- 著者
-
Jeremy A. Gentles
William G. Hornsby
Howard S. Gray
Jonathan A. Miller
Andrew R. Dotterweich
Charles A. Stuart
Michael H. Stone
- 出版者
- Active Aging Research Center
- 雑誌
- Journal of Trainology (ISSN:21865264)
- 巻号頁・発行日
- vol.4, no.1, pp.25-31, 2015-06-18 (Released:2015-07-06)
- 参考文献数
- 47
- 被引用文献数
-
3
Objectives: This study investigated chronic changes in cell free DNA (cf-DNA) throughout a collegiate soccer season. The relationship between cf-DNA, C-reactive protein (CRP), creatine kinase (CK), testosterone (T), cortisol (C), testoster one-cortisol ratio (T:C), body mass and body composition were also examined. Design: Longitudinal study design with repeated measures and group comparisons. Methods: Twenty three NCAA Division I male soccer players were divided into two groups. Starters were placed in Group 1 (G1) and non-starters were placed in Group 2 (G2). cf-DNA, CRP, CK, T, C, T:C, body mass and body composition were taken three times, corresponding to pre-season, approximately mid-season and immediately after the concluding the season. Results: In G1, cf-DNA, CRP, CK, cf-DNA %∆, CRP %∆ and, CK %∆ were all statistically higher at T2 and T3 than T1. In G2, CRP %∆ was statistically higher at T2 than T1. In G2, cf-DNA %∆, CRP %∆ and CK %∆ were higher at T2 and T3 than T1. Conclusions: This suggests that cf-DNA may be a useful marker that can reflect accumulated soccer training and competi tive stressors.