Korean J Sports Med.  2018 Sep;36(3):149-157. 10.5763/kjsm.2018.36.3.149.

An Analysis of Change on Alpine Skiers' Body Composition, Anaerobic Power, and Isokinetic Muscular Function between before and after Winter Season

• Choi HJ
• Kim SH

• KMID: 2429213
• DOI: http://doi.org/10.5763/kjsm.2018.36.3.149

Abstract

PURPOSE
The purpose of this study was to investigate the changes on alpine skiers' body composition, anaerobic power, isokinetic knee strength and muscle balance ratio (hamstring to quadriceps [HQ] ratio) before and after winter season.
METHODS
The subjects of this study was 22 elite alpine skier, aged 16-20 years. Participants were divided into two groups (male, 12; female, 10). The study conducts a periodization training program in the winter season for 4 months. The data processing of this study was analyzed by paired t-test, using SPSS 21.0 statistics program.
RESULTS
There was significance on fat free mass in male group (p < 0.05); there was significance on anaerobic power and average power in female group (p < 0.01), and fatigue index significantly increased in male group (p < 0.05). There was significance on extension power of male group and flexion power of female group in 30°/sec. There was significance on extension power of both groups in 180°/sec (p < 0.05). There was significant increase on flexion power of male group in 240°/sec (p < 0.01). There was significant increase on H/Q% of female right side in 30°/sec (p < 0.01). There was significance on right side of both groups in 180°/sec (p < 0.05). There were significances on right and left side of both groups in 240°/sec (male, p < 0.01; female, p < 0.05).
CONCLUSION
Therefore, this study suggests that the periodization training should be important to maintain and to develop seasonal condition of alpine skiers.

Keyword

Alpine ski; Anaerobic power; Isokinetic strength; Muscle balance ratio; Periodization training

MeSH Terms

Body Composition*
Education
Fatigue
Female
Humans
Knee
Male
Seasons*

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