TY - JOUR
T1 - The effect of exercise training with an additional inspiratory load on inspiratory muscle fatigue and time-trial performance
AU - McEntire, Serina J.
AU - Smith, Joshua R.
AU - Ferguson, Christine S.
AU - Brown, Kelly R.
AU - Kurti, Stephanie P.
AU - Harms, Craig A.
N1 - Publisher Copyright:
© 2016 Elsevier B.V.
PY - 2016/8/1
Y1 - 2016/8/1
N2 - The purpose was to determine the effect of moderate-intensity exercise training (ET) on inspiratory muscle fatigue (IMF) and if an additional inspiratory load during ET (ET+IL) would further improve inspiratory muscle strength, IMF, and time-trial performance. 15 subjects were randomly divided to ET (n = 8) and ET+IL groups (n = 7). All subjects completed six weeks of exercise training three days/week at ~70%V˙O2peak for 30 min. The ET+IL group breathed through an inspiratory muscle trainer (15% PImax) during exercise. 5-mile, and 30-min time-trials were performed pre-training, weeks three and six. Inspiratory muscle strength increased (p < 0.05) for both groups to a similar (p > 0.05) extent. ET and ET+IL groups improved (p < 0.05) 5-mile time-trial performance (~10% and ~18%) and the ET+IL group was significantly faster than ET at week 6. ET and ET+IL groups experienced less (p < 0.05) IMF compared to pre-training following the 5-mile time-trial. In conclusion, these data suggest ET leads to less IMF, ET+IL improves inspiratory muscle strength and IMF, but not different than ET alone.
AB - The purpose was to determine the effect of moderate-intensity exercise training (ET) on inspiratory muscle fatigue (IMF) and if an additional inspiratory load during ET (ET+IL) would further improve inspiratory muscle strength, IMF, and time-trial performance. 15 subjects were randomly divided to ET (n = 8) and ET+IL groups (n = 7). All subjects completed six weeks of exercise training three days/week at ~70%V˙O2peak for 30 min. The ET+IL group breathed through an inspiratory muscle trainer (15% PImax) during exercise. 5-mile, and 30-min time-trials were performed pre-training, weeks three and six. Inspiratory muscle strength increased (p < 0.05) for both groups to a similar (p > 0.05) extent. ET and ET+IL groups improved (p < 0.05) 5-mile time-trial performance (~10% and ~18%) and the ET+IL group was significantly faster than ET at week 6. ET and ET+IL groups experienced less (p < 0.05) IMF compared to pre-training following the 5-mile time-trial. In conclusion, these data suggest ET leads to less IMF, ET+IL improves inspiratory muscle strength and IMF, but not different than ET alone.
KW - Exercise training
KW - Inspiratory load
KW - Inspiratory muscle fatigue
KW - Respiratory muscle strength
KW - Time-trial performance
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U2 - 10.1016/j.resp.2016.05.001
DO - 10.1016/j.resp.2016.05.001
M3 - Article
C2 - 27195511
AN - SCOPUS:84970023352
SN - 1569-9048
VL - 230
SP - 54
EP - 59
JO - Respiratory Physiology and Neurobiology
JF - Respiratory Physiology and Neurobiology
ER -