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职业公路自行车比赛计时赛期间的运动强度。

Exercise intensity during competition time trials in professional road cycling.

作者信息

Padilla S, Mujika I, Orbañanos J, Angulo F

机构信息

Departamento de Investigación y Desarrollo, Servicios Médicos, Athletic Club de Bilbao, Basque Country, Spain.

出版信息

Med Sci Sports Exerc. 2000 Apr;32(4):850-6. doi: 10.1097/00005768-200004000-00019.

DOI:10.1097/00005768-200004000-00019
PMID:10776906
Abstract

PURPOSE

To estimate, upon competition heart rate (HR), exercise intensity during time trials (TT) in professional road cycling.

METHODS

Eighteen world-class cyclists completed an incremental laboratory cycling test to assess maximal power output (Wmax), maximal HR (HRmax), onset of blood lactate accumulation (OBLA), lactate threshold (LT), and a HR-power output relationship. An OBLA(ZONE) (HR(OBLA) +/- 3 beats x min(-1)) and a LT(ZONE) (HR(LT) +/- 3 beats x min(-1)) were described. HR was monitored during 12 prologue (<10 km, PTT), 18 short (<40 km, STT), 19 long (>40 km, LTT), eight uphill (UTT), and seven team (TTT) time trials. A HR-power output relationship was computed to estimate each cyclist's power output during TT racing from competition HR. Competition training impulse (TRIMP) values were estimated from HR and race duration.

RESULTS

%HRmax were 89+/-3%, 85+/-5%, 80+/-5%, 78+/-3%, and 82+/-2% in PTT, STT, LTT, UTT, and TTT, respectively. The amount of TRIMP were, respectively, 21+/-3, 77+/-23, 122+/-27, 129+/-14, and 146+/-6. Competition HR values relative to HR(OBLA) and HR(LT) were, respectively, 100+/-3%, 114+/-8% in PTT, 95+/-7%, 108+/-9% in STT, 89+/-5%, 103+/-8% in LTT, 87+/-2%, 101+/-5% in UTT, and 91+/-4%, 105+/-11% in TTT.

CONCLUSIONS

%HRmax, TRIMP and time distribution around HR(OBLA) and HR(LT) reflected the physiological demands of different TT categories. HR(OBLA) and HR(LT) were accurate intensity markers in events lasting, respectively, < or =30 (PTT and STT) and > or =30 min (LTT, UTT, TTT).

摘要

目的

根据比赛心率(HR)估算职业公路自行车计时赛(TT)期间的运动强度。

方法

18名世界级自行车运动员完成了递增式实验室自行车测试,以评估最大功率输出(Wmax)、最大心率(HRmax)、血乳酸堆积起始点(OBLA)、乳酸阈(LT)以及心率与功率输出的关系。确定了OBLA区间(HR(OBLA) ± 3次/分钟)和LT区间(HR(LT) ± 3次/分钟)。在12场个人计时赛(<10公里,PTT)、18场短距离计时赛(<40公里,STT)、19场长距离计时赛(>40公里,LTT)、8场上坡计时赛(UTT)和7场团体计时赛(TTT)期间监测心率。计算心率与功率输出的关系,以便根据比赛心率估算每位自行车运动员在计时赛中的功率输出。根据心率和比赛持续时间估算比赛训练冲量(TRIMP)值。

结果

在PTT、STT、LTT、UTT和TTT中,%HRmax分别为89±3%、85±5%、80±5%、78±3%和82±2%。TRIMP量分别为21±3、77±23、122±27、129±14和146±6。相对于HR(OBLA)和HR(LT)的比赛心率值,在PTT中分别为100±3%、114±8%,在STT中为95±7%、108±9%,在LTT中为89±5%、103±8%,在UTT中为87±2%、101±5%,在TTT中为91±4%、105±11%。

结论

%HRmax、TRIMP以及围绕HR(OBLA)和HR(LT)的时间分布反映了不同计时赛类别的生理需求。HR(OBLA)和HR(LT)分别是持续时间≤30分钟(PTT和STT)和≥30分钟(LTT、UTT、TTT)赛事中的准确强度标志物。

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