Acute weight loss followed by an aggressive nutritional recovery strategy has little impact on on-water rowing performance

Gary J Slater; A J Rice; R Tanner; K Sharpe; C J Gore; David G Jenkins; A G Hahn

doi:10.1136/bjsm.2005.019604

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Acute weight loss followed by an aggressive nutritional recovery strategy has little impact on on-water rowing performance

Journal article

Peer reviewed

Acute weight loss followed by an aggressive nutritional recovery strategy has little impact on on-water rowing performance

Gary J Slater, A J Rice, R Tanner, K Sharpe, C J Gore, David G Jenkins and A G Hahn

British Journal of Sports Medicine, Vol.40(1), pp.55-59

2006

DOI: https://doi.org/10.1136/bjsm.2005.019604

PMCID: PMC2491923

PMID: 16371492

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Abstract

Human Movement and Sports Science

Nutrition and Dietetics

making weight

hypohydration

recovery

rowing

Objectives: To assess the influence of moderate, acute weight loss on on-water rowing performance when aggressive nutritional recovery strategies were used in the two hours between weigh in and racing. Methods: Competitive rowers (n = 17) undertook three on-water 1800 m time trials under cool conditions (mean (SD) temperature 8.4 (2.0)°C), each separated by 48 hours. No weight limit was imposed for the first time trial—that is, unrestricted body mass (UNR1). However, one of the remaining two trials followed a 4% loss in body mass in the previous 24 hours (WT–4%). No weight limit was imposed for the other trial (UNR2). Aggressive nutritional recovery strategies (WT–4%, 2.3 g/kg carbohydrate, 34 mg/kg Na+, and 28.4 ml/kg fluid; UNR, ad libitum) were used in the first 90 minutes of the two hours between weigh in and performance trials. Results: WT–4% had only a small and statistically non-significant effect on the on-water time trial performance (mean 1.0 second, 95% confidence interval (CI) –0.9 to 2.8; p = 0.29) compared with UNR. This was despite a significant decrease in plasma volume at the time of weigh in for WT–4% compared with UNR (–9.2%, 95% CI –12.8% to –5.6%; p<0.001). Conclusions: Acute weight loss of up to 4% over 24 hours, when combined with aggressive nutritional recovery strategies, can be undertaken with minimal impact on on-water rowing performance, at least in cool conditions.

Details

Title: Acute weight loss followed by an aggressive nutritional recovery strategy has little impact on on-water rowing performance
Authors: Gary J Slater (Author) - Australian Institute of Sport
A J Rice (Author) - Australian Institute of Sport
R Tanner (Author) - Australian Institute of Sport
K Sharpe (Author) - University of Melbourne
C J Gore (Author) - Australian Institute of Sport
David G Jenkins (Author) - University of Queensland
A G Hahn (Author) - Australian Institute of Sport
Publication details: British Journal of Sports Medicine, Vol.40(1), pp.55-59
Publisher: B M J Group
Date published: 2006
DOI: 10.1136/bjsm.2005.019604
ISSN: 0306-3674
PMID: 16371492; PMC2491923
Organisation Unit: University of the Sunshine Coast, Queensland; School of Health - Nutrition & Dietetics; School of Health and Sport Sciences - Legacy; School of Health and Behavioural Sciences - Legacy
Language: English
Record Identifier: 99449641002621
Output Type: Journal article

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