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Volume 34 (2024): Issue 6 (Nov 2024)
24-Hour Movement Behaviors of LGBTQA+ Young People: A Systematic Review
Kathryn Fortnum, Sjaan R. Gomersall, Megan H. Ross, James Woodforde, George Thomas, Yu-Shu Wen, Francisco Perales, and Michalis Stylianou
Background: The movement behaviors of LGBTQA+ young people, who encounter specific health, and other, challenges are not well understood. This systematic review examines the 24-hour movement behaviors of LGBTQA+ young people compared with population estimates of meeting the 24-hour movement guidelines. Methods: Seven electronic databases were searched from inception to January 2024. Observational studies published in English and reporting quantitative data for physical activity, sedentary behavior, or sleep duration for LGBTQA+ individuals <24 years old were included. Data were narratively synthesized for children/adolescents (<18 years) and young adults (18–24 years), guided by the Cochrane Synthesis Without Meta-analysis guidelines. Results: Fifty-six studies were included; 46 were of “fair” quality and 37 were conducted in the United States. Physical activity, sedentary behavior, and sleep outcomes were reported in 46, 11, and 14 studies, respectively. Ninety unique LGBTQA+ terms were identified. Based on outcomes reported in ≥1 study, and compared to population estimates, LGBTQA+ young people were less likely to meet aerobic physical activity and strength/resistance training guidelines. LGBTQA+ children/adolescents were less likely to meet the sleep guidelines. Young adults demonstrated similar adherence to sleep guidelines as population estimates. Conclusions: Overall, our results suggest that LGBTQA+ young people have suboptimal 24-hour movement behaviors; in some cases, worse than population estimates. Utilization of more robust measures of exposure and outcome variables is recommended, with a focus on sleep and sedentary behavior.
Impact of Generalized Versus Individualized Load–Velocity Equations on Velocity-Loss Magnitude in Bench-Press Exercise: Mixed-Model and Equivalence Analysis
Miguel Sánchez-Moreno, Beatriz Bachero-Mena, Juan Sánchez-Valdepeñas, Fabio Yuzo Nakamura, and Fernando Pareja-Blanco
Purpose: This study analyzed the influence of 2 velocity-based training-load prescription strategies (general vs individual load–velocity equations) on the relationship between the magnitude of velocity loss (VL) and the percentage of repetitions completed in the bench-press exercise. Methods: Thirty-five subjects completed 6 sessions consisting of performing the maximum number of repetitions to failure against their 40%, 60%, and 80% of 1-repetition maximum (1RM) in the Smith machine bench-press exercise using generalized and individualized equations to adjust the training load. Results: A close relationship and acceptable error were observed between percentage of repetitions completed and the percentage of VL reached for the 3 loading magnitudes and the 2 load-prescription strategies studied (R 2 from .83 to .94; standard error of the estimate from 7% to 10%). A simple main effect was observed for load and VL thresholds but not for load-prescription strategies. No significant interaction effects were revealed. The 40% and 60% 1RM showed equivalence on data sets and the most regular variation, whereas the 80% 1-repetition maximum load showed no equivalence and more irregular variation. Conclusion: These results suggest that VL is a useful variable to predict percentage of repetitions completed in the bench-press exercise, regardless of the strategy selected to adjust the relative load. However, caution should be taken when using heavy loads.
Understanding the Relationships Between Physical Activity and Climate Change: An Umbrella Review
Milena Franco Silva, Ana Luiza Favarão Leão, Áine O’Connor, Pedro C Hallal, Ding Ding, Erica Hinckson, Tarik Benmarhnia, and Rodrigo Siqueira Reis
Background: Physical activity is crucial for maintaining health and preventing chronic diseases. However, climate conditions can impact physical activity patterns, and conversely, physical activity can impact climate change. This umbrella review aims to summarize the existing evidence regarding the relationships between physical activity and climate change, as revealed in previous reviews. Methods: Systematic reviews and meta-analyses were analyzed. Searches were conducted across GreenFILE, PubMed, and Web of Science databases for peer-reviewed articles published in English. A 2-stage independent screening process was conducted, and methodological quality was assessed using the JBI framework. Standardized data extraction methods were then applied. Results: Out of 1292 articles retrieved, 7 met all eligibility criteria and were included in the review. Three articles examined physical activity as a primary exposure, 3 focused on the impacts of climate change, and one considered both physical activity and climate change as primary exposures. Conclusions: Findings reveal an interplay between climate change and physical activity. While rising temperatures may prompt outdoor activities up to a certain temperature threshold, air pollution and extreme heat can have harmful effects. Active transportation and improved logistics around large-scale sporting events can mitigate climate change by reducing greenhouse gas emissions, but transportation systems linked to sports venues may increase emissions. Research on the reciprocal relationship between climate change and physical activity domains, and integrating the community into climate discussions, is crucial for equity, especially for marginalized communities. Incorporating climate adaptation and mitigation strategies in physical activity infrastructure to minimize environmental impacts is critical.
The Benefits of Acute Aerobic Exercise on Preadolescent Children’s Learning in a Virtual Classroom
Lauren B. Raine, Rachel J. Hopman-Droste, Abigail N. Padilla, Arthur F. Kramer, and Charles H. Hillman
Purpose: Today’s children are increasingly inactive, with >50% not meeting the recommended 60 minutes of daily physical activity (PA). Recent reports suggest scores in reading and mathematics have also declined. Virtual reality (VR) is a technology that can be used to simulate real-world scenarios, like classroom learning. This study investigated whether a single dose of walking benefits learning in a VR classroom (measured via quiz performance). Method: Forty-seven children (15 females, 9.64 [0.12] y) completed 2, randomized and counterbalanced 20-minute interventions on separate days: acute PA (walking) and seated rest (control), followed by a stationary educational lesson in a distracting VR classroom. Children then completed a quiz on the lesson. Results: Children had higher quiz performance following PA (z-score = 0.16 [0.13]) compared with following rest (z-score = −0.18 (0.14); F 1,45 = 6.17, P = .017), indicating that PA enhanced learning. Children with average intelligence quotient had quiz performance that was higher after PA (z-score = 0.04 [0.20]) compared with after rest (z-score = −0.60 [0.19]), t(22) = 3.34, P = .003. Higher intelligence quotient children did not demonstrate differences in quiz performance after PA compared with after rest. Conclusions: Learning in a VR classroom may be improved following acute PA, particularly for children with average intelligence quotient. These findings support public health guidelines promoting PA across the day.
Comparison of Exercise Protocols for Diagnosing Pediatric Unexplained Dyspnea on Exertion
Elliott Brown, Karla Foster, Iesha Gover, Adam Powell, and William D. Hardie
Purpose: Clinicians evaluating pediatric patients with unexplained dyspnea on exertion (DOE) often obtain exercise testing with a treadmill-based exercise-induced bronchospasm (EIB) protocol measuring only changes in spirometry. We modified the EIB protocol to collect metabolic and lung volume endpoints as obtained in a cardiopulmonary exercise test (CPET). We tested the hypothesis that measuring metabolic data with the EIB protocol (EIB-CPET) would yield greater diagnostic information than the EIB protocol. Methods: Exercise test diagnosis for healthy children with DOE referred to the pulmonary exercise lab from January 2011 through July 2023 were retrospectively compared between those performing either the EIB or EIB-CPET protocols. Results: One hundred and twenty-seven patients with unexplained DOE were analyzed. Of the 72 patients tested on the EIB protocol, 49% had stridor and 5% with EIB. Of the 55 patients tested on the EIB-CPET protocol, 42% had stridor, 42% with normal physiologic limitation, 22% with dysfunctional breathing, 5% with deconditioning, 2% with EIB, and 2% with exercise-induced hypoxemia. Patients performing the EIB-CPET protocol had a significantly higher rate of any diagnosis compared with EIB (P = .0002). Conclusions: There is a greater diagnostic yield in children with unexplained DOE performing the EIB-CPET protocol compared with patients performing the EIB protocol.
Erratum. Are the Relationships of Physical Activity and Television Viewing Time With Mortality Robust to Confounding? A Study, Utilizing E-Values, From the Melbourne Collaborative Cohort Study
Journal of Physical Activity and Health
Erratum. Effect of Menstrual Cycle Phase and Hormonal Contraceptives on Resting Metabolic Rate and Body Composition
International Journal of Sport Nutrition and Exercise Metabolism
Navigating Physical Activity Promotion and Policy in the Post-COVID-19-Pandemic Era
Justin Richards, Katja Siefken, Michael Pratt, Adrian Bauman, Juliana Mejía-Grueso, Catherine B. Woods, Wanda Wendel-Vos, Erica Hinckson, Deborah Salvo, Pedro C. Hallal, and Andrea Ramírez Varela
Background: There is limited evidence on the priorities and opportunities associated with promoting population physical activity (PA) participation for the post-COVID-19-pandemic future. Purpose: This study assessed government-led PA promotion efforts before and during the COVID-19 pandemic, along with post-COVID-19-pandemic priorities and recommendations. Methods: Two separate cross-sectional surveys conducted in 2023. Survey 1 was targeted at the Global Observatory for Physical Activity (GoPA!) Country Contacts. Survey 2 also included key international informants representing influential stakeholders in PA policy implementation. Results: There were 68 respondents to Survey 1, collectively representing 61 countries. An additional 37 people, including representatives from 14 key international stakeholders responded to Survey 2. Eighty-two percent of countries had national PA policies. COVID-19 widely disrupted PA policy implementation. Less than 40% of countries integrated PA into their COVID-19 response plan and more than 75% reported policies that restricted PA participation. Although most respondents indicated that government PA priorities did not change due to the COVID-19 pandemic, one in five countries reported that cross-sectoral partnership had become more important during this period. Less than a third of postpandemic governments reported as highly engaged despite the widespread proliferation of PA policies and plans prior to the pandemic. There were variations according to country, region, and income. Conclusions: Elevating PA promotion on the public health agenda is crucial for the post-COVID-19-pandemic era. At a policy level, it is critical to focus on adequate resourcing, cross-sectoral partnerships, integrated interventions, and inequities in participation. These factors have become increasingly important in the postpandemic PA policy landscape.
Striving for Global Consensus: A Systematic Review of Social Return on Investment Applied to Physical Activity and Sport
Inés Nieto, Xián Mayo, Larissa Davies, Lindsey Reece, Ben Strafford, and Alfonso Jimenez
Background: Physical activity and sport (PAS) have been related to health and social benefits, but their monetary value remains unclear. This systematic review on the social return on investment of PAS aimed to find what are the social outcomes measured in previous PAS literature and how are these measured and valued. Methods: A systematic search was conducted on WoS, PubMed, and EconLit. Articles in English, measuring the social value of any type of PAS in monetary terms and utilizing a social return on investment framework, were included. Risk of bias was evaluated using the Drummond checklist. The Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines were followed. Results: Fifty-five documents (2010–2022), from all continents except America, were included; only 8 were published in peer-reviewed journals, whereas 47 were reports. Most studies evaluated the benefits of specific programs, and 6 measured the engagement in PAS at the population level based on national or community surveys. The social outcomes identified were health (94.5%), crime (50.9%), education (83.6%), subjective well-being (89.1%), social capital (60%), and other (3.6%–23.6%). The valuation methods included willingness to pay, well-being valuation, the cost of an activity that could result in the same outcome, and cost databases associating outcomes with a monetary value. Conclusions: This study updates a previous review and widens the scope by answering the question of how social outcomes are measured and valued in previous PAS literature. Given the heterogeneity found in the application of the method, this review will inform a Delphi study to reach a Global Consensus Statement on the measurement of social value and PAS.