Associations between Symptoms and Exercise Barriers in Breast Cancer Survivors.

Despite exercise benefits for cancer survivor health, most breast cancer survivors do not meet exercise recommendations. Few studies have examined associations between psychosocial symptoms and exercise barriers in this population. To improve physician exercise counseling by identifying survivors with high barriers in a clinical setting, associations between breast cancer symptoms (fatigue, mood, sleep quality) and exercise barriers were investigated. Physically inactive survivors (N = 320; average age 55 ± 8 years, 81% White, 77% cancer stage I or II) completed a baseline survey for a randomized physical activity trial and secondary analyses were performed. Potential covariates, exercise barriers interference score, Fatigue Symptom Inventory, Hospital Anxiety and Depression Scale (HADS), and Pittsburgh Sleep Quality Index were assessed. Based on multiple linear regression analyses, only HADS Global (B = 0.463, p < 0.001) and number of comorbidities (B = 0.992, p = 0.01) were independently associated with total exercise barriers interference score, explaining 8.8% of the variance (R2 = 0.088, F(2,317) = 15.286, p < 0.001). The most frequent barriers to exercise for survivors above the HADS clinically important cut point included procrastination, routine, and self-discipline. These results indicate greater anxiety levels, depression levels, and comorbidities may be independently associated with specific exercise barriers. Health professionals should consider mood and comorbidities when evaluating survivors for exercise barriers, and tailoring exercise counseling.

Defining Cephalomedullary Nail Breakage Rates: A Systematic Review and Meta-Analysis.

OBJECTIVE: To establish the background rate of breakage of cephalomedullary nails. DATA SOURCES: MEDLINE, PubMed, and Web of Science were searched on April 3, 2023. STUDY SELECTION: All English-language studies that examined trochanteric with or without subtrochanteric fractures and identified cephalomedullary nail breakage as an outcome measure and a breakage rate could be derived were included. Implants captured were predominantly the TFNA, TFN, and PFN by DePuy Synthes, various versions of the Gamma nail by Stryker, the Zimmer Natural Nail by Zimmer Biomet, and the Intertan by Smith and Nephew. DATA EXTRACTION: The author, year of publication, dates of implant insertion, study design, method of detection of breakages, implant used, number of implant breakages, number of implants inserted, breakage rate, and follow-up were extracted. DATA SYNTHESIS: Meta-analysis of included studies used descriptive nonparametric statistics and a noncomparative proportion for the pooled result. Differences in results between study design types were compared using the mean breakage rate per study design. CONCLUSIONS: Cephalomedullary nail breakage is a rare complication with a median reported rate of 0.6% and a pooled result rate of 0.4%. Ninety-five percent of studies had a breakage rate of 1.3% or less, which sets a benchmark from the reported literature for future studies. There is wide variability in rates of breakage reported between different types of study designs with single-center review studies reporting breakage rates nearly 4-fold greater than large-scale administrative database reviews. The rate of implant breakage should not be used in isolation to judge an implant's performance. LEVEL OF EVIDENCE: Therapeutic Level IV. See Instructions for Authors for a complete description of levels of evidence.

Exercise social support, barriers, and instructions in venous thromboembolism survivors: a descriptive study.

Background: Diagnosis of venous thromboembolism (VTE) can be a significant life event that leads to changes in physical activity and exercise. Currently, little is known about the psychosocial experiences of survivors including perceived sources of social support, exercise barriers, and instructions for exercise from medical providers. Objectives: This study aimed to explore psychosocial characteristics associated with VTE survivors' postdiagnosis exercise. Specifically, 1) what are the main sources of social support utilized by VTE survivors for exercise, 2) what are the most significant exercise barriers (eg, physical, social, and psychological) faced by VTE survivors, and 3) what specific information relative to exercise is provided by medical professionals following diagnosis? Methods: VTE survivors (n = 472) were recruited through social media groups to participate in open-ended questions about psychosocial characteristics pertaining to postdiagnosis exercise. Results: VTE survivors reported multiple forms of exercise social support, although almost 1 in 4 participants reported having no support for exercise. Several postdiagnosis exercise barriers were noted, and the data indicated a wide variety of information from their medical providers regarding engaging in exercise following their diagnosis, suggesting that the unique benefits and drawbacks to these instructions should be examined in more detail. Conclusion: Although VTE survivors identified numerous categories of social support, there also exist numerous barriers, including a lack of standardized instructions for exercise. Further exploration of these characteristics is needed to better serve this population to encourage postdiagnosis exercise.

Utility assessment of virtual reality technology in orthopaedic surgical training.

BACKGROUND: Virtual reality (VR) has proved to be a useful technology beyond the field of surgery in areas that are highly dependent on consolidating motor tasks. Despite being reliant on these skills, the uptake of VR in orthopaedics has been extremely limited. Therefore, this study's purpose was to help assess the utility of applying this technology in teaching different experience levels of orthopaedic training. Secondary objectives were to assess enjoyability and feasibility to complete modules prior to surgery. METHODS: The study explored which experience level of orthopaedic trainee benefits the most from the proposed haptic VR package. Participants completed a total hip arthroplasty module using the Fundamental Surgery package. Qualitative data was collected in the form of a post completion survey of 24 participants. Quantitative data was collected in the form of module completion time and percentage of skills completed. RESULTS: 37.5% of participants rated non-training orthopaedic registrars as the experience level that would benefit the most from using VR. 88% of participants would recommend this module to a colleague and found the module very enjoyable (4.2 out of 5). 50% of participants took between 25 and 31.5 min to finish and completed between 80% and 95% of tasks in the module. CONCLUSIONS: The study demonstrated that non-training orthopaedic registrars were most likely to benefit using this particular VR package. Most users found the experience to be enjoyable and would recommend it to a colleague. It was also deemed feasible to complete the module prior to performing an operation.

Breast cancer survivors' exercise preferences change during an exercise intervention are associated with post-intervention physical activity.

PURPOSE: Exercise program preferences are important for designing physical activity (PA) interventions; yet may change following an intervention. Further, the relationship between preferences and PA behavior change is unclear. This study evaluated exercise program preferences among breast cancer survivors (BCS) before and after a behavioral intervention and associations between program preferences and PA change. METHODS: BCS were randomized to the BEAT Cancer intervention (n = 110) or written materials (n = 112). Questionnaires assessed exercise program preferences. Minutes per week of moderate-to-vigorous PA (MVPA) were accelerometer-measured and self-reported at baseline (M0), post-intervention (M3), and 3-month follow-up (M6). RESULTS: At M0, the majority of intervention group participants preferred exercising with others (62%) yet shifted to preferring exercising alone (59%) at M3 (p < 0.001). Furthermore, preferring exercising with others at M0 was associated with greater increases in self-reported MVPA between M0 and M6 (124.2 ± 152 vs. 53.1 ± 113.8, p = 0.014). BCS preferring facility-based exercise decreased after the BEAT Cancer intervention (14% vs. 7%, p = 0.039) and preferring exercising at home/had no preference at M0 had greater improvements in accelerometer-measured MVPA from M0 to M3 (74.3 ± 118.8 vs. -2.3 ± 78.4, p = 0.033) and M0 to M6 (44.9 ± 112.8 vs. 9.3 ± 30.4, p = 0.021). Exercise program preferences regarding mode of counseling, training supervision, and type of exercise changed from M0 to M3 but were not associated with changes in MVPA. CONCLUSION: Findings suggest BCS exercise program preferences may change after an intervention and be associated with changes in MVPA. Understanding the role of PA preferences will better inform the design and success of PA behavior change interventions. ClinicTrials.gov, ClinicalTrials.gov number: NCT00929617.

Relationships between Obesity, Exercise Preferences, and Related Social Cognitive Theory Variables among Breast Cancer Survivors.

Breast cancer survivors with obesity have an increased risk of cancer recurrence, second malignancy, and comorbidities. Though physical activity (PA) interventions are needed, investigation of the relationships between obesity and factors influencing PA program aspects among cancer survivors remain understudied. Thus, we conducted a cross-sectional study examining associations amongst baseline body mass index (BMI), PA program preferences, PA, cardiorespiratory fitness, and related social cognitive theory variables (self-efficacy, exercise barriers interference, social support, positive and negative outcome expectations) from a randomized controlled PA trial with 320 post-treatment breast cancer survivors. BMI was significantly correlated with exercise barriers interference (r = 0.131, p = 0.019). Higher BMI was significantly associated with preference to exercise at a facility (p = 0.038), lower cardiorespiratory fitness (p < 0.001), lower walking self-efficacy (p < 0.001), and higher negative outcome expectations (p = 0.024), independent of covariates (comorbidity score, Western Ontario and McMaster Universities osteoarthritis index score, income, race, education). Those with class I/II obesity reported a higher negative outcome expectations score compared with class III. Location, walking self-efficacy, barriers, negative outcome expectations, and fitness should be considered when designing future PA programs among breast cancer survivors with obesity.

Physical activity intervention benefits persist months post-intervention: randomized trial in breast cancer survivors.

PURPOSE: Determine durable effects of the 3-month Better Exercise Adherence after Treatment for Cancer (BEAT Cancer) physical activity (PA) behavior change intervention 12 months post-baseline (i.e., 9 months after intervention completion). METHODS: This 2-arm multicenter trial randomized 222 post-primary treatment breast cancer survivors to BEAT Cancer (individualized exercise and group education) vs. usual care (written materials). Assessments occurred at baseline, 3, 6, and 12 months, with the 12 months assessment reported here. Measures included PA (accelerometer, self-report), cardiorespiratory fitness, muscle strength, body mass index, Functional Assessment of Cancer Therapy (FACT), SF-36, fatigue, depression, anxiety, satisfaction with life, Pittsburgh Sleep Quality Index (PSQI), lower extremity joint dysfunction, and perceived memory. RESULTS: Adjusted linear mixed-model analyses demonstrated statistically significant month 12 between-group differences favoring BEAT Cancer for weekly minutes of moderate-to-vigorous self-report PA (mean between-group difference (M) = 44; 95% confidence interval (CI) = 12 to 76; p = .001), fitness (M = 1.5 ml/kg/min; CI = 0.4 to 2.6; p = .01), FACT-General (M = 3.5; CI = 0.7 to 6.3; p = .014), FACT-Breast (M = 3.6; CI = 0.1 to 7.1; p = .044), social well-being (M = 1.3; CI = 0.1 to 2.5; p = .037), functional well-being (M = 1.2; CI = 0.2 to 2.3; p = .023), SF-36 vitality (M = 6.1; CI = 1.4 to 10.8; p = .011), fatigue (M = - 0.7; CI = - 1.1 to - 0.2; p = .004), satisfaction with life (M = 1.9; CI = 0.3 to 3.5; p = .019), sleep duration (M = - 0.2; CI = - 0.4 to - 0.03, p = .028), and memory (M = 1.1; CI = 0.2 to 2.1; p = .024). CONCLUSIONS: A 3-month PA intervention resulted in statistically significant and clinically important benefits compared to usual care at 12 months. IMPLICATIONS FOR CANCER SURVIVORS: Three months of individualized and group PA counseling causes benefits detectable 9 months later. TRIAL REGISTRATION: ClinicalTrials.gov NCT00929617 ( https://clinicaltrials.gov/ct2/show/NCT00929617 ; registered June 29, 2009).

Rationale and feasibility assessment of an institution-based virtual reality hub in orthopaedic surgical training: an Australian pilot study.

BACKGROUND: Virtual reality (VR) has been established as a valuable tool outside of medicine but there has been limited uptake in orthopaedics despite being a specialty heavily dependent on psychomotor skills. The purpose of this study was to assess the feasibility of setting up an on-site virtual reality surgical training hub for an orthopaedic surgery unit. A secondary objective was to document encountered hurdles to assist other institutions with a similar process. METHODS: The study explored the logistical and organizational considerations in the process of creating a virtual reality training area. This included: review of location, set up management, funding arrangements, set up time, research opportunities and training time. Set up and completion times were recorded during a separate trial of 24 participants ranging from medical students to senior consultant orthopaedic surgeons. RESULTS: A VR training area was successfully established over a period of 3 months. A dedicated area for training where the equipment remains permanently was designated to facilitate ease of use. Average set up took 7.5 min to turn the computer on and 25 min for the participants to start the module. Issues identified during set up were recorded. CONCLUSIONS: The study demonstrated that it is possible to set up a dedicated area for virtual reality surgical training within a hospital unit. A dedicated lockable area is the most feasible method of establishing such a space and reduces the requirement to recalibrate and transfer equipment around the hospital.

Physical Activity and Sleep Quality in Breast Cancer Survivors: A Randomized Trial.

PURPOSE: Data from large randomized controlled trials confirming sleep quality improvements with aerobic physical activity have heretofore been lacking for post-primary treatment breast cancer survivors. Our primary purpose for this report was to determine the effects of a physical activity behavior change intervention, previously reported to significantly increase physical activity behavior, on sleep quality in post-primary treatment breast cancer survivors. METHODS: Post-primary treatment breast cancer survivors (n = 222) were randomized to a 3-month physical activity behavior change intervention (Better Exercise Adherence after Treatment for Cancer [BEAT Cancer]) or usual care. Self-report (Pittsburgh Sleep Quality Index [PSQI]) and actigraphy (latency and efficiency) sleep outcomes were measured at baseline, 3 months (M3), and 6 months (M6). RESULTS: After adjusting for covariates, BEAT Cancer significantly improved PSQI global sleep quality when compared with usual care at M3 (mean between-group difference [M] = -1.4, 95% confidence interval [CI] = -2.1 to -0.7, P < 0.001) and M6 (M = -1.0, 95% CI = -1.7 to -0.2, P = 0.01). BEAT Cancer improved several PSQI subscales at M3 (sleep quality M = -0.3, 95% CI = -0.4 to -0.1, P = 0.002; sleep disturbances M = -0.2, 95% CI = -0.3 to -0.03, P = 0.016; daytime dysfunction M = -0.2, 95% CI = -0.4 to -0.02, P = 0.027) but not M6. A nonsignificant increase in percent of participants classified as good sleepers occurred. No significant between-group difference was noted for accelerometer latency or efficiency. CONCLUSION: A physical activity intervention significantly reduced perceived global sleep dysfunction at 3 and 6 months, primarily because of improvements in sleep quality aspects not detected with accelerometer.

Effects of a multicomponent physical activity behavior change intervention on fatigue, anxiety, and depressive symptomatology in breast cancer survivors: randomized trial.

OBJECTIVES: To determine the effects of the 3-month multicomponent Better Exercise Adherence after Treatment for Cancer (BEAT Cancer) physical activity behavior change intervention on fatigue, depressive symptomatology, and anxiety. METHODS: Postprimary treatment breast cancer survivors (n = 222) were randomized to BEAT Cancer or usual care. Fatigue Symptom Inventory and Hospital Anxiety and Depression Scale were assessed at baseline, postintervention (month 3; M3), and follow-up (month 6; M6). RESULTS: Adjusted linear mixed-model analyses demonstrated significant effects of BEAT Cancer vs usual care on fatigue intensity (M3 mean between group difference [M] = -0.6; 95% confidence interval [CI] = -1.0 to -0.2; effect size [d] = -0.32; P = .004), fatigue interference (M3 M = -0.8; CI = -1.3 to -0.4; d = -0.40; P < .001), depressive symptomatology (M3 M = -1.3; CI = -2.0 to -0.6; d = -0.38; P < .001), and anxiety (M3 M = -1.3; CI = -2.0 to -0.5; d = -0.33; P < .001). BEAT Cancer effects remained significant at M6 for all outcomes (all P values <.05; d = -0.21 to -.35). Clinically meaningful effects were noted for fatigue intensity, fatigue interference, and depressive symptomatology. CONCLUSIONS: BEAT Cancer reduces fatigue, depressive symptomatology, and anxiety up to 3 months postintervention in postprimary treatment breast cancer survivors. Further study is needed to determine sustainable methods for disseminating and implementing the beneficial intervention components.

Effects of a multicomponent physical activity behavior change intervention on breast cancer survivor health status outcomes in a randomized controlled trial.

Little is known about the effects of physical activity behavior change interventions on health outcomes such as lower extremity dysfunction and SF-36 physical health (predictor of mortality) in breast cancer survivors. Furthermore, effect moderators are rarely reported. Therefore, we report the effects of the 3-month BEAT Cancer physical activity behavior change intervention on global health status and health indicators along with moderators of intervention outcomes. Postprimary treatment breast cancer survivors (n = 222) were randomized to BEAT Cancer or usual care (UC). SF-36, muscle strength, body mass index, lower extremity dysfunction (WOMAC), and life satisfaction were measured at 3 months (M3) and 6 months (M6). At M3, adjusted linear mixed-model analyses demonstrated statistically significant effects of BEAT Cancer versus UC on SF-36 physical health [mean between-group difference (M) = 2.1; 95 % confidence interval (CI) 0.3-3.9; p = 0.023], SF-36 mental health (M = 5.2; CI 2.8-7.6; p < 0.001), and all SF-36 subscores. Intervention benefits occurred for lower extremity physical dysfunction (M = -2.7; CI -5.0 to -0.5; p = 0.018), WOMAC total (M = -3.7; CI -6.7 to -0.6; p = 0.018), and life satisfaction (M = 2.4; CI 0.9-3.9; p = 0.001). Statistically significant effects persisted at M6 for mental health and vitality. Baseline value, income, marital status, cancer treatment, cancer stage, and months since diagnosis moderated one or more outcomes. BEAT Cancer improves SF-36, WOMAC, and life satisfaction outcomes with improvements in vitality and mental well-being continuing 3 months postintervention. Several moderators with potential to guide targeting individuals for optimal intervention benefit warrant further study.

Lower rate-pressure product during submaximal walking: a link to fatigue improvement following a physical activity intervention among breast cancer survivors.

PURPOSE: Research showing a link between exercise-induced changes in aerobic fitness and reduced fatigue after a cancer diagnosis has been inconsistent. We evaluated associations of fatigue and rate-pressure product (RPP), a reliable index of myocardial oxygen demand, at rest and during submaximal walking following a physical activity intervention among post-primary treatment breast cancer survivors (BCS). METHODS: Secondary analyses of 152 BCS in a randomized controlled trial testing a physical activity intervention (INT) versus usual care (UC) were performed. The INT group completed counseling/group discussions along with supervised exercise sessions tapered to unsupervised exercise. Evaluations were made at baseline and immediately post-intervention (M3) on measures of physical activity (accelerometry), graded walk test, and average fatigue over the previous 7 days. RPP was calculated by dividing the product of heart rate and systolic blood pressure by 100. RESULTS: Resting and submaximal RPPs were significantly improved in both groups at M3; however, the magnitude of change (∆) was greater in the INT group from stage 1 (∆RPP1; INT -13 ± 17 vs. UC -7 ± 18; p = 0.03) through stage 4 (∆RPP4; INT -21 ± 26 vs. UC -9 ± 24; p < 0.01) of the walk test. The INT group reported significantly reduced fatigue (INT -0.7 ± 2.0 vs. UC +0.1 ± 2.0; p = 0.02) which was positively associated with ∆RPP during stages 2-4 of the walk test but not ∆aerobic fitness. CONCLUSIONS: Lower RPP during submaximal walking was significantly associated with reduced fatigue in BCS. IMPLICATIONS FOR CANCER SURVIVORS: Exercise/physical activity training programs that lower the physiological strain during submaximal walking may produce the largest improvements in reported fatigue.

Effects of the BEAT Cancer physical activity behavior change intervention on physical activity, aerobic fitness, and quality of life in breast cancer survivors: a multicenter randomized controlled trial.

Most breast cancer survivors (BCS) are not meeting recommended physical activity guidelines. Here, we report the effects of the Better Exercise Adherence after Treatment for Cancer (BEAT Cancer) behavior change intervention on physical activity, aerobic fitness, and quality of life (QoL). We randomized 222 post-primary treatment BCS to the 3-month intervention (BEAT Cancer) or usual care (UC). BEAT Cancer combined supervised exercise, face-to-face counseling, and group discussions with tapering to home-based exercise. Assessments at baseline, immediately post-intervention (month 3; M3), and 3 months post-intervention (month 6; M6) included accelerometer and self-reported physical activity, submaximal treadmill test, and QoL [Functional Assessment of Cancer Therapy (FACT)-Breast scale]. Adjusted linear mixed-model analyses demonstrated significant effects of BEAT Cancer compared to UC on weekly minutes of ≥ moderate intensity physical activity at M3 by accelerometer [mean between group difference (M) = +41; 95 % confidence interval (CI) = 10-73; p = 0.010] and self-report (M = +93; CI = 62-123; p < 0.001). Statistical significance remained at M6 for self-reported physical activity (M = +74; CI = 43-105; p < 0.001). BEAT Cancer participants were significantly more likely to meet physical activity recommendations at both time points [accelerometer M3 adjusted odds ratio (OR) = 2.2; CI = 1.0-4.8 and M6 adjusted OR = 2.4; CI = 1.1-5.3; self-report M3 adjusted OR = 5.2; CI = 2.6-10.4 and M6 adjusted OR = 4.8; CI = 2.3-10.0]. BEAT Cancer significantly improved fitness at M6 (M = +1.8 ml/kg/min; CI = 0.8-2.8; p = 0.001) and QoL at M3 and M6 (M = +6.4; CI = 3.1-9.7; p < 0.001 and M = +3.8; CI = 0.5-7.2; p = 0.025, respectively). The BEAT Cancer intervention significantly improved physical activity, fitness, and QoL with benefits continuing 3 months post-intervention.

Pilot, randomized trial of resistance exercise during radiation therapy for head and neck cancer.

BACKGROUND: The purpose of this study was to determine the feasibility of a randomized trial of resistance exercise in patients with head and neck cancer receiving radiation. METHODS: Fifteen patients with head and neck cancer receiving radiation were randomized to resistance exercise (using resistance bands) or control group. Resistance exercise occurred at the radiation therapy site (weeks 1-6) and home (weeks 7-12). RESULTS: No serious adverse events occurred related to resistance exercise. Medium to large effect size differences favoring resistance exercise versus control group were noted for perceived fatigue at 6 weeks (smaller increase in fatigue for resistance exercise group; 7.4 vs 15.4, effect size [d] = -0.64), quality of life at 6 weeks (-7.0 vs -14.4, d = 0.52), and chair rise time (seconds) at 6 and 12 weeks (-1.6 vs 0.4, d = -.63 and -1.9 vs 0.1, d = -0.60, respectively). CONCLUSIONS: Resistance exercise is safe and feasible in patients with head and neck cancer receiving radiation; a definitive trial is warranted.

Cancer caregivers' perceptions of an exercise and nutrition program.

PURPOSE: Little research has addressed exercise and nutrition-based interventions for cancer caregivers. This study explored cancer caregivers' perceptions of participating in a structured exercise and nutrition program alongside cancer survivors for whom they provided care. METHODS: In-depth, semi-structured interviews were conducted by one interviewer with 12 cancer caregivers about their experiences participating in a structured, 12-week exercise and nutrition program designed for cancer survivors and caregivers to complete concurrently. Interviews were conducted until data saturation was reached. RESULTS: Inductive content analysis from individual interviews indicated three separate, but interrelated, themes: (1) the program was a positive mechanism through which caregivers shared and supported the cancer journey concurrently with survivors, (2) the program led to perceived physical and psychological benefits for both caregivers and survivors, and (3) participants perceived that participation in the program led to feeling increased social support in their caregiving duties. CONCLUSIONS: Findings from this study suggest that participating in an exercise- and nutrition-based intervention is viewed positively by caregivers and that the outcomes are seen as beneficial to both caregivers and survivors. Interventions that address the health needs of both members of the caregiver-survivor dyad should continue to be encouraged by allied health professionals.

Instructing skilled athletes to focus their attention externally at greater distances enhances jumping performance.

Numerous studies have demonstrated that using verbal instructions to direct a performers' attention externally significantly enhances motor skill performance. Limited research has also demonstrated that increasing the distance of an external focus relative to the body magnifies the effect of an external focus of attention. The purpose of this study was to investigate the effect of increasing the distance of an external focus of attention on standing long jump performance in a highly trained population. Using a counterbalanced, within-participant design, current collegiate male athletes (n = 38, age = 20.7 years, SD = 2.2 years) performed 2 standing long jumps following 4 different sets of verbal instructions. Subjects completed all 8 trials in 1 testing session, which lasted approximately 20 minutes. One set of instructions was designed to focus attention internally toward the movements of the body (INT), a second set of instructions focused attention externally near the body (EXN), another set of instructions directed attention externally to a target farther from the body (EXF), and the last set of instructions served as a control condition (CON) and encouraged the athlete to use his "normal" focus while jumping. Results indicated that the EXN and EXF conditions elicited jump distances that were significantly greater than the INT and CON conditions. In addition, the participants jumped significantly farther in the EXF condition than the EXN condition. These findings suggest that increasing the distance of an external focus of attention relative to the body, immediately improved standing long jump performance in a highly trained population.

Better exercise adherence after treatment for cancer (BEAT Cancer) study: rationale, design, and methods.

Most breast cancer survivors do not engage in regular physical activity. Our physical activity behavior change intervention for breast cancer survivors significantly improved physical activity and health outcomes post-intervention during a pilot, feasibility study. Testing in additional sites with a larger sample and longer follow-up is warranted to confirm program effectiveness short and longer term. Importantly, the pilot intervention resulted in changes in physical activity and social cognitive theory constructs, enhancing our potential for testing mechanisms mediating physical activity behavior change. Here, we report the rationale, design, and methods for a two-site, randomized controlled trial comparing the effects of the BEAT Cancer physical activity behavior change intervention to usual care on short and longer term physical activity adherence among breast cancer survivors. Secondary aims include examining social cognitive theory mechanisms of physical activity behavior change and health benefits of the intervention. Study recruitment goal is 256 breast cancer survivors with a history of ductal carcinoma in situ or Stage I, II, or IIIA disease who have completed primary cancer treatment. Outcome measures are obtained at baseline, 3 months (i.e., immediately post-intervention), 6 months, and 12 months and include physical activity, psychosocial factors, fatigue, sleep quality, lower extremity joint dysfunction, cardiorespiratory fitness, muscle strength, and waist-to-hip ratio. Confirming behavior change effectiveness, health effects, and underlying mechanisms of physical activity behavior change interventions will facilitate translation to community settings for improving the health and well-being of breast cancer survivors.

Increasing the distance of an external focus of attention enhances standing long jump performance.

Numerous studies have demonstrated that using verbal instructions to direct a performers attention externally (i.e., toward the effect of the movement) significantly enhances motor skill performance. Limited research has also demonstrated that increasing the distance of an external focus relative to the body magnifies the effect of an external focus of attention. The purpose of this study was to investigate the effect of increasing the distance of an external focus of attention on standing long jump performance. Using a counterbalanced within-participant design, recreationally trained male subjects (n = 35) performed 2 standing long jumps following 3 different sets of verbal instructions (total of 6 jumps; each separated by 1 minute of seated rest). One set of instructions was designed to focus attention externally near the body (EXN); another set of instructions directed attention externally to a target farther from the body (EXF); the last set of instructions served as a control condition (CON) and did not encourage a specific focus of attention. The results indicated that the EXN and EXF conditions elicited jump distances that were significantly greater than the CON condition. In addition, the subjects in the EXF condition jumped significantly farther than those in the EXN condition. These findings suggest that increasing the distance of an external focus of attention, relative to the body, immediately improves standing long jump performance.