离心肌肉负荷会影响重复下坡冲刺间歇期间的起搏策略。
The eccentric muscle loading influences the pacing strategies during repeated downhill sprint intervals.
作者信息
Baron B, Deruelle F, Moullan F, Dalleau G, Verkindt C, Noakes T D
机构信息
Faculté des Sciences de l'Homme et de l'Environnement, Département STAPS, Centre Universitaire de Recherches en Activités Physiques et Sportives, Université de La Réunion, 117, Le Tampon, France.
出版信息
Eur J Appl Physiol. 2009 Mar;105(5):749-57. doi: 10.1007/s00421-008-0957-6. Epub 2008 Dec 19.
The purpose was to compare self-chosen pace during ten repetitions of 60 m running sprints performed on a level surface (SPL), or when running uphill (SPU) or downhill (SPD) on a 4.7% slope. When expressed as percent of maximal running speed for corresponding condition, SPD was lower than SPL (95.28 +/- 1.93 vs. 97.31 +/- 1.29%; P = 0.044), which was lower than SPU (97.31 +/- 1.29 vs. 98.09 +/- 0.74%; P = 0.026). Heart rates, blood lactate concentrations and general perceived exertion were lower during SPD (163.8 +/- 8.3 bpm, 11.66 +/- 1.24 mmol L( -1), and 4.1 +/- 1.0) than SPL (169.8 +/- 7.8 bpm, 13.69 +/- 0.33 mmol L(-1), and 5.8 +/- 0.6), which were lower than SPU (174.9 +/- 8.7 bpm, 15.27 +/- 0.02, mmol L(-1), and 6.3 +/- 0.5) (P < 0.05 for all analyzes). Results show that the level of eccentric muscle loading influences the pacing strategy.
目的是比较在水平表面（SPL）上进行60米短跑重复十次时的自我选择速度，或者在4.7%坡度的上坡（SPU）或下坡（SPD）跑步时的自我选择速度。当表示为相应条件下最大跑步速度的百分比时，SPD低于SPL（95.28±1.93对97.31±1.29%；P = 0.044），而SPL低于SPU（97.31±1.29对98.09±0.74%；P = 0.026）。SPD期间的心率、血乳酸浓度和总体感知运动强度低于SPL（分别为163.8±8.3次/分钟、11.66±1.24毫摩尔/升和4.1±1.0），而SPL又低于SPU（174.9±8.7次/分钟、15.27±0.02毫摩尔/升和6.3±0.5）（所有分析P < 0.05）。结果表明，离心肌肉负荷水平会影响配速策略。
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