Pulmonary adaptations to swim and inspiratory muscle training
Pulmonary adaptations to swim and inspiratory muscle training
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DOI：
10.1007/s00421-008-0759-x
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发表时间：
2008-08-01
影响因子：
3
通讯作者：
Ionescu, Alina A.
中科院分区：
文献类型：
--
作者：
Mickleborough, Timothy D.;Stager, Joel M.;Ionescu, Alina A.
由于竞技游泳运动员的异常呼吸特征被认为是由于吸气肌肉工作引起的，因此在为期12周的高强度游泳训练(ST)开始和结束时，对30名竞技游泳运动员的呼吸肌和肺功能进行了评估。游泳者(n=10)接受ST+吸气肌训练(IMT)或ST+Sham-IMT(ST+Sham-IMT，n=10)，或作为对照组(仅ST，ST，n=10)。在12周的研究期开始和结束时评估呼吸和肺功能的测量。ST+IMT组、ST+Sham-IMT组和ST组的呼吸和肺功能在基线和12周研究结束时无显著差异(P>；0.05)。然而，在12周的研究结束时，所有组中的一些呼吸和肺功能变量，如最大吸气和呼气压力、吸气功率输出、用力肺活量、1-S用力呼气和吸气容积、总肺活量和肺弥散量均显著增加(P<；0.05)。这项研究表明，接受竞技ST训练的优秀游泳运动员和使用本研究中使用的阻力IMT装置进行呼吸肌训练的优秀游泳运动员在呼吸变化方面没有明显差异；到目前为止，所涉及的原因机制尚不清楚。
Because the anomalous respiratory characteristics of competitive swimmers have been suggested to be due to inspiratory muscle work, the respiratory muscle and pulmonary function of 30 competitively trained swimmers was assessed at the beginning and end of an intensive 12-week swim training (ST) program. Swimmers (n = 10) combined ST with either inspiratory muscle training (IMT) set at 80% sustained maximal inspiratory pressure (SMIP) with progressively increased work-rest ratios until task failure for 3-days per week (ST + IMT) or ST with sham-IMT (ST + SHAM-IMT, n = 10), or acted as controls (ST only, ST, n = 10). Measures of respiratory and pulmonary function were assessed at the beginning and end of the 12 week study period. There were no significant differences (P > 0.05) in respiratory and pulmonary function between groups (ST + IMT, ST + SHAM-IMT and ST) at baseline and at the end of the 12 week study period. However, within all groups significant increases (P < 0.05) were observed in a number of respiratory and pulmonary function variables at the end of the 12 week study, such as maximal inspiratory and expiratory pressure, inspiratory power output, forced vital capacity, forced expiratory and inspiratory volume in 1-s, total lung capacity and diffusion capacity of the lung. This study has demonstrated that there are no appreciable differences in terms of respiratory changes between elite swimmers undergoing a competitive ST program and those undergoing respiratory muscle training using the flow-resistive IMT device employed in the present study; as yet, the causal mechanisms involved are undefined.