Inspiratory muscle training effects on cycling during acute hypoxic exposure
Research output: Contribution to journal › Article › peer-review
Methods: Seventeen healthy adult men undertook four weeks of inspiratory muscle training (n = 8) or four weeks of sham inspiratory muscle training (n = 9). Subjects completed four fixed- intensity (100 watts) and duration (10 minutes) cycle ergometry tests. Two were undertaken breathing normoxic ambient air, and two breathing a hypoxic gas mixture (14.6% oxygen, balance nitrogen). One normoxic and hypoxic test occurred before, and one after, inspiratory muscle training.
Results: Inspiratory muscle training increased maximal inspiratory mouth pressure by 21 ± 16 cmH2O. Arterial oxygen saturation and its ratio to minute ventilation also increased after inspiratory muscle training during hypoxic exercise from 83 ± 4% to 86 ± 3% (approximately 3%) and 2.95 ± 0.48 to 3.52 ± 0.54 %.l.min-1(approximately 21%), respectively. In addition, minute ventilation, and carbon dioxide output fell by 12-13% after inspiratory muscle training during hypoxic exercise.
Discussion: Inspiratory muscle training reduced the physiological demand of moderate intensity exercise during acute hypoxic, but not normoxic, exercise. It may therefore be of benefit in adults exercising in a hypoxic environment.
|Number of pages||6|
|Journal||Aerospace Medicine and Human Performance|
|Publication status||Published - 1 Jun 2017|
- Inspiratory muscle training effects
Rights statement: The final version of record can be located online at doi:http://dx.doi.org/10.3357/AMHP.4780.2017 © Aerospace Medical Association, Alexandria, VA.
Accepted author manuscript (Post-print), 348 KB, PDF document