Cited by 73Muscle metabolism and nutritionCardiovascular and exercise physiologySports Performance and Training

Adaptations to skeletal muscle with endurance exercise training in the acutely fed versus overnight-fasted state

Stannard, Stephen R., Buckley, Alex J., Edge, Johann A., Thompson, Martin W.·2010·Journal of Science and Medicine in Sport

Abstract

Minimising carbohydrate (CHO) status in the peri-training period may accelerate the training adaptations normally observed. The aim of this study was to compare adaptations to endurance training undertaken in the acutely CHO fed and overnight-fasted states. Eight female and six male untrained, healthy participants: aged 26.6+/-5.8 years (mean+/-SD); height 174.7+/-7.6 cm; weight 75.3+/-11.4 kg; VO(2max) 3.48+/-0.67 l/min; were randomly divided into two training groups and undertook four weeks of five days per week endurance cycle ergometer training in either the overnight-fasted (FAST) or acutely fed (FED) state. FAST training had no effect on RER or plasma glucose, lactate and FFA concentrations during subsequent submaximal exercise. Training-induced changes in Vastus lateralis citrate synthase (CS) and 3-hydroxy-CoA dehydrogenase (HAD) activities were not different between training groups (P=0.655 and 0.549, respectively), but when the effect of gender was considered, men responded better to FAST and women responded better to FED. The FAST group showed a significantly greater training-induced increase in VO(2max) and resting muscle glycogen concentration than FED (P=0.014 and P=0.047 respectively), but there was no gender interaction. In conclusion, these results suggest that (a) meal ingestion prior to daily exercise can modify some of the exercise training-induced adaptations normally seen with endurance training compared to when daily exercise is undertaken in the overnight-fasted state; and (b) the extent of these adaptations in skeletal muscle differ slightly between men and women.

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Crossref · 10.1016/j.jsams.2010.03.002

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Authors
Stannard, S. R., Buckley, A. J., Edge, J. A., & Thompson, M. W.
Affiliations
  • The University of Sydney (AU)
  • University of Auckland (NZ)
Corresponding author
Stannard, Stephen R.
Venue
Journal of Science and Medicine in Sport
Publisher
Elsevier BV
Published
2010-07
Volume
13
Issue
4
Pages
465-469
ISSN
1440-2440 (ISSN-L)
OpenAlex
W1996854572
Cited by
73
References
21
Citations by year
2025: 4 · 2024: 3 · 2023: 3 · 2022: 7 · 2021: 6 · 2020: 9 · 2019: 6 · 2018: 6 · 2017: 2 · 2016: 5 · 2015: 3 · 2014: 3 · 2013: 10 · 2012: 1
FWCI
2.24
Type
journal article
Language
en
Open access
closed
Locations
  • Journal of science and medicine in sport (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cell Biology › Muscle metabolism and nutrition
  • Health Sciences › Medicine › Complementary and alternative medicine › Cardiovascular and exercise physiology
  • Health Sciences › Medicine › Orthopedics and Sports Medicine › Sports Performance and Training
Keywords
endurance training, skeletal muscle adaptation, overnight fasting, carbohydrate status, citrate synthase, muscle glycogen, VO2max, sex differences, vastus lateralis, fat oxidation, plasma lactate, plasma glucose, plasma free fatty acids
MeSH terms
Adaptation, Physiological, Adult, Citrate (si)-Synthase, Fasting, Female, Glycogen, Humans, Male, Oxygen Consumption, Physical Endurance, Muscle, Skeletal, Young Adult

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