Krieg A, Meyer T, Clas S, Kindermann W
Institute of Sports and Preventive Medicine, University of the Saarland, Saarbrücken, Germany.
Int J Sports Med. 2006 Oct;27(10):818-23. doi: 10.1055/s-2005-872967. Epub 2006 Feb 1.
Competitive inline speedskating combines a movement pattern similar to speedskating on ice with pack-oriented competition modes known from cycling. The deep-seated body position leads to high static load and, thus, restricted blood flow within propulsive muscles. This condition may affect lactate kinetics and limit V.O (2peak). The present study compares physiologic reactions to graded cycling and skating exercise among top-level inline speedskaters and quantifies the effect of drafting. Eight male inline speedskaters of the top national level were examined. The study consisted of two graded exhaustive exercise tests (cycling and speedskating) and a pairwise drafting test. All tests were carried out with simultaneous gas exchange (MetaMax 2, Cortex, Germany) and heart rate measurements as well as determination of blood lactate concentrations. Maximal values of oxygen consumption (cycling: 4.91 +/- 0.60; skating: 4.85 +/- 0.50 l . min (-1); p = 0.78), lactate concentration, or heart rate were similar for cycling and skating. At workloads corresponding to blood lactate concentrations of 4 mmol . l (-1) oxygen uptake (cycling: 3.24 +/- 0.65; skating: 3.97 +/- 0.40 l . min (-1); p < 0.05) and heart rate (cycling: 162 +/- 9; skating: 173 +/- 6 min (-1); p < 0.05) were significantly higher during skating. The differences in heart rate ranged between - 2 and 23 min (-1). The drafting effect was 15 +/- 6 % at 30 km . h (-1) (3.34 +/- 0.19 vs. 2.83 +/- 0.29 l . min (-1)) and 14 +/- 5 % at 33 km . h (-1) (3.87 +/- 0.26 vs. 3.32 +/- 0.27 l . min (-1)). During inline speedskating the attainment of VO2peak is not impaired when compared to cycling exercise. However, the derivation of exercise prescriptions from a stepwise cycling test does not seem appropriate. The drafting effect of inline speedskating is within the range known from cycling.
竞技直排轮滑速滑结合了与冰上速滑相似的运动模式以及从自行车运动中熟知的群体竞争模式。身体的深层姿势会导致较高的静态负荷，从而使推进肌肉内的血流受限。这种情况可能会影响乳酸动力学并限制最大摄氧量（V.O₂peak）。本研究比较了顶级直排轮滑速滑运动员对分级自行车运动和轮滑运动的生理反应，并量化了尾随效应。对八名国家级顶级男性直排轮滑速滑运动员进行了检查。该研究包括两项分级力竭运动测试（自行车运动和速滑运动）以及一项两两尾随测试。所有测试均同时进行气体交换（德国Cortex公司的MetaMax 2）和心率测量以及血乳酸浓度测定。自行车运动和轮滑运动的最大耗氧量（自行车运动：4.91±0.60；轮滑运动：4.85±0.50升·分钟⁻¹；p = 0.78）、乳酸浓度或心率相似。在对应于血乳酸浓度为4毫摩尔·升⁻¹的工作量时，轮滑运动时的摄氧量（自行车运动：3.24±0.65；轮滑运动：3.97±0.40升·分钟⁻¹；p < 0.05）和心率（自行车运动：162±9；轮滑运动：173±6次·分钟⁻¹；p < 0.05）显著更高。心率差异在-2至23次·分钟⁻¹之间。在30公里·小时⁻¹时尾随效应为15±6%（3.34±0.19对2.83±0.29升·分钟⁻¹），在33公里·小时⁻¹时为14±5%（3.87±0.26对3.32±0.27升·分钟⁻¹）。与自行车运动相比，在直排轮滑速滑过程中最大摄氧量的达到并未受到损害。然而，从逐步自行车测试得出运动处方似乎并不合适。直排轮滑速滑的尾随效应在自行车运动已知的范围内。
