Effects of Rapid Weight Loss and Wrestling on Muscle Glycogen Concentration

MRI evaluation of body composition changes in wrestlers undergoing rapid weight loss

“…In a study of wrestlers conducted by Tarnopolsky et al ,19 glycogen in the skeletal muscles recovered during the 17 h recovery period after weight reduction, showing no difference from the level before the weight reduction. This result suggests the possibility that glycogen in the liver and other regions of the body was produced from food ingested after the weigh-in.…”

Influence of Nutrient Intake after Weigh-In on Lightweight Rowing Performance

“…Such short-term weight-loss strategies can reduce muscle glycogen stores by 30-50% (2,27). Although it may seem unlikely that substrate availability limits performance during a 5-to 7-min event (6), it has been recognized that performance of high-intensity exercise of short duration (2-7 min) can be impaired if carbohydrate reserves are sufficiently compromised (12).…”

Body mass management of lightweight rowers: nutritional strategies and performance implications

“…Acute strategies used to make weight can reduce muscle glycogen stores by 30–50% 30 101. While a 2 h period of recovery is insufficient for full restoration of muscle glycogen reserves,101 102 it is unlikely that carbohydrate reserves limit performance during a 5–7 min event,103 even when increased muscle glycogen utilisation associated with hypohydration is considered 104.…”

“…While a 2 h period of recovery is insufficient for full restoration of muscle glycogen reserves,101 102 it is unlikely that carbohydrate reserves limit performance during a 5–7 min event,103 even when increased muscle glycogen utilisation associated with hypohydration is considered 104. However, the implications of compromised muscle glycogen stores on repeat performance, as required during a multiday regatta, remain to be investigated.…”