Siegmund G P, Edwards M R, Moore K S, Tiessen D A, Sanderson D J, McKenzie D C
Biomechanics Laboratory, School of Human Kinetics, University of British Columbia, Vancouver, British Columbia, Canada V6T 1Z1.
J Appl Physiol (1985). 1999 Jul;87(1):233-42. doi: 10.1152/jappl.1999.87.1.233.
Ventilation and locomotion coupling (entrainment) has been observed and described in rowers during incremental exercise protocols but not during simulated race conditions. The purpose of this descriptive study was to examine ventilation and locomotion entrainment on a breath-by-breath and stroke-by-stroke basis in varsity male rowers during a maximal 2,000-m ergometer test. Eight of eleven rowers entrained ventilation at integral multiples of stroke rate (1:1, 2:1, or 3:1) for at least 120 consecutive seconds, with a 2:1 entrainment pattern being most common. In all 2:1-entrained subjects, inspiration occurred at catch and finish and expiration occurred during the latter portions of drive and recovery. In entrained and unentrained breaths from all rowers, peak flow rates and tidal volumes varied depending on when the breath was initiated during the stroke cycle. Entrained rowers made use of these differences and breathed in a pattern by which they avoided initiating breaths that resulted in reduced tidal volumes. The present data indicated that ventilation was impaired at stroke finish and not at catch, as hypothesized by some previous researchers. Ventilation also appeared to be subordinate to consistent locomotive patterns under race conditions.
在递增运动方案中，划船运动员的通气与运动耦合（同步）已被观察到并加以描述，但在模拟比赛条件下尚未有相关研究。本描述性研究的目的是在男子大学划船运动员进行的最大强度2000米测力计测试中，逐次呼吸和逐次划桨地检查通气与运动同步情况。11名划船运动员中有8名以划桨频率的整数倍（1:1、2:1或3:1）同步通气至少连续120秒，其中2:1的同步模式最为常见。在所有以2:1同步的受试者中，吸气发生在抓水和结束时，呼气发生在划水和恢复的后半段。在所有划船运动员的同步呼吸和非同步呼吸中，峰值流速和潮气量取决于呼吸在划桨周期中的起始时间。同步的划船运动员利用了这些差异，并以一种避免引发导致潮气量减少的呼吸模式进行呼吸。目前的数据表明，正如一些先前研究人员所假设的那样，通气在划桨结束时受损，而在抓水时未受损。在比赛条件下，通气似乎也服从于一致的运动模式。
