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Cited by 99Muscle metabolism and nutritionSports Performance and TrainingCardiovascular and exercise physiology

Dietary carbohydrate, muscle glycogen, and power output during rowing training

Simonsen, J. C., Sherman, W. M., Lamb, D. R., Dernbach, A. R., Doyle, J. A., Strauss, R.·1991·Journal of Applied Physiology
DOI 10.1152/jappl.1991.70.4.1500
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Abstract

The belief that high-carbohydrate diets enhance training capacity (mean power output) has been extrapolated from studies that have varied dietary carbohydrate over a few days and measured muscle glycogen but did not assess power output during training. We hypothesized that a high-carbohydrate (HI) diet (10 g.kg body mass-1.day-1) would promote greater muscle glycogen content and greater mean power output during training than a moderate-carbohydrate (MOD) diet (5 g.kg body mass-1.day-1) over 4 wk of intense twice-daily rowing training. Dietary protein intake was 2 g.kg body mass-1.day-1, and fat intake was adjusted to maintain body mass. Twelve male and 10 female collegiate rowers were randomly assigned to the treatment groups. Training was 40 min at 70% peak O2 consumption (VO2) (A.M.) and either three 2,500-m time trials to assess power output or interval training at 70-90% peak VO2 (P.M.). Mean daily training was 65 min at 70% peak VO2 and 38 min at greater than or equal to 90% peak VO2. Mean muscle glycogen content increased 65% in the HI group (P less than 0.05) but remained constant at 119 mmol/kg in the MOD group over the 4 wk. Mean power output in time trials increased 10.7 and 1.6% after 4 wk in the HI and MOD groups, respectively (P less than 0.05). We conclude that a diet with 10 g carbohydrate.kg body mass-1.day-1 promotes greater muscle glycogen content and greater power output during training than a diet containing 5 g carbohydrate.kg body mass-1.day-1 over 4 wk of intense twice-daily rowing training.(ABSTRACT TRUNCATED AT 250 WORDS)

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Crossref · 10.1152/jappl.1991.70.4.1500

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Authors
Simonsen, J. C., Sherman, W. M., Lamb, D. R., Dernbach, A. R., Doyle, J. A., & Strauss, R.
Affiliations
The Ohio State University (US)
Venue
Journal of Applied Physiology
Publisher
American Physiological Society
Published
1991-04-01
Volume
70
Issue
4
Pages
1500-1505
ISSN
  • 0161-7567 (ISSN-L)
  • 8750-7587
  • 1522-1601
DOI
10.1152/jappl.1991.70.4.1500
OpenAlex
W2127504920
Cited by
99
References
17
Citations by year
2026: 1 · 2025: 1 · 2024: 1 · 2021: 2 · 2020: 2 · 2019: 2 · 2018: 2 · 2017: 4 · 2016: 2 · 2015: 3 · 2014: 3 · 2013: 6 · 2012: 1
FWCI
1.03
Type
journal article
Language
en
Open access
closed
Locations
  • Journal of Applied Physiology (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cell Biology › Muscle metabolism and nutrition
  • Health Sciences › Medicine › Orthopedics and Sports Medicine › Sports Performance and Training
  • Health Sciences › Medicine › Complementary and alternative medicine › Cardiovascular and exercise physiology
Keywords
dietary carbohydrates, muscle glycogen, output power, rowing training, high-carbohydrate diet, time trial, interval training, endurance training, collegiate rowers, carbohydrate intake
MeSH terms
Adult, Blood Glucose, Dietary Carbohydrates, Female, Glycogen, Humans, Male, Muscles, Oxygen Consumption, Physical Education and Training, Exercise

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