Alannah K.A. McKay, Peter Peeling, David B. Pyne, Nicolin Tee, Marijke Welveart, Ida A. Heikura, Avish P. Sharma, Jamie Whitfield, Megan L. Ross, Rachel P.L. van Swelm, Coby M. Laarakkers, and Louise M. Burke
This study implemented a 2-week high carbohydrate (CHO) diet intended to maximize CHO oxidation rates and examined the iron-regulatory response to a 26-km race walking effort. Twenty international-level, male race walkers were assigned to either a novel high CHO diet (MAX = 10 g/kg body mass CHO daily) inclusive of gut-training strategies, or a moderate CHO control diet (CON = 6 g/kg body mass CHO daily) for a 2-week training period. The athletes completed a 26-km race walking test protocol before and after the dietary intervention. Venous blood samples were collected pre-, post-, and 3 hr postexercise and measured for serum ferritin, interleukin-6, and hepcidin-25 concentrations. Similar decreases in serum ferritin (17–23%) occurred postintervention in MAX and CON. At the baseline, CON had a greater postexercise increase in interleukin-6 levels after 26 km of walking (20.1-fold, 95% CI [9.2, 35.7]) compared with MAX (10.2-fold, 95% CI [3.7, 18.7]). A similar finding was evident for hepcidin levels 3 hr postexercise (CON = 10.8-fold, 95% CI [4.8, 21.2]; MAX = 8.8-fold, 95% CI [3.9, 16.4]). Postintervention, there were no substantial differences in the interleukin-6 response (CON = 13.6-fold, 95% CI [9.2, 20.5]; MAX = 11.2-fold, 95% CI [6.5, 21.3]) or hepcidin levels (CON = 7.1-fold, 95% CI [2.1, 15.4]; MAX = 6.3-fold, 95% CI [1.8, 14.6]) between the dietary groups. Higher resting serum ferritin (p = .004) and hotter trial ambient temperatures (p = .014) were associated with greater hepcidin levels 3 hr postexercise. Very high CHO diets employed by endurance athletes to increase CHO oxidation have little impact on iron regulation in elite athletes. It appears that variations in serum ferritin concentration and ambient temperature, rather than dietary CHO, are associated with increased hepcidin concentrations 3 hr postexercise.
Nikolaus A. Dean, Andrea Bundon, P. David Howe, and Natalie Abele
Although women have been a part of the Paralympic Movement since its inauguration, they remain underrepresented in almost all aspects of parasport. Noting these gender-based discrepancies, the International Paralympic Committee and several National Paralympic Committees have made commitments to address the issue of gender balance across the movement. Guided theoretically by feminist and disability sport scholarship, this article explores the various initiatives and strategies implemented by the International Paralympic Committee and National Paralympic Committees to address the issue of gender parity. Through 29 qualitative interviews with Paralympic athletes, organizers, academics, and journalists, our study illustrates that initiatives and strategies implemented by these organizations have affected women differently based on a range of social, cultural, and political factors.
David J. Shonk
Bridget C. Foley, Mathew McLaughlin, Sarah Edney, Sheikh Mohammed Shariful Islam, Jessica Seymour, Louisa R. Peralta, Angela Douglas, Simon Rosenbaum, Holly Thorpe, Janice Atkin, Tim Olds, and Ding Ding
The Australasian Society for Physical Activity aims to advance the science and practice of physical activity in Australia, New Zealand, the Pacific Islands, East Asia, South Asia, Southeast Asia, and Oceania. Fun, enjoyment, and cross-disciplinary discourse are important to ensure the network of physical activity professionals and our collective voice continues to grow. In May 2021, Australasian Society for Physical Activity’s Early Career Network curated an engaging online Physical Activity Debate attended by 206 professionals. This commentary provides a synopsis of the debate and the central arguments presented by the affirmative and negatives teams. The authors describe the debate format and interactive design of the online Physical Activity Debate to provide insights for future online events that aim to boost interaction among physical activity professionals from various disciplines.
Malorie Polster, Erin E. Dooley, Kate Olscamp, Katrina L. Piercy, and April Oh
Background: Dissemination of the Physical Activity Guidelines for Americans (Guidelines) is needed, but how individuals respond to the Guidelines is not well understood. This surveillance study describes US adults’ reported responses to and information sources for hearing about the Guidelines and explores relationships between how respondents heard about the Guidelines and their reported response(s). Methods: Data were analyzed from the population-based 2019 Health Information National Trends Survey 5 Cycle 3. Population-weighted proportions of response were calculated. Among those who had heard about the Guidelines, binary logistic regressions examined associations between the reported response(s) and the information source and number of sources reported. Results: The analytical sample included 5047 adults. Nearly 65% of US adults reported hearing about the Guidelines, and 29% reported a behavioral response (eg, increased physical activity). Hearing about the Guidelines through health professionals (adjusted odds ratio = 2.30, 95% confidence interval, 1.45–3.65) or social media (adjusted odds ratio = 1.89, 95% confidence interval, 1.20–2.96) (vs other sources) was associated with reporting increasing physical activity. Hearing from multiple sources (vs one source) was associated with reporting increasing physical activity (adjusted odds ratio = 1.97, 95% confidence interval, 1.18–3.31). Conclusion: Findings suggest dissemination of the Guidelines across multiple channels may promote greater changes in physical activity.
Christoph Breuer, Svenja Feiler, and Lea Rossi
Coaches play a vital role in providing sports programs. Investing in formal coach education can serve to increase coaches’ human capital, which in turn, has a positive effect on their coaching practice. The present study investigates factors influencing coaches’ intention to get training for their coaching activity on an individual and organizational level. Nationwide online surveys were conducted in Germany on both nonprofit sports clubs and coaches being active within these clubs. Data were analyzed using multilevel regression analysis on a sample of n = 2,384 coaches in n = 1,274 clubs. Results show that especially the expiring validity of the coaching license, aspects of personal development, and low transaction costs are crucial factors for the intention to obtain a qualification. The results lead to several implications for theory and practice. Clubs could enhance the qualification intention and, thereby, the quality of sports programs by appointing a contact person who informs about qualification possibilities.