COMPARISON OF THE EFFECTS OF ENDURANCE TRAINING ON ALTERNATE DAYS AND ON CONSECUTIVE 4 DAYS EACH WEEK FOR 8 WEEKS ON THE ABUNDANCE OF PGC-1 alpha, CAMKII, NRF-1, MTTFA, AND COXIV PROTEINS IN RAT SKELETAL MUSCLE

作者：Qiu, Jiwen; Huang, Liping; Davie, Allan J.; Zhou, Shi^*

来源：Journal of Strength and Conditioning Research, 2019, 33(11): 3136-3144.

DOI：10.1519/JSC.0000000000002407

• training programming
• mitochondrial biogenesis
• muscle fiber type

The aim of this study was to compare the effects of 2 training protocols, training on alternate days (A) or on consecutive 4 days followed by 3 days of rest in each week (C) for 8 weeks, on selected proteins involved in the biogenesis and function of mitochondria in skeletal muscle. Eighty male Sprague Dawley rats were randomly allocated into 10 groups (n = 8 each), including Pre and Post control groups and A or C training groups with 8, 16, 24, and 32 training sessions, respectively. The vastus lateralis and soleus muscle samples were obtained 24 hours after the last training session, or at rest for the controls. The abundance of the proteins for PGC-1 alpha, CaMKII, NRF-1, mtTFA, and COXIV was analyzed by Western blotting. Analysis of the results with 2-way ANOVA showed no significant effect and interaction (training protocol by duration) in abundance of the proteins by the 2 protocols. However, fold changes normalized to control showed significant increases COXIV of the soleus muscle at most time points in both A and C training as indicated by Kruskal-Wallis H tests. There were significant correlations found between the abundance of the measured proteins of the vastus lateralis. The findings suggest that the 2 training protocols with the same intensity and total volume of work would not make a significant difference in respect of the changes in the targeted proteins. Alternative regulatory factors and the responses in different types of muscles to the training programs need to be examined in future research.

• 出版日期2019-11
• 单位天津体育学院; 天津中医药大学