Elite racewalkers take part in AIS glycogen loading study
Periodised diet preferable to low carbohydrate, high fat diet
Louise Burke and researchers from the AIS, Australian Catholic University and global nutrition community investigated the effects of three different diets on metabolism and performance. World-class endurance athletes followed a ketogenic low-carbohydrate high-fat diet (LCHF), high carbohydrate diet or a periodised diet with phases of low and high carbohydrate availability.
In contrast to training with diets providing chronic or periodised high-carbohydrate availability, adaptation to the typical LCHF diet negated performance benefits in elite endurance athletes.
Gelatin supplementation could benefit injury prevention and tissue repair
Greg Shaw collaborated with UC Davis College to investigate the effect of gelatin supplementation on collagen synthesis after high-impact exercise.
The results indicate that adding gelatin to an intermittent exercise program improves collagen synthesis and could play a beneficial role in injury prevention and tissue repair.
Weight loss and regain strategies in combat sports
Reid Reale completed a series of studies investigating weight-making strategies in combat sports. Combat sport athletes acutely reduce body mass prior to weigh-in to gain a size/strength advantage over smaller opponents. Few studies have investigated these practices in combat athletes. Winners in an International judo competition showed a greater re-gain in body mass post weigh-in than losers. Findings were different for elite boxers.
Influences on body composition measurements using DXA
Julia Bone is completing a series of studies investigating the use of DXA to assess body composition. DXA is increasingly used to measure body composition in athletes and it is important to understand how to standardise measurements to achieve meaningful results. Julia’s research indicates that changes in factors such as muscle glycogen and water can influence DXA estimates of lean mass. This information needs to be considered when interpreting results from DXA scans.