Changes in bone turnover markers during the close season in elite football (soccer) players

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• 作者：Richard Weiler^a ; ^b ; ^d ; ^{rweiler@doctors.org.uk} ; Richard Keen^c ; Roger Wolman^c
• 关键词：Soccer ; Rest ; Orthopaedics ; De-conditioning ; Bone turnover markers ; Close season ; Sports injury
• 刊名：Journal of Science and Medicine in Sport
• 出版年：2012
• 期刊代码：P101_14402440
• 类别：med
• 出版时间：May, 2012
• 卷：15
• 期：3
• 页码：255-258
• 文件大小：250 K

摘要

Objectives

Bone turnover marker changes in response to physical activity are well documented. There is, however, little information on the extent and severity of skeletal de-conditioning in athletes in response to rest periods. This study analyses changes in markers of bone resorption and bone formation during the close season within the squad of an English Football Association Championship club.

Design

Evaluation was performed on the first team football squad just before the end of the 2007/2008 football season and again 8 weeks later before pre-season testing and training.

Method

Bone resorption was measured by serum concentration of C-terminal telopeptide (CTx) and bone formation by serum concentration of the N-terminal propeptide of type I procollagen (PINP). Twenty football players aged from 18 to 36 years (mean 23.6 years) were included in the study.

Results

The mean change in CTx during the close season was +0.14 ng/ml (95%CI: 0.21 to 0.06, p = 0.001). The mean change in PINP was 鈭?0.8 ng/ml (95%CI: 鈭?.9 to 鈭?7.7, p = 0.004).

Conclusions

In professional football players, a close season rest of 8 weeks results in an increase in bone resorption and a decrease in bone formation markers. This imbalance between formation and resorption may have negative effects on bone mass and structure. Future research should focus on understanding the many factors that could contribute to the changes found in the study during the close season.