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Erratum. Perceived Constraints to Pickleball Participation Among Black Older Adults

Journal of Aging and Physical Activity

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Erratum. Comparison of High-Intensity Training Versus Moderate-Intensity Continuous Training on Cardiorespiratory Fitness and Body Fat Percentage in Persons With Overweight or Obesity: A Systematic Review and Meta-Analysis of Randomized Controlled Trials

Journal of Physical Activity and Health

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Erratum. Pandemic-Related Life Events and Physical Inactivity During COVID-19 Among Israeli Adults: The Smoking and Lifestyles in Israel Study

Journal of Physical Activity and Health

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The Day-Level Association Between Child Care Attendance and 24-Hour Movement Behaviors in Preschool-Aged Children

Hannah Parker, Sarah Burkart, Layton Reesor-Oyer, Lauren von Klinggraeff, Christopher D. Pfledderer, Elizabeth Adams, Robert G. Weaver, Michael W. Beets, and Bridget Armstrong

Background: Twenty-four hour movement behaviors (ie, physical activity [PA], screen time [ST], and sleep) are associated with children’s health outcomes. Identifying day-level contextual factors, such as child care, that positively influence children’s movement behaviors may help identify potential intervention targets, like improving access to child care programs. This study aimed to examine the between- and within-person effects of child care on preschoolers’ 24-hour movement behaviors. Methods: Children (N = 74, 4.7 [0.9] y, 48.9% girls, 63.3% White) wore an Axivity AX3 accelerometer on their nondominant wrist 24 hours per day for 14 days to measure PA and sleep. Parents completed surveys each night about their child’s ST and child care attendance that day. Linear mixed effects models predicted day-level 24-hour movement behaviors from hours spent in child care. Results: Children spent an average of 5.0 (2.9) hours per day in child care. For every additional hour of child care above their average, children had 0.3 hours (95% CI, −0.3 to −0.2) less ST that day. Between-person effects showed that compared with children who attended fewer overall hours of child care, children who attended more hours had less overall ST (B = −0.2 h; 95% CI, −0.4 to 0.0). Child care was not significantly associated with PA or sleep. Conclusions: Child care attendance was not associated with 24-hour PA or sleep; however, it was associated with less ST. More research utilizing objective measures of ST and more robust measures of daily schedules or structure is necessary to better understand how existing infrastructure may influence preschool-aged children’s 24-hour movement behaviors. In addition, future research should consider how access to child care may influence child care attendance.

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When Studying Affective Responses to Exercise, the Definition of “Intensity” Must Reference Homeostatic Perturbations: A Retort to Vollaard et al.

Panteleimon Ekkekakis, Mark E. Hartman, and Matthew A. Ladwig

In articles on the methodology of studies investigating affective and enjoyment responses to high-intensity interval training, we noted that, occasionally, exercise conditions described as involving “high” intensity exhibited heart rates that were only as high as, or even lower than, heart rates recorded during comparator conditions described as being of “moderate” intensity. Drs. Vollaard, Metcalfe, Kinghorn, Jung, and Little suggest instead that exercise intensity in high-intensity interval-training studies can be defined in terms of percentages of peak workload. Although we maintain that defining exercise intensity in terms of percentages of maximal heart rate is a suboptimal way to quantify the degree of homeostatic perturbations in response to exercise, we are unconvinced that definitions of intensity relying solely on workload are appropriate for studies investigating affective and enjoyment responses to exercise. The reason is that affect is theorized to have evolved to relay information about homeostatic perturbations to consciousness.

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Perceived Barriers to Physical Activity Among Youth Living in Rural and Urban Canadian Communities: A Nationally Representative Cross-Sectional Study

Taru Manyanga, Nicole White, Larine Sluggett, Annie Duchesne, David Anekwe, and Chelsea Pelletier

Background: We used nationally representative data to explore associations among location of residence (rural/urban) and perceived barriers to physical activity (PA) in Canadian youth. Methods: We analyzed the 2017 Canadian Community Health Survey, Barriers to Physical Activity Rapid Response data for 12- to 17-year-old youth. Nine items from the survey assessing perceived barriers to PA were combined into 3 barrier domains: resources, motivational, and socioenvironmental. The likelihood of reporting barriers to PA based on rural–urban location was examined using survey-weighted binary logistic regression following a model fitting approach. Sociodemographic factors were modeled as covariates and tested in interaction with location. For each barrier domain, we derived the best-fitting model with fewest terms. Results: There were no location-specific effects related to reporting any barrier or motivation-related PA barriers. We found a sex by location interaction predicting the likelihood of reporting resource-related barriers. Rural boys were less likely to report resource-related barriers compared with urban boys (odds ratio [OR] = 0.42 [0.20, 0.88]). Rural girls were more likely to report resource-related barriers compared with boys (OR = 3.72 [1.66, 8.30]). Regarding socioenvironmental barriers, we observed a significant body mass index by location interaction demonstrating that rural youth with body mass index outside the “normal range” showed a higher likelihood of reporting socioenvironmental barriers compared with urban youth (OR = 2.38 [1.32, 4.30]). For urban youth, body mass index was unrelated to reporting socioenvironmental barriers (OR = 1.07 [0.67, 1.71]). Conclusion: PA barriers are not universal among Canadian youth. Our analyses highlight the importance of testing interactions in similar studies as well as considering key sociodemographic characteristics when designing interventions.

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Percentage of Peak Workload Is Suitable for Quantification of Exercise Intensity During High-Intensity Intervals: A Comment on Ekkekakis, Hartman, and Ladwig

Niels B.J. Vollaard, Richard S. Metcalfe, Daniel Kinghorn, Mary E. Jung, and Jonathan P. Little

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Effects of a 10-Week Integrated Curriculum Intervention on Physical Activity, Resting Blood Pressure, Motor Skills, and Well-Being in 6- to 7-Year-Olds

Michael J. Duncan, Katie Fitton Davies, Nduka Okwose, Amy E. Harwood, and Djordje G. Jakovljevic

Background: Integrated curriculum interventions have been suggested as an effective means to increase physical activity (PA) and health. The feasibility of such approaches in children living in deprivation is unknown. This study sought to pilot an integrated curriculum pedometer intervention in children living in deprivation on school-based PA, body fatness, resting blood pressure, motor skills, and well-being. Methods: Using a pilot cluster randomized intervention design, children (6–7 y old, n = 64) from 2 schools in central England undertook: (1) 10-week integrated curriculum intervention or (2) control (regular school-based activity). School-based PA, body fatness, resting blood pressure, motor skills, and well-being were assessed preintervention and postintervention. Results: For the intervention group, PA was higher on school days when children had physical education lessons or there were physically active integrated curriculum activities. Body fatness significantly decreased, and well-being and perceived physical competence increased, pre–post for the intervention group compared with the control group. Accelerometer-derived PA, motor skills, and resting blood pressure were not significantly different pre–post for intervention or control groups. Conclusions: A 10-week integrated curriculum PA intervention is feasible to conduct and can positively impact aspects of health in 6- to 7-year-old children in England.

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Gender Differences in Physical Activity and Health-Related Authorships Between 1950 and 2019

Eduardo Ribes Kohn, Pedro Curi Hallal, Gloria Isabel Niño-Cruz, Julia Almentero, Diana Pinzón, Maristela Böhlke, Katja Siefken, Michael Pratt, and Andrea Ramirez-Varela

Background: The objective of this study was to investigate gender differences in authorship in physical activity and health research. Methods: A bibliometric study including 23,399 articles from 105 countries was conducted to estimate the participation of female researchers in physical activity publications from 1950 to 2019. The frequency of female researchers was analyzed and classified by first and last authors and the overall percentage of female authors by region and country. Results: The proportion of female first authors increased from <10% in the 50s and 80s to 55% in the last decade. On the other hand, the proportion of last authors increased from 8.7% to 41.1% in the same period. Most publications with female researchers were from the United States, Canada, Australia, Brazil, the Netherlands, Spain, England, Germany, Sweden, and China. Nine of these countries had over 50% of the articles published by female first authors. However, in all 10 countries, <50% of the articles were published by female last authors. Conclusions: The proportion of female researchers increased over time. However, regional differences exist and should be addressed in gender equity policies. There is a gap in the participation of female researchers as last authors. By actively addressing the gender gap in research, the global society can harness the full potential of all talented individuals, regardless of gender, leading to more inclusive and impactful scientific advancements.

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Green Exercise as an Opportunity to Promote Equity in Physical Activity Engagement Across Diverse Populations

Iris Lesser, Cynthia Thomson, and Melissa Lem