Total Energy Expenditure, Physical Activity Level, and Water Turnover of Collegiate Dinghy Sailors in a Training Camp

in International Journal of Sport Nutrition and Exercise Metabolism
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  • 1 Japan Society for the Promotion of Science
  • 2 Japan Institute of Sports Sciences
  • 3 Rokuto Orthopedic Clinic
  • 4 Fukuoka University Institute for Physical Activity
  • 5 Fukuoka University
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Prior studies have examined offshore sailing and energy strategies using accurate total energy expenditure (TEE) measurement in free-living conditions. However, no research has studied energy and water requirements during dinghy class sailing such as an Olympic event with concentrated training. This study aimed to investigate the TEE, physical activity level (PAL), and water turnover (rH2O) of collegiate dinghy sailors in a training camp using the doubly labeled water method. Eleven dinghy sailing collegiate athletes (nine males and two females) participated. The doubly labeled water method was used to determine the participants’ TEE and PAL over 8 days (six training and two nontraining days). Participants trained approximately 7 hr/day on water. Body fat was measured using a stable isotope dilution method. The rH2O was estimated using deuterium turnover. The mean TEE, PAL, and rH2O were 17.30 ± 4.22 MJ/day (4,133 ± 1,009 kcal/day), 2.8 ± 0.3 (range: 2.1–4.1), and 3.3 ± 0.7 L/day (range: 2.6–4.5 L/day), respectively. To our knowledge, this was the first study to use the doubly labeled water method to determine TEE, PAL, and rH2O as references for competitive dinghy sailors in a spring training camp. Our results may serve as a reference to assist competitive dinghy sailors in determining their required nutritional support.

Sagayama is with the Japan Society for the Promotion of Science, Tokyo, Japan; and the Japan Institute of Sports Sciences, Tokyo, Japan. Toguchi is with Rokuto Orthopedic Clinic, Okinawa, Japan. Yasukata, Higaki, and Tanaka are with the Fukuoka University Institute for Physical Activity, Fukuoka, Japan. Yasukata, Yonaha, Higaki, and Tanaka are with the Faculty of Sports and Health Science, Fukuoka University, Fukuoka, Japan.

Address author correspondence to Hiroyuki Sagayama at hiroyuki.sagayama@jpnsport.go.jp and sagayama.h@gmail.com.
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