Melanie R. Keats

Physical activity for men receiving androgen deprivation therapy for prostate cancer: benefits from a 16-week intervention

Goals of workProstate cancer patients receiving androgen deprivation therapy (ADT) are vulnerable to a number of potentially debilitating side effects, which can significantly impact quality of life. The role of alternate therapies, such as physical activity (PA), in attenuating these side effects is largely understudied for such a large population. Thus, the purpose of this study was to investigate the effects of PA intervention for men receiving ADT on PA behavior, quality of life, and fitness measures.Patients and methodsOne hundred participants were randomized into an intervention (n = 53) or a wait-list control group (n = 47), with 11 dropping out of the intervention group and 23 dropping out of the wait-list control group prior to post-testing. The intervention consisted of both an individually tailored home-based aerobic and light resistant training program and weekly group sessions. PA, quality of life, fitness, and physiological outcomes were assessed pre and post the 16-week intervention.ResultsSignificant increases in PA, supported by changes in girth measures and blood pressure, support the beneficial impact of the intervention. Positive trends were also evident for depression and fatigue. However, due to the high dropout rate, these results must be interpreted with caution.ConclusionsPA effectively attenuates many of the side effects of ADT and should be recommended to prostate survivors as an alternate therapy. Determining the maintenance of this behavior change will be important for understanding how the long-term benefits of increased activity levels may alleviate the late effects of ADT.

A community-based physical activity program for adolescents with cancer (project TREK): program feasibility and preliminary findings.

Introduction As the number of pediatric survivors continues to grow, a greater emphasis is being placed on identifying long-term health risk/protecting behaviors. The primary purpose of this pilot study was to examine the feasibility of a theoretically-based physical activity (PA) intervention in adolescents with cancer. Methods A group PA intervention was administered to participants over 16 weeks. Program attendance/adherence, total PA, physical fitness, and quality of life (QOL) were assessed at 5 different intervals over the 1-year study duration. Results Over a period of 6 weeks, 11 adolescents responded to recruitment efforts. Ten ultimately enrolled and completed the 1-year study. Overall, the program was well received with attendance over the 16-week intervention averaging 81.5%. Although improvements in total PA, physical fitness, and QOL were noted across the intervention, follow-up data revealed that participants failed to maintain their postintervention PA levels at both the 3 and 12-month follow-up assessments. Conclusions Adolescents with a history of cancer are undoubtedly susceptible to the same maladaptive health habits as are their healthy peers. Innovative interventions aimed at improving their adherence to positive behavioral interventions, such as PA are warranted. Although not without limitations, this study provides preliminary data in support of a university-sponsored PA intervention.

Are We Having Fun Yet?: Fostering Adherence to Injury Preventive Exercise Recommendations in Young Athletes

Sport and recreational activities are the leading cause of injury in youth, yet there is increasing evidence that many sport-related injuries are preventable. For injury prevention strategies to be effective, individuals must understand, adopt and adhere to the recommended prevention strategy or programme. Despite the recognized importance of a behavioural approach, the inclusion of behavioural change strategies in sport injury prevention has been historically neglected. The purpose of this commentary is to outline the rationale for the inclusion and application of behavioural science in reducing the burden of injury by increasing adherence to proven prevention strategies. In an effort to provide an illustrative example of a behavioural change approach, the authors suggest a specific plan for the implementation of a neuromuscular training strategy to reduce the risk of lower limb injury in youth sport. Given the paucity of evidence in the sport injury prevention setting, and the lack of application of theoretical frameworks to predicting adoption and adherence to injury preventive exercise recommendations in youth sport, data from the related physical activity promotion domain is utilized to describe how sound, theory-based injury prevention exercise interventions in youth may be developed. While the question of how to facilitate behavioural change and optimize adherence to preventive exercise recommendations remains an ongoing challenge, the authors detail several strategies based on two prominent behavioural theories to aid the reader in conceptualizing, designing and implementing effective interventions. Despite the minimal application of behavioural theory within the field of sport injury prevention in youth, behavioural science has the potential to make a significant impact on the understanding and prevention of youth sport injury. Appropriate evaluation of adherence and maintenance components based on models of behavioural change should be a critical component of future injury prevention research and practice.

Ties That Bond: Youth Sport as a Vehicle for Social Identity and Positive Youth Development

ABSTRACT An emerging area of research has focused on understanding how the group dynamics of a sport team influence positive youth development (PYD). The identities that youth form through their membership in sport teams (i.e., social identities) have been found to influence teammate behavior and team performance. Yet, minimal work exists on social identity and PYD in youth sport. Purpose: The purpose of this study was to investigate the relationship between social identity and PYD in sport. Method: Youth engaged in recreational sport (N = 219; Mage = 11.61 years, SD = 1.39 years) completed measures of social identity and PYD in sport. The social identity measure assessed 3 dimensions including ingroup ties (IGT; perceptions of similarity, bonding, belongingness), cognitive centrality (importance of being a team member), and ingroup affect (IGA; feelings associated with group membership). A regression analysis was performed separately for 4 PYD outcomes (personal and social skills, goal setting, initiative, negative experiences) with the 3 dimensions of social identity entered as predictors. Results: Regression analyses revealed that IGT and IGA were positively associated with personal and social skills (R2 Adj. = .29). Further, IGT predicted initiative (R2 Adj. = .16), whereas IGA was positively associated with goal setting (R2 Adj. = .17) and negatively associated with negative experiences (R2 Adj. = .08). Conclusion: The findings extend previous research highlighting the benefits of social identity on teammate behavior and team performance and demonstrate how social identity may contribute to PYD through sport.

The Physical Activity Preferences of Gynecologic Cancer Survivors

PURPOSE/OBJECTIVES To identify physical activity (PA) preferences of gynecologic cancer survivors (GCSs) and to understand the reasons for them. DESIGN Population-based, cross-sectional mailed survey and semistructured interviews with a subsample. SETTING Nova Scotia, Canada. SAMPLE 239 GCSs completed the survey, and 16 participated in an interview. METHODS GCSs identified from a provincial cancer registry completed a questionnaire assessing PA preferences. Survey respondents were asked to participate in a substudy exploring PA preferences through a semistructured interview. MAIN RESEARCH VARIABLES Self-reported PA and PA preferences. FINDINGS Analyses indicated that participants were interested in a PA program. Interviews highlighted that PA counseling was highly desired and should include discussions about the benefits and appropriate amounts of PA, as well as available opportunities for PA. CONCLUSIONS GCSs have preferences regarding characteristics of PA discussions and programs. IMPLICATIONS FOR NURSING Oncology nurses are integral to the promotion of PA in GCSs. Providing oncology nurses with training opportunities to learn about PA for cancer survivors is an important consideration for cancer centers in ensuring a satisfactory experience for cancer survivors.

Association between Diet Quality and Adiposity in the Atlantic PATH Cohort

The aim of this study was to examine diet quality among participants in the Atlantic Partnership for Tomorrow’s Health (PATH) cohort and to assess the association with adiposity. Data were collected from participants (n = 23,768) aged 35–69 years that were residents of the Atlantic Canadian provinces. Both measured and self-reported data were used to examine adiposity (including body mass index (BMI), abdominal obesity, waist-to-hip ratio and fat mass) and food frequency questionnaires were used to assess diet quality. Overall, diet quality was statistically different among provinces. Of concern, participants across all the provinces reported consuming only 1–2 servings of vegetables and 1–2 servings fruit per day. However, participants also reported some healthy dietary choices such as consuming more servings of whole grains than refined grains, and eating at fast food restaurants ≤1 per month. Significant differences in BMI, body weight, percentage body fat, and fat mass index were also observed among provinces. Adiposity measures were positively associated with consumption of meat/poultry, fish, snack food, sweeteners, diet soft drinks, and frequenting fast food restaurants, and inversely associated with consumption of whole grains and green tea. Although all four provinces are in the Atlantic region, diet quality vary greatly among provinces and are associated with adiposity.

Fruit and vegetable intake and body adiposity among populations in Eastern Canada: the Atlantic Partnership for Tomorrow’s Health Study

Objectives The prevalence of obesity among populations in the Atlantic provinces is the highest in Canada. Some studies suggest that adequate fruit and vegetable consumption may help body weight management. We assessed the associations between fruit and vegetable intake with body adiposity among individuals who participated in the baseline survey of the Atlantic Partnership for Tomorrow’s Health (Atlantic PATH) cohort study. Methods We carried out a cross-sectional analysis among 26 340 individuals (7979 men and 18 361 women) aged 35–69 years who were recruited in the baseline survey of the Atlantic PATH study. Data on fruit and vegetable intake, sociodemographic and behavioural factors, chronic disease, anthropometric measurements and body composition were included in the analysis. Results In the multivariable regression analyses, 1 SD increment of total fruit and vegetable intake was inversely associated with body mass index (−0.12 kg/m2; 95% CI −0.19 to –0.05), waist circumference (−0.40 cm; 95% CI −0.58 to –0.23), percentage fat mass (−0.30%; 95% CI −0.44 to –0.17) and fat mass index (−0.14 kg/m2; 95% CI −0.19 to –0.08). Fruit intake, but not vegetable intake, was consistently inversely associated with anthropometric indices, fat mass, obesity and abdominal obesity. Conclusions Fruit and vegetable consumption was inversely associated with body adiposity among the participant population in Atlantic Canada. This association was primarily attributable to fruit intake. Longitudinal studies and randomised trials are warranted to confirm these observations and investigate the underlying mechanisms.

Multimorbidity in Atlantic Canada and association with low levels of physical activity

Owing to an aging population and medical advances, the anticipated growth and prevalence of multimorbidity has been recognized as a significant challenge and priority in health care settings. Although physical activity has been shown to play a vital role in the primary and secondary prevention of chronic disease, much less is known about the relationship between physical activity and multimorbidity. The objective of the present study was to examine the relationship between physical activity levels and multimorbidity in male and female adults after adjusting for key demographic, geographical, and lifestyle factors. The study drew data from a prospective cohort in Atlantic Canada (2009-2015). The sample included 18,709 participants between the ages of 35-69. Eighteen chronic diseases were identified. Physical activity levels were estimated based on the long form of the International Physical Activity Questionnaire. Using logistic regression analysis, we found that multimorbid individuals were significantly more likely to be physically inactive (OR=1.26; 95% CI 1.10, 1.44) after adjusting for key sociodemographic and lifestyle characteristics. Additional stratified analyses suggest that the magnitude of the effect between multimorbidity and physical activity was stronger for men (OR=1.41; 95% CI 1.12, 1.79) than women (OR=1.18; CI 1.00, 1.39) and those living in rural (OR=1.43; CI 1.10, 1.85) versus urban (OR=1.20; CI 1.02, 141) areas. Given the generally low levels of physical activity across populations and a growing prevalence of multimorbidity, there is a need for a prospective study to explore causal associations between physical activity, multimorbidity, and health outcomes.

Impact of yoga on quality of life for young adult noncurative cancer patients: A pilot study.

249 Background: A growing body of evidence is emerging to suggest that the practice of yoga can improve disease and treatment-related side effects in the non-curative cancer patient by addressing their physical, psychological, and spiritual needs. Regrettably, the literature regarding the positive benefits of yoga for the young adult (YA) non-curative cancer patient is limited. Accordingly, the purpose of this ongoing exploratory study is to examine the feasibility and safety of a 7-week home/hospice based instructive Hatha yoga intervention (Yoga Thrive - available on DVD) in non-curative, YA cancer patients. Secondary outcomes include the examination of the efficacy of yoga in mitigating cancer and treatment-related side effects through ratings of self-reported quality of life (QOL). METHODS A single-arm, non-randomized, pre and post-test, pilot investigation of a 7-week instructive home/hospice-based Hatha yoga program is currently ongoing. Pre/post program data include measures of QOL, specific to palliative disease and spiritual domains as well as open-ended measures of perceived program value. Feasibility data (e.g., recruitment, adherence, safety) are also collected. RESULTS To date, four YA non-curative cancer patients have participated in the 7-week yoga program. Preliminary data show a significant difference in both functional well-being (p= .047, ηp2= 0.78) and spirituality (FACIT-Sp) scores (p= 0.04, ηp2= 0.77). Although not statistically significant, a large effect in physical well-being (ηp2= 0.38); general cancer outcomes (FACT-G) (ηp2= 0.42); and palliative specific scores (ηp2= 0.62) have also emerged. Early responses to the post-program exit questions suggest that participants find the program as an opportunity for self-care, separate from traditional cancer therapies. Subjective improvements in flexibility and mindfulness (e.g., body awareness, relaxation, and calmness) have also been reported. Additionally, participants have complemented the program for its ease and flexibility of use. CONCLUSIONS Early findings of this study provide support for the feasibility and efficacy of a home/hospice-based yoga program for YA non-curative cancer patients.

Aerobic exercise and cardiopulmonary fitness in childhood cancer survivors treated with a cardiotoxic agent: a meta-analysis

PurposeThe main purpose of this review was to synthesize evidence from existing childhood cancer survivor studies that report the effect of aerobic exercise on cardiopulmonary fitness (a marker of cardiovascular health), in survivors that were currently receiving or had been treated with a cardiotoxic agent.MethodsStudies were identified for this review by searching both electronic databases of peer-reviewed articles, as well as various sources of gray literature. Risk of bias was qualitatively assessed in these studies using the domains outlined in the Cochrane Handbook for Systematic Reviews of Interventions. Data was analyzed quantitatively using random-effects meta-analyses and subgroup analyses in RevMan Software.ResultsMeta-analysis of pooled evidence from the nine included studies suggests that aerobic exercise has a statistically and clinically significant positive effect on cardiopulmonary fitness (effect estimate = 6.92%, p value = 0.02). Findings from subgroup analyses of clinical characteristics and exercise parameters were not significant.ConclusionsThe findings from this review, although not directly demonstrating a cardioprotective effect, are a preliminary step towards establishing the putative cardioprotective effect of aerobic exercise against the direct cardiotoxic impact of cancer treatments. The significant positive effect estimate in favor of aerobic exercise is a small but important advancement towards the standardization of aerobic exercise in childhood cancer survivors. Further studies are necessary.