期刊
APPLIED PHYSIOLOGY NUTRITION AND METABOLISM
卷 46, 期 10, 页码 1298-1302出版社
CANADIAN SCIENCE PUBLISHING
DOI: 10.1139/apnm-2021-0301
关键词
creatine; sex-differences; cardiac and skeletal muscle; cytoprotection
资金
- NSERC [261427]
This study found that there are sex- and tissue-dependent responses to creatine monohydrate (CM) supplementation in rats. Additionally, total creatine concentrations in muscles were significantly higher in female rats compared to males.
Sprague-Dawley rats (n = 32) underwent 8-weeks of creatine monohydrate (CM) supplementation (0, 2.5, 5, and 10 gm. Total creatine (TCr) concentrations in female white fibre-dominant gastrocnemius (WGAS) and cardiac muscle (HRT) were significantly higher compared with males (p < 0.05). CM supplementation increased TCr concentrations in female WGAS (p < 0.05) and HRT (p < 0.01) and in male red fibre-dominant gastrocnemius muscle (RGAS) (p < 0.05). Future research should further investigate sex-differences in basal levels of TCr and the response to CM supplementation. Novelty: There is a sex- and tissue-dependant response to CM supplementation in rats.
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