중거리 사이클 경기 후 말초부위 냉각과 활동적 페달링 회복이 피로물질 변화와 경기수행능력에 미치는 영향
Effect of Periphery Cooling and Active Pedaling Recovery on Fatigue Index and Performance After Middle-distance Cycle Competition
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초록
이 연구는 중학교 사이클 선수들을 대상으로 2km 개인 추발 후 말초부위의 냉각 회복방법이 500m 독주 경주의 경기력 향상에 미치는 영향을 조사하는 것이다. 또한 활동적 페달링 회복과 냉각회복에 따른 젖산농도변화가 경기력 향상에 기여할 수 있는지 분석하는 것이다. 8명의 연구대상자들이 실험에 참여하였다. 대상자들은 냉각회복조건(Cooling Condition; CC)과 일반회복조건(Normal Condition; NC)으로 실험 전 무선배정 되었고 총 2회 실험을 하였다. 실험은 앉아서 안정, 2km 모의 경주, 회복30분(모의경주 후 10분 동안 냉각 또는 일반회복, 그 다음 10분에서 20분까지 10분 동안 활동적 페달링 회복, 그 후 20분에서 30분까지 10분 동안 냉각 또는 일반회복), 500m 모의 경주 순서로 진행되었다. 실험 전 트랙사이클에 SRM(Schoberer Rad Mebtechnik)을 장착하고 개인별로 안장과 핸들의 위치를 조정하였다. 냉각회복은 대상자들이 앉아서 10℃ 물에 발목까지 입수하는 방법이었다. 실험결과 젖산 농도는 조건과 시기사이에 상호작용이 나타나지 않았다. 심부온도는 상호작용효과가 나타났으나(p＜.001), 평균피부온은 회복조건간 차이가 없었다. 500m 모의 경주에서 평균 페달링 파워는 냉각회복조건이 더 높았다(p＜.05). 그러나 최대페달링파워와 경주기록에는 조건간 차이가 없었다. 따라서 중거리 경기 후 말초부위의 냉각회복은 혈중 젖산 농도를 효과적으로 감소시키지 못했지만 추후의 500m 독주 경주에서 평균 페달링 파워를 향상 시켰다. 결론적으로 말초부위 냉각회복은 경기력향상에 기여할 수 있는 회복전략이라 생각된다.
Abstract
This study examined the effect of peripheral cooling and pedaling recovery following 2 km individual pursuit on the performance enhancement of the 500 m time trial in middle school competitive cyclists. In addition, it was examined whether changes of blood lactate level modified by the active pedaling and cooling recovery would contribute to the performance enhancement. Eight middle school competitive cyclists participated. They underwent two randomly assigned separate sessions; cooling condition (CC) and normal condition (NC). In each session, they rested seated and completed a 2 km simulated race. Then, they recovered for 30 min; 1) 10 min seated recovery with cooling (in CC) or no treatment (in NC), 2) 10 min active pedaling, and 3) 10 min seated recovery with cooling (in CC) or no treatment (in NC). Following the recovery, they competed for the 500 m simulated race. Before the race, SRM (Schoberer Rad Mebtechnik) was installed on a track cycle and individual fitting was performed. Peripheral cooling was done while the cyclist seated and submerged their two feet upto the ankle in 10℃ water. Neither difference between conditions nor interactions were found in blood lactate level. A significant interactions in body core temperature was noticed (p＜0.001), but no significant changes in mean skin temperature during recovery period were found. The average pedaling power during 500 m time trial was greater in CC than NC (p＜0.05). However, the maximal pedaling power and race time was not different between conditions. Collectively, the peripheral cooling following 2 km race did not reduce the blood lactate level efficiently, but the cooling improved the average pedaling power in the 500 m time trial. Based on the results, the peripheral cooling during recovery may be a contributing recovery strategy for performance enhancement.
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