complete response, and treatment tolerability in patients receiving neoadjuvant chemotherapy for operable breast cancer: Results from the CANTO study [abstract]. In: Proceedings of the 2018 San Antonio Breast Cancer Symposium; 2018 Dec 4-8; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2019;79(4 Suppl):Abstract nr P1-15-03.

Predicting exercise motivation and exercise behavior: A moderated mediation model testing the interaction between perceived exercise variety and basic psychological needs satisfaction

ObjectivesPerceived variety in exercise predicts exercise behavior through autonomous motivation. However, psychological need satisfaction (viz. for competence, autonomy, and relatedness) may moderate the relationship between perceived variety in exercise and exercise behavior (through autonomous motivation). The purpose of the present study was to examine whether the satisfaction of the basic psychological needs in exercise contexts moderates the mediating role of autonomous exercise motivation in the relationship between perceived variety in exercise and exercise behavior. DesignCross-sectional. MethodAdults (N = 499) completed an online questionnaire to measure the study variables. Associations were examined using structural equation modeling. ResultsPsychological need satisfaction moderated the positive indirect relationship between perceived exercise variety and self-reported exercise behavior (via autonomous motivation) such that perceived variety was associated with exercise behavior when psychological need satisfaction scores were lower than average. ConclusionsBased on these findings, perceived exercise variety may act as a compensatory source of motivation when psychological need satisfaction is low. In addition to attempting to foster need-supportive exercise contexts, it may be particularly important for exercise promotion specialists to foster the experience of variety among individuals who have lower psychological need satisfaction.

The dynamics of success and failure: how post-behaviour evaluations relate to subsequent exercise intentions and behaviour

Objective: Exercise behaviour change involves multiple experiences with success and failure. The Model of Action Phases (MAP) offers a dynamic account of how success and failure influence both immediate evaluations and future decisions and actions. However, predictions from the MAP have not been formally tested.Design: A longitudinal daily diary study was used to examine how post-behaviour evaluations of exercise success and failure influence subsequent exercise intentions and behaviour. Participants (N = 104) set exercise goals, and then kept a daily online exercise diary for four weeks.Main outcome measures: Participants self-reported exercise behaviour, affective response to exercise, self-evaluations after success or failure at following through on intentions to exercise, and intentions to exercise in the next week.Results: Multilevel modelling revealed significant within- and between-participant relationships among post-behaviour evaluations, intentions and subsequent behaviour. Findings supported MAP-derived predictions about how success and failure at exercise are associated with feelings about exercise and the self, and inform subsequent exercise intentions and behaviour.Conclusion: Positive post-behaviour evaluations of success or failure may stabilise positive intentions and aid maintenance of exercise behaviour. Implications of these MAP-based findings for intervention design are discussed.

The Feasibility of Community-Based, Supervised Exercise Programs to Engage and Monitor Patients in a Postrehabilitation Setting.

Objective. To evaluate the feasibility of disease-specific, community-based supervised exercise programs (CSEPs) to improve biometric and functional outcomes among persons with a variety of chronic medical conditions. Design. Feasibility, cohort study. Subjects were recruited through community placed flyers and provider offices. Exercise programs consisted of aerobic and resistance training that adhered to American College of Sports Medicine guidelines. A Wilcoxon signed rank test was used to assess program outcomes. Setting. Ten, community-based, medical fitness centers. Subjects. A total of 382 total participants. The number of participants in each CSEP ranged from 38 to 119. Individuals were 18 years of age or older and treated for various chronic medical conditions. Results. Varied by cohort, but generally consisted of (a) favorable changes in body composition ( P < .05), (b) significant improvements in submaximal exercise tolerance and functional outcome measures ( P < .05), and (3) significant increase in self-reported exercise behaviors ( P < .05). Conclusion. CSEPs improve outcomes in patients with chronic medical conditions and may be relevant within the continuum of care in outpatient rehabilitation medicine, particularly among bundled or value-based payment models. Further research is needed to evaluate outcomes from CSEPs versus controls.