American Society of Exercise Physiologists
JEPonline
Hormonal Responses to Consecutive Carbohydrate Ingestions during Heavy-Resistance Exercise
Hyun-Lyung Jung, Jong-Sik Ryu, Ho-Youl Kang
Exercise Metabolism Laboratory / Department of Physical Education / Kyungpook National University, 80, Daehak-ro, Buk-gu, Daegu, Republic of Korea
ABSTRACT
Jung HL, Ryu JS, Kang HY. Hormonal Responses to Consecutive Carbohydrate Ingestions during Heavy-Resistance Exercise. JEPonline 2018;21(5):97-108. The purpose of this study was to study investigates plasma hormonal responses to consecutive carbohydrate supplementations during heavy-resistance exercise. Ten male students randomly received either exercise treatment (8 RM) or exercise/carbohydrate (8 RM/CHO). The 8 RM/CHO group ingested carbohydrate (1.2 g·kg-1) between resistance exercise sessions. Each session consisted of 5 sets of leg press exercise with a maximum of 8 reps (8 RM), and there were four sessions during the 2-hr experimental period. Blood samples were drawn immediately before exercise (0) and in 15-min intervals during the 2-hr period. Plasma total testosterone, cortisol, human growth hormone (hGH), insulin, and glucose concentrations were determined. The plasma glucose level was significantly higher in 8 RM/CHO at 15, 30, 45, 60, and 90 min versus 8 RM (P ................
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