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Mahon, Anthony D.; Marjerrison, Andrea D.; Lee, Jonah D.; Woodruff, Megan E.; Hanna, Lauren E. – Research Quarterly for Exercise and Sport, 2010
In this study, we compared measured maximal heart rate (HRmax) to two different HRmax prediction equations [220-age and 208-0.7(age)] in 52 children ages 7-17 years. We determined the relationship of chronological age, maturational age, and resting HR to measured HRmax and assessed seated resting HR and HRmax during a graded exercise test.…
Descriptors: Metabolism, Maturity (Individuals), Age, Prediction
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Bizet, Ivan; Laurencelle, Louis; Lemoyne, Jean; Larouche, Richard; Trudeau, Francois – Research Quarterly for Exercise and Sport, 2010
Physical educators experience several occupational constraints and a high risk of physical injury associated with a high attrition rate. Our investigation aimed at identifying the principal career reorientation factors among physical educators and reasons for their career changes. This research used semistructured interviews (n = 53) that were…
Descriptors: Experienced Teachers, Career Change, Physical Education Teachers, Injuries
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Knechtle, Beat; Wirth, Andrea; Knechtle, Patrizia; Rosemann, Thomas – Research Quarterly for Exercise and Sport, 2009
In 28 male Caucasian nonprofessional ultracyclists, we investigated whether anthropometry or training volume had an influence on race speed in the 600 km at the Swiss Cycling Marathon 2007. Anthropometric parameters (age, body mass, body height, skinfold thicknesses) were determined before the race to calculate body mass index and percent body…
Descriptors: Males, Physical Activities, Competition, Whites
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Dore, Eric; Bedu, Mario; Van Praagh, Emmanuel – Research Quarterly for Exercise and Sport, 2008
The purpose of this cross-sectional study was to investigate leg muscle power and compare two activities (jumping and cycling) in 383 girls and 407 boys ages 9-19 years. Results in anthropometric characteristics and jumping performance were comparable until midadolescence, and sex differences were observed. Lean leg volume (LLV) was the reason for…
Descriptors: Age, Human Body, Muscular Strength, Case Studies
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Chiviacowsky, Suzete; Wulf, Gabriele; de Medeiros, Franklin Laroque; Kaefer, Angelica; Wally, Raquel – Research Quarterly for Exercise and Sport, 2008
The purpose of the present study was to examine whether learning in 10-year-old children--that is, the age group for which the Chiviacowsky et al. (2006) study found benefits of self-controlled knowledge of results (KR)--would differ depending on the frequency of feedback they chose. The authors surmised that a relatively high feedback frequency…
Descriptors: Feedback (Response), Control Groups, Age, Foreign Countries
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Research Quarterly for Exercise and Sport, 1989
Effects of age, physical activity, physical fitness, and body mass index (BMI) on the occurrence of orthopedic problems were examined. For men, physical fitness, BMI, and physical activity were associated with orthopedic problems; for women, physical activity was the main predictor. Age was not a factor for either gender. (JD)
Descriptors: Age, Body Composition, Injuries, Musculoskeletal System