Table 2.
Effects of respiratory muscle endurance training (RMET) on the respiratory endurance test parameters for the swimmers. Data are mean s (± standard deviation).
| Before RMET | After RMET | |||
|---|---|---|---|---|
| RMET group | Control group | RMET group | Control group | |
| Breathing duration (min) | 16.0 (1.7) | 14.1 (3.2) | 24.6 (4.4)*† | 17.0 (1.8) |
| VEmax (L·min-1) | 111.6 (25.1) | 104.7 (9.9) | 124.1 (24.8) *† | 109.1(7.6) * |
| VTmax(L·min-1) | 3.7 (.5) | 3.8 (.1) | 3.6 (.7) | 3.9 (.3) |
| fRmax (cycle·min-1) | 29.6 (4.3) | 27.0 (2.5) | 34.2 (3.7) *† | 28.1 (3.4) |
| ΔLa (mmol·L-1) | -.2 (.8) | -.7 (.7) | -.5 (.4) | -.7 (.8) |
VEmax: maximal minute ventilation during the respiratory endurance test; VTmax: maximal tidal volume during the respiratory endurance test; fRmax: maximal breathing frequency during the respiratory endurance test; DLa: delta lactate concentration (i.e., lactate concentration measured 3 min after the end of trials minus lactate concentration at rest).
* denotes p < 0.05 between before and after RMET.
† denotes p < 0.05 between the RMET group and controls.