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首页> 外文期刊>Clinical journal of sport medicine: official journal of the Canadian Academy of Sport Medicine >Physiologic responses of competitive canadian cross-country skiers with disabilities
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Physiologic responses of competitive canadian cross-country skiers with disabilities

机译：加拿大残疾人越野滑雪运动员的生理反应

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Objective: To examine the acute cardiorespiratory and metabolic responses in competitive cross-country skiers with disabilities. Design: Cross-sectional comparisons using a select group of Canadian athletes training for the Vancouver 2010 Paralympic Winter Games. Setting: Canmore Nordic Centre Provincial Park, Canmore, Alberta. Participants: Nine competitive cross-country skiers (4 with visual impairment, 1 with traumatic brain injury, 3 with spinal cord injury, and 1 with cerebral palsy). Interventions: Three-minute and 12-minute exercise tests in the standing or sitting skiing position to voluntary fatigue. Main Outcome Measures: Cardiorespiratory responses using a telemetric system to compare the physiologic responses among the athletes with different disabilities. Heart rate (HR) and capillary lactate were measured at 2, 5, and 10 minutes of recovery. Results: The t test results indicated that the peak values of the absolute and relative oxygen uptake (V[Combining Dot Above]O2peak), HR, and ventilation rate were significantly higher during the 12-minute compared with the 3-minute protocol during standing skiing. However, the oxygen pulse and ventilatory equivalent for oxygen ratio were not significantly (P 0.05) different between the 2 protocols. Analysis of variance revealed no significant (P 0.05) differences among the 3 trials for these peak physiologic responses during sitting skiing. Cross-sectional comparisons of the peak physiologic responses between the standing and sitting skiers indicated significantly (P 0.05) higher values in the standing compared with the sitting position. Cardiorespiratory respiratory efficiency was significantly (P 0.05) lower in the sitting compared with the standing position. HR during 10 minutes of recovery was significantly correlated with VO 2peak. Pearson correlations were not significant between VO 2peak and lactate removal during recovery. Conclusion: These descriptive findings during the standing and sitting skiing protocols provide preliminary data that would be useful in testing, training, and classification of competitive skiers with disabilities.
机译：目的：研究残疾人越野滑雪运动员的急性心肺和代谢反应。设计：使用一组选定的加拿大运动员参加2010年温哥华残奥会冬季运动进行横断面比较。地点：艾伯塔省坎莫尔的坎莫尔北欧中心省立公园。参加者：9名越野滑雪运动员（4名视觉障碍者，1名颅脑外伤者，3名脊髓损伤者和1名脑瘫患者）。干预措施：在站立或坐着的滑雪姿势中进行3分钟和12分钟的运动测试，以防止自愿性疲劳。主要结果指标：使用遥测系统比较不同残疾运动员之间的生理反应的心肺反应。在恢复的2、5和10分钟时测量心率（HR）和毛细血管乳酸盐。结果：t检验结果表明，站立时12分钟内的绝对和相对氧气吸收（V2O2peak的峰值），心率和通气率的峰值显着高于站立时的3分钟方案。滑雪。但是，这两种方案之间的氧气脉冲和通气等效氧气比率没有显着差异（P> 0.05）。方差分析显示，对于坐姿滑雪过程中的这些峰值生理反应，三项试验之间无显着差异（P> 0.05）。站立和坐姿滑雪者之间峰值生理反应的横断面比较表明，站立姿势与坐姿姿势相比，站立姿势的值明显更高（P <0.05）。与站立姿势相比，坐着的心肺呼吸效率显着降低（P <0.05）。恢复10分钟期间的HR与VO 2peak显着相关。 VO 2peak和恢复期间乳酸清除之间的Pearson相关性不显着。结论：站立和坐姿滑雪方案中的这些描述性发现提供了初步数据，这些数据可用于测试，训练和分类竞技滑雪者的残疾。

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