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Gavin McCormack and Billie Giles-Corti


The influence of participating in vigorous-intensity physical activity and associated compensatory declines in other types of physical activity in the general population has not been studied well; hence, it is unknown if participation in recommended levels of vigorous-intensity physical activity influence the likelihood of participating in recommended levels of moderate-intensity physical activity.


Face-to-face interviews were conducted on healthy adults (n = 1803), 18 to 59 years of age, recruited from the top and lower quintiles of socioeconomic status within Perth, Western Australia. Data on television watching, vigorous-intensity activity, moderate-intensity activity, and walking for recreation and transport were used in the analysis. Logistic regression was used to determine whether participation in recommended levels of vigorous-intensity activity predicted participation in recommended levels of other types of physical activity and television watching.


After controlling for age, gender, education, and social advantage, participating in recommended levels of vigorous-intensity physical activity (≥90 min/week) was not found to be associated with walking for transport (≥150 min/week) but was found to be significantly associated (OR = 1.38, 95%CI = 1.04–1.82) with recommended levels of recreational walking (≥150 min/week). Participation in recommended levels of vigorous-intensity physical activity was associated with a reduced likelihood of watching television more than 10 hours per/week (OR = 0.71, 95%CI = 0.57–0.89).


In those who participate in recommended levels of vigorous-intensity physical activity, there appears to be no compensatory response in other moderate-intensity activities. Given the added health benefits associated with vigorous-intensity activity, concurrent promotion of moderate and vigorous-intensity physical activity guidelines is warranted, with no evidence that participation in vigorous-intensity activity will negatively influence participation in recommended levels of moderate-intensity activity.

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Francine Darroch, Audrey R. Giles and Roisin McGettigan-Dumas

More elite female distance runners are opting to have children during their athletic careers. Despite this, there is a dearth of information regarding pregnancy and physical activity for elite level athletes. Further, current pregnancy physical activity guidelines are not relevant for this population`s needs. Two research questions frame this study: are elite female distance runners’ pregnancy informational needs being met?; where do they seek and find trustworthy advice on physical activity during pregnancy? Open-ended, semistructured interviews were conducted with 14 women who experienced at least one pregnancy within the past five years, had achieved a minimum of the USA Track and Field 2012 Olympic Team marathon trials ‘B’ entry standard or equivalent performances for distance running events 1,500m or longer. The participants had between one—three children, hail from five countries and participated in 14 Olympic Games and 72 World Championships. Utilizing poststructuralist feminist theory and thematic analysis, our findings revealed that the participants received advice from three main sources, both in person and online: medical professionals, coaches, and other elite female distance runners. However, we found that they also received unsolicited advice and comments from community members where they lived. The participants identified fellow elite female distance runners as the most reliable and trustworthy sources of information, followed by medical professionals, then coaches. Ultimately, the women revealed a lack of formal sources they could turn to for trustworthy advice about how to have a safe and healthy pregnancy while continuing to train at a high intensity. These results illuminate the need to meet female elite athletes’ informational needs in terms of well-being during pregnancy.

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Melanie Vetter, Helen O’Connor, Nicholas O’Dwyer and Rhonda Orr

Background: Physically active learning that combines physical activity with core curriculum areas is emerging in school-based health interventions. This study investigates the effectiveness of learning an important numeracy skill of times tables (TT) while concurrently engaging in aerobic activity compared with a seated classroom approach. Methods: Grade-4 primary school students were randomly allocated to physical activity (P) or classroom (C) groups and received the alternate condition in the following term. P group received moderate to vigorous exercise (20 min, 3 times per week, 6 wk) while simultaneously learning selected TT. C group received similar learning, but seated. Changes in TT accuracy, general numeracy, aerobic fitness, and body mass index were assessed. Data were expressed as mean (SEM) and between-condition effect size (ES; 95% confidence interval). Results: Participants [N = 85; 55% male, 9.8 (0.3) y, 36.4% overweight/obese] improved similarly on TT in both conditions [C group: 2.2% (1.1%); P group: 2.5% (1.3%); ES = 0.03; −0.30 to 0.36; P = .86]. Improvement in general numeracy was significantly greater for P group than C group [C group: 0.7% (1.2%); P group: 5.3% (1.4%); ES = 0.42; 0.08 to 0.75; P < .03]. An improvement in aerobic fitness for P group (P < .01) was not significantly greater than C group [C group: 0.8 (0.6); P group: 2.2 (0.5) mL·kg·min−1; ES = 0.32; −0.01 to 0.66; P = .06]. Body mass index was unchanged. Conclusion: Combined movement with learning TT was effective. Physically active learning paradigms may contribute to meeting daily physical activity guidelines while supporting or even boosting learning.

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Kenneth E. Powell and Steven N. Blair

experts, the 2018 Physical Activity Guidelines Advisory Committee, to review the expanding knowledge base about the relationship between physical activity and health and to prepare a report that could be used to update the 2008 Physical Activity Guidelines for Americans ( HHS, 2008 ). The 2018 Physical

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Mark S. Tremblay

Guidelines Report. 16 More recently, this deficit has been addressed and transformed. In November 2018, the US Department of Health and Human Services released the Physical Activity Guidelines for Americans, second edition, 17 and for the first time, the guidelines included guidance for preschool

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Hayley Guiney, Michael Keall and Liana Machado

bouts of physical activity lasting at least 10 min in the last 7 days), while 51% met the New Zealand physical activity guidelines ( Mummery, Kolt, Schofield, & McLean, 2007 ). After including sex, age, education, income, living location, marital status, smoking status, overweight status, and fruit and

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Tamara Vehige Calise, William DeJong, Timothy Heren, Chloe Wingerter and Harold W. Kohl III

identified as a low-cost, aerobic physical activity that people of all ages can perform. 5 Walkers are more likely to meet or exceed physical activity guidelines. 6 Numerous studies looking at the impact of walking have found a reduced risk of cardiovascular disease, weight loss, 7 and blood pressure

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Debra J. Rose

Academy’s representative on the Physical Activity Guidelines (PAG) Scientific Advisory Committee, began by discussing the changing landscape of physical activity measurement and the diagnostic and motivational benefits of activity trackers and other wearable medical devices for documenting different

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Patty Freedson

was a member of the 2008 Physical Activity Guidelines Advisory Committee that provided the scientific basis for the 2008 federal physical activity guidelines. In our review of the scientific data, it was clear that physical activity has many health benefits. However, many details of the relationship

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Chiaki Tanaka, Shigeho Tanaka, Shigeru Inoue, Motohiko Miyachi, Koya Suzuki, Takafumi Abe and John J. Reilly

are also strategies and policies in place like the Sport Basic Plan and Health Japan 21 (second term). Physical activity guidelines exist for preschool children, adults, and the elderly. However, national physical activity guidelines for children and adolescents (6-17 years) have not been established