The Effect of Inspiratory Muscle Warm-Up on VO2 Kinetics during Submaximal Rowing.

Mati Arend,Jarek Mäestu,Jaak Talts,Jana Kivastik

doi:10.3390/sports9030042

Mati Arend, Jarek Mäestu + Show 2 more

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https://doi.org/10.3390/sports9030042

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Abstract

The aim of the study was to investigate the effect of an inspiratory muscle warm-up on the VO2 kinetics during submaximal intensity ergometer rowing. Ten competitive male rowers (age 23.1 ± 3.8 years; height 188.1 ± 6.3 cm; body mass 85.6 ± 6.6 kg) took part in this investigation. A submaximal constant intensity (90% PVO2max) rowing test to volitional exhaustion was carried out twice with the standard rowing warm-up (Test 1) and with the standard rowing warm-up with additional specific inspiratory muscle warm-up of two sets of 30 repetitions at 40% maximal inspiratory pressure (Test 2). We found a significant correlation between time constant (τ1) and the VO2 value at 400 s in Test 1 (r = 0.78; p < 0.05); however, no correlation was found between those parameters in Test 2. In addition, we found a positive association between VO2max from the incremental rowing test and τ1 from Test 1 (r = 0.71; p < 0.05), whereas VO2 did not correlate with τ1 from Test 2. Adding inspiratory muscle warm-up of 40% maximal inspiratory pressure to regular rowing warm-up had no significant effect on oxygen consumption kinetics during submaximal rowing tests.

Highlights

Previous research has shown that the fatigue of respiratory muscles may decrease exercise performance [2,3,4,5]
The mechanisms which contribute to the performance gains after inspiratory muscle (IM) training and inspiratory muscle warm-up (IM-WU) are still unclear [5,9]
To our bestwith knowledge, is the first study to compare oxygen consumption k during high intensity rowing differentthis warm-up protocols—the first with the regular ics during high intensity rowing with different warm-up protocols—the first with the ular rowing warm-up and the second with the regular rowing warm-up with the a inspiratory muscle warm-up (IM-WU)

Summary

Introduction

Previous research has shown that the fatigue of respiratory muscles may decrease exercise performance [2,3,4,5]. Respiratory muscles have a unique resilience to moderate exercise intensities, they are susceptible to fatigue when exercising at intensities over 80% of maximal oxygen uptake for prolonged periods of time [6,7]. To delay inspiratory muscle (IM) fatigue, a specific inspiratory muscle training and warm-up (IM-WU) (with 50% and 40% from maximal inspiratory pressure, respectively) has been shown to improve athletic performance in different sport disciplines [8,9,10,11]. One of the proposed mechanisms has been the improvement in oxygen uptake (VO2 ) kinetics [12]

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