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Karin A. Pfeiffer, Kathleen B. Watson, Robert G. McMurray, David R. Bassett, Nancy F. Butte, Scott E. Crouter, Stephen D. Herrmann, Stewart G. Trost, Barbara E. Ainsworth, Janet E. Fulton, David Berrigan and For the CDC/NCI/NCCOR Research Group

MET values for youth, but was limited because about two-thirds of the values were actually adult-based and only 1 MET value was provided for all age groups ( 12 ). To update the Youth Compendium with youth-based values, a method is needed that expresses the energy cost of physical activities and

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International Olympic Committee Expert Group on Dietary Supplements in Athletes

awareness of the potential for harm must be paramount. Therefore, expert professional help should be sought before a consensual decision on supplement use is made. Lausanne, Switzerland, 5 May 2017 Endnote This Expert Group Statement presents the conclusions of the International Olympic Committee (IOC

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Desmond McEwan, Bruno D. Zumbo, Mark A. Eys and Mark R. Beauchamp

used to study teamwork behaviors in a range of group settings (e.g., health care, business, military) and, as such, can be considered a “meta-framework” of teamwork. Twelve of the dimensions within McEwan and Beauchamp’s ( 2014 ) framework focus on behaviors associated with team task performance (i

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Leslie A. Pruitt, Abby C. King, Eva Obarzanek, Michael Miller, Mary O’Toole, William L. Haskell, Laura Fast, Sheila Reynolds and for the Activity Counseling Trial Research Group

Background:

Physical activity recall (PAR) reliability was estimated in a three-site sample of African American and white adults. The sample was sedentary at baseline and more varied in physical activity 24 months later. Intraclass correlation coefficients (ICCs) were used to estimate the number of PAR assessments necessary to obtain a reliability of 0.70 at both timepoints.

Methods:

The PAR was administered ≤ 30 d apart at baseline (n = 547) and 24 months (n = 648). Energy expenditure ICC was calculated by race, gender, and age.

Results:

Baseline reliability was low for all groups with 4–16 PARs estimated to attain reliable data. ICCs at 24 months were similar (ICC = 0.54–0.55) for race and age group, with 2–3 PARs estimated to reach acceptable reliability. At 24 months, women were more reliable reporters than men.

Conclusion:

Low sample variability in activity reduced reliability, highlighting the importance of evaluating diverse groups. Despite evaluating a sample with greater physical activity variability, an estimated 2–3 PARs were necessary to obtain acceptable reliability.

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Jeroen Koekoek and Annelies Knoppers

Work in groups is often an integral part of physical education (PE) lessons, regardless of teaching and/or educational philosophies. Learning through group work is a multidimensional practice that generates a variety of ways in what and how children learn ( Barker, Quennersted, & Annerstedt, 2015

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Mickaël Campo, Diane Mackie, Stéphane Champely, Marie-Françoise Lacassagne, Julien Pellet and Benoit Louvet

French team may see the same specific skills in members of the British team—regardless of national affiliation, they are all soccer players, after all. Despite intergroup differences, members of all teams have in common a membership in an overarching group: athletes of their sport. Multiple authors have

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Brennan Petersen, Mark Eys, Kody Watson and M. Blair Evans

Oliver Price, 8, is in his fifth season with the Predators [football team] and said he has learned the importance of working together and having his teammates there to help him out. “We all work together as a group.” [Oliver’s teammate] Devin Strawinski, 8, who has played for the Predators

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Christopher C. Imes, Yaguang Zheng, Dara D. Mendez, Bonny J. Rockette-Wagner, Meghan K. Mattos, Rachel W. Goode, Susan M. Sereika and Lora E. Burke

/day and significant decreases in BMI and blood pressure compared with baseline values or control groups. 9 , 10 In addition, given that pedometers, fitness tracking tools, and smartphone applications are becoming less expensive and more accurate, they are being adopted ever more by the general public to

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Heather J. Leach, Katie B. Potter and Mary C. Hidde

reviewed publications assessed behavior maintenance. 21 Of those, only a handful of trials demonstrated greater PA in the intervention group versus a control group several months after the intervention ended, and although these studies did show a persistent intervention effect, PA still declined

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Albert V. Carron, Harry Prapavessis and J. Robert Grove

The purpose of this investigation was to examine the relationship of group cohesion to self-handicapping. The first issue focused on the relationship between the personality trait of self-handicapping and perceptions of group cohesion. A significant negative relationship (p < .001) was found between individual differences in the self-handicapping trait of making excuses and perceptions of the group's task cohesiveness. The second issue focused on whether group cohesion serves to moderate the relationship between the trait of self-handicapping and the use of self-handicapping strategies. The results showed that social cohesion was a significant (p < .006) moderator between the tendency to make excuses and the use of self-handicapping strategies. When social cohesion was high, the tendency to make excuses was positively related to the degree to which impediments to preparation for competition were perceived to be present.