Cited by 14Muscle metabolism and nutritionExercise and Physiological ResponsesSports Performance and Training

Presleep Protein Supplementation Does Not Improve Recovery During Consecutive Days of Intense Endurance Training: A Randomized Controlled Trial

Larsen, Mads S., Clausen, Dagmar, Jørgensen, Astrid Ank, Mikkelsen, Ulla R., Hansen, Mette·2019·International Journal of Sport Nutrition and Exercise Metabolism

Abstract

Recent studies demonstrate that protein ingestion immediately before sleep improves muscle recovery during the night following resistance exercise. Whether this feeding strategy benefits recovery from endurance training has yet to be established. The aim of this study was to investigate the effects of whey protein isolate ingested every night before sleep on subsequent performance and circulatory markers of muscular recovery during a week of intensified endurance training mimicking a training camp. In a parallel design, 32 trained runners underwent a 1-week intervention with a rigorously controlled diet (carbohydrate = 7.2 g·kg−1·day−1, protein = 1.8 g·kg−1·day−1, and fat = 1.0 g·kg−1·day−1) and exercise program (11 sessions) while receiving either a protein (0.5 g·kg−1·day−1) or carbohydrate (0.5 g·kg−1·day−1) beverage every night before sleep. Blood samples were obtained on the morning of Days 1, 4, 7, and 8 and analyzed for markers of muscle damage (creatine kinase, lactate dehydrogenase, and myoglobin). The postintervention 5-km time-trial performance was significantly impaired in both groups (11 ± 24 s, p < .01). Plasma creatine kinase (227% ± 221%, p < .01), lactate dehydrogenase (18% ± 22%, p < .01), and myoglobin (72% ± 62%, p < .01) increased gradually throughout the week with no difference between the groups (p > .05). In conclusion, the presleep protein ingestion did not reduce the decline in performance or ameliorate the rise of circulatory markers of muscle damage during a week of intensified training when compared with the isocaloric carbohydrate ingestion.

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Crossref · 10.1123/ijsnem.2018-0286

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Authors
Larsen, M. S., Clausen, D., Jørgensen, A. A., Mikkelsen, U. R., & Hansen, M.
Affiliations
  • Aarhus University (DK)
  • Arla Foods (Denmark) (DK)
Venue
International Journal of Sport Nutrition and Exercise Metabolism
Published
2019-07-01
Volume
29
Issue
4
Pages
426-434
ISSN
  • 1526-484X (ISSN-L)
  • 1543-2742
OpenAlex
W2909333469
Cited by
14
References
43
Citations by year
2024: 1 · 2023: 4 · 2022: 1 · 2021: 3 · 2020: 4 · 2019: 1
FWCI
1.19
Type
journal article
Language
en
Open access
closed
Locations
  • International Journal of Sport Nutrition and Exercise Metabolism (publishedVersion)
  • PubMed (publishedVersion)
Funders
Innovationsfonden
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cell Biology › Muscle metabolism and nutrition
  • Health Sciences › Medicine › Rehabilitation › Exercise and Physiological Responses
  • Health Sciences › Medicine › Orthopedics and Sports Medicine › Sports Performance and Training
Keywords
whey protein isolate, endurance training, muscle recovery, muscle damage markers, creatine kinase, lactate dehydrogenase, myoglobin, trained runners, training camp
MeSH terms
Whey Proteins, Endurance Training, Adult, Creatine Kinase, Dietary Carbohydrates, Double-Blind Method, Humans, L-Lactate Dehydrogenase, Male, Myoglobin, Running, Sleep, Dietary Supplements, Athletic Performance, Young Adult, Sports Nutritional Physiological Phenomena

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