Purpose: We aimed to investigate the effects of reallocating sedentary time to an equal amount of light (LPA) or moderate-to-vigorous intensity physical activity (MVPA) on cancer-related fatigue and health-related quality of life (HRQoL) in patients with breast cancer. We also aimed to determine the daily amount of sedentary time needed to be reallocated to LPA or MVPA to produce minimal clinically important changes in these outcomes.
Methods: Pooled baseline data from three studies were used, including women with breast cancer who participated in the Phys-Can project. Fatigue was assessed with the Multidimensional Fatigue Inventory questionnaire (MFI; five dimensions, 4-20 scale) and HRQoL with the European Organisation for Research and Treatment of Cancer quality of life questionnaire (EORTC QLQ-C30; 0-100 scale). Sedentary time and physical activity were measured with accelerometry. Isotemporal substitution modelling was used for the analyses.
Results: Overall, 436 participants (mean age 56 years, fatigue 11 [MFI], HRQoL 66 [EORTC QLQ-C30], LPA 254 min/day, MVPA 71 min/day) were included. Fatigue significantly decreased in two MFI dimensions when reallocating 30 min/day of sedentary time to LPA: reduced motivation and reduced activity (β = - 0.21). Fatigue significantly decreased in three MFI dimensions when reallocating 30 min/day of sedentary time to MVPA: general fatigue (β = - 0.34), physical fatigue (β = - 0.47) and reduced activity (β = - 0.48). To produce minimal clinically important changes in fatigue (- 2 points on MFI), the amount of sedentary time needed to be reallocated to LPA was ≈290 min/day and to MVPA was ≥ 125 min/day. No significant effects were observed on HRQoL when reallocating sedentary time to LPA or MVPA.
Conclusions: Our results suggest that reallocating sedentary time to LPA or MVPA has beneficial effects on cancer-related fatigue in patients with breast cancer, with MVPA having the greatest impact. In relatively healthy and physically active breast cancer populations, a large amount of time reallocation is needed to produce clinically important changes. Future studies are warranted to evaluate such effects in broader cancer populations.
Trial Registration: NCT02473003 (10/10/2014) and NCT04586517 (14/10/2020).
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http://dx.doi.org/10.1007/s00520-023-07614-9 | DOI Listing |
BMC Public Health
January 2025
Centre for Prevention, Lifestyle and Health, National Institute for Public Health and The Environment, Bilthoven, The Netherlands.
Background: A new paradigm of hybrid working exists, with most office workers sharing their work between the office and home office environment. Working from home increases time spent or prolonged sitting, which is associated with an increased risk of chronic disease. Interventions to reduce sitting time, specifically designed for both the office and home-office environments, are required to address this growing public health issue.
View Article and Find Full Text PDFPLoS One
January 2025
Peking University Health Science Center, Macao Polytechnic University Nursing Academy, Macao Polytechnic University, Macao, China.
Objective: The current investigation sought to elucidate the prevalence and contributing factors of sedentary behavior among pregnant women in Macao, a densely populated region characterized by a distinctive fusion of Eastern and Western cultures and a thriving global economy.
Methods: Through a cross-sectional study design, a total of 306 expectant mothers were recruited via various social media platforms and completed a sociodemographic questionnaire alongside the Chinese version of the Pregnancy Physical Activity Questionnaire.
Results: The findings revealed that sedentary activities accounted for a relatively small proportion (7.
J Sports Sci
January 2025
Diabetes Research Centre, University of Leicester, Leicester, UK.
Acute studies have consistently demonstrated small-to-medium glycaemic responses to breaking prolonged sitting, yet it is not known whether acute effects are maintained following a period of intervention or whether behavioural interventions lead to sustained benefits. A single arm, 4-week intervention with pre and post "two-arm" randomised cross-over conditions, study was conducted to investigate whether reducing prolonged sitting in free-living affects acute and chronic glucose and insulin responses. Adults aged 40-75 years living with overweight or obesity with an elevated HbA1c (5.
View Article and Find Full Text PDFFront Pediatr
January 2025
Department of Rehabilitation Science, College of Health Professions, Medical University of South Carolina, Charleston, SC, United States.
Introduction: Pediatric therapists in school-based practice can incorporate exercise promotion through adaptive cycling for children with disabilities who experience high levels of sedentary behavior and low levels of moderate to vigorous activity.
Methods: The impacts of an adaptive cycling pilot program for children with disabilities were investigated through a community-based participatory study. During an eight-week intervention, students had a goal of riding adaptive cycles three times a week for twenty minutes.
J Exerc Sci Fit
January 2025
Shanghai Research Institute of Sports Science (SHRlSS), No. 87, Wuxing Road, Shanghai, 200031, China.
Objectives: This study aimed to investigate the factors associated with physical fitness and disparities in population segments among older adults, using data from the National Physical Fitness Surveilling Survey of China.
Study Design: A cross-sectional study.
Methods: A total of 13524 older adults aged 60-79 years were involved in the study.
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