CAJ | 학술논문

目的：分析骑行次数不变和次数递减的两种功率车SIT方案运动负荷间的差异，并探讨不同运动强度对踏蹬效率的影响。方法：采用配对设计将14名男性自行车运动员分入骑行次数不变组（Constantgroup，CG）和骑行次数递减组（Decreasedgroup，133），每组7名。两组在连续4周内完成8节SIT课，每节训练课进行4组、总次数为20次的骑行，其中，CG组4组骑行次数为5—5—5—5次，DG组为8—6-4—2次；两组SIT的骑行和间歇时间均为20s和10s，踏频要求高于120rpm。训练采用WattbikePro功率自行车（英国），电磁和空气阻力分别设为1档和7档，采样频率100Hz。测试分析指标包括踏蹬频率、速度、功率、功、踏蹬力、力矩、达到最大力值的时间和角度、心率、血乳酸等。分别采用配对检验和Pearson相关对数据进行统计学检验。结果：DG组完成第4组骑行时的平均频率显著高于CG组。13G组与CG组Pmean和Vmean的变化趋势相反，在完成第3、4组骑行时显著高于CG组（P〈0．05）。虽然DG组组内Wtotal逐渐降低，但4组总功较CG组高15．6％（P〈0．05）。DG组HRmean逐渐下降，但第4组后的即刻HI丑较CG组高6．4％（P％0．05）。13（3组Fmean和Mmean逐渐增加，并在完成后3组骑行时显著高于CG组（P〈0．05）。两实验组Fmean较CVmean与Pmean之间的相关性更高，且组间差异不明显。CG组Emean与Wmean出现相同的下降趋势，相反，DG组则有所升高，并在完成后2组骑行时显著高于（二G组（P〈0．05）；DG组完成第4组骑行时达到最大力值的时间和角度均明显小于CG组（P〈0．05）。结论：次数递减的SIT方案可使运动员在完成相同次数骑行时达到更高的运动强度和运动量，并降低疲劳对踏蹬效率的影响。
목적：분석기행차수불변화차수체감적량충공솔차SIT방안운동부하간적차이，병탐토불동운동강도대답등효솔적영향。방법：채용배대설계장14명남성자행차운동원분입기행차수불변조（Constantgroup，CG）화기행차수체감조（Decreasedgroup，133），매조7명。량조재련속4주내완성8절SIT과，매절훈련과진행4조、총차수위20차적기행，기중，CG조4조기행차수위5—5—5—5차，DG조위8—6-4—2차；량조SIT적기행화간헐시간균위20s화10s，답빈요구고우120rpm。훈련채용WattbikePro공솔자행차（영국），전자화공기조력분별설위1당화7당，채양빈솔100Hz。측시분석지표포괄답등빈솔、속도、공솔、공、답등력、력구、체도최대력치적시간화각도、심솔、혈유산등。분별채용배대검험화Pearson상관대수거진행통계학검험。결과：DG조완성제4조기행시적평균빈솔현저고우CG조。13G조여CG조Pmean화Vmean적변화추세상반，재완성제3、4조기행시현저고우CG조（P〈0．05）。수연DG조조내Wtotal축점강저，단4조총공교CG조고15．6％（P〈0．05）。DG조HRmean축점하강，단제4조후적즉각HI축교CG조고6．4％（P％0．05）。13（3조Fmean화Mmean축점증가，병재완성후3조기행시현저고우CG조（P〈0．05）。량실험조Fmean교CVmean여Pmean지간적상관성경고，차조간차이불명현。CG조Emean여Wmean출현상동적하강추세，상반，DG조칙유소승고，병재완성후2조기행시현저고우（이G조（P〈0．05）；DG조완성제4조기행시체도최대력치적시간화각도균명현소우CG조（P〈0．05）。결론：차수체감적SIT방안가사운동원재완성상동차수기행시체도경고적운동강도화운동량，병강저피로대답등효솔적영향。
Objectives：This paper analyses the differences between the two sprint interval train ing （SIT） programs of riding numbers constant and riding numbers decreased with the bicycle ergometer, and investigates the effect of exercise intensity on the cycling efficiency. Methods： 14 male cyclists were separated into the riding number constant group （CG） and the riding number decreased group （DG） with the paired design. Each group included seven subjects. Both groups performed eight SIT sessions in four consecutive weeks. Each training sessions in- cluded four sets with twenty riding times totally. The riding times of CG group was 5-5-5-5 and I~ group was 8-6 4-2. The riding and intermittent time of SIT were 20s and 10s respec- tively and cadence should keep 120rpm above. The Wattbike Pro cycle ergometer （UK） was applied. The magnetic climb and Air Brake Gear were set at level 1 and level 7 respectively, and the sampling rate was 100Hz. The cadence, speed, power, work, force, torque, HR, BLa, angle and time to force peak were analyzed. Results： 1） The mean power of 1~ group in the 4th set was obvious higher than CG group. 2） The Pmean~ s and Vmean＇ s variation trend of IX3 were in the opposite of the CG, which were significant higher than CG in the 3~d and 4th set （P%0. 05）. The set Wtotal of DG reduced gradually, but the total energy of four sets riding of DG was 15.6% higher than CG（P%0.05）. The HRmean of IX3 also reduced gradually, hut the immediate BLa of EG after the 4th set was 6.4% higher than CG （P%0.05）. 3） Fmean and Mmean of DG group gradually increased, and were significant higher than CG in the last three sets （P%0.05）. The Fmean ~s correlation with Pmean was higher than CVmean in both groups, and there was no difference between groups. 4） Emean and Wmean of CG group ap- peared the same downward trend, instead EG group was increased and was significant higher than CG group in the last two sets （P%0.05）. The time and angle to force peak of EG group were less than the CG group in the 4th set （P~0.05）. Conclusions： The number decreasedSIT can make the athletes completing the higher exercise intensity and volume than the number constant one, and reduce the influence of fatigue on cycling efficiency.