Journal
INTERNATIONAL JOURNAL OF SPORT NUTRITION AND EXERCISE METABOLISM
Volume 23, Issue 1, Pages 24-30Publisher
HUMAN KINETICS PUBL INC
DOI: 10.1123/ijsnem.23.1.24
Keywords
total energy expenditure; exercise energy expenditure; energy intake; body composition; elite athletes; women
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Funding
- Department of Kinesiology at the University of Windsor
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Female athletes should aim to achieve energy balance to maintain health and have a high performance output. The purpose of this study was to investigate energy availability (EA) among members of a medium-size Canadian Interuniversity Sport women's volleyball team and to describe exercise energy expenditure (ExEE) during practices, game warm-ups, and games. Total daily energy expenditure was assessed over 7 d using the Bodymedia Sensewear Mini armband, while energy intake (EI) was measured with dietary food logs. Body composition was assessed using air-displacement plethysmography (Bod Pod). Energy availability was calculated using the equation EA = (EIkcal - ExEE(kcal))/kg fat-free mass (FFM). Participants consumed 3,435 (+/- 1,172) kcal/day and expended 3479 (+/- 604) kcal/day. Mean EA was 42.5 kcal . kg FFM-1 . d(-1) across all 7 d, and 2 participants fell below the 30-kcal . kg FFM-1 . d(-1) threshold. Furthermore, participants expended 511 (+/- 216), 402 (+/- 50), and 848 (+/- 155) kcal during practices, game warm-ups, and games, respectively. Overall, the participants were relatively weight stable and should be encouraged to continue fueling their exercise and high ExEE needs with appropriate nutritional strategies.
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