Table 1 Effects of respiratory muscle endurance training (RMET) on characteristics of the swimmers. Data are means (±standard deviation)
|
Before RMET |
After RMET |
| RMET group |
Control group |
RMET group |
Control group |
| Body mass (kg) |
70.4 (11.7) |
70.7 (4.5) |
69.8 (11.6) |
69.8 (3.5) |
| Fat mass (%) |
18.5 (9.2) |
21.9 (11.7) |
18.3 (8.6) |
21.4 (10.9) |
| FVC (%) |
125 (12) |
130 (15) |
128 (12) * |
129 (17) |
| FEV1 (%) |
116 (11) |
121 (11) |
117 (9) |
119 (6) |
| PEF (%) |
102 (12) |
104 (14) |
104 (10) |
100 (12) |
| MVV12s (%) |
99 (16) |
103 (16) |
113 (13) * |
112 (16) |
| Field swim times on 50-m (s) |
27.7 (2.2) |
28.1 (1.8) |
28.1 (2.1) |
28.8 (1.8) * |
| Field swim times on 200-m (s) |
136.0 (10.2) |
137.5 (11.4) |
136.7 (8.4) |
138.1 (8.8) |
| Competition swim times on 50-m (s) |
27.4 (2.3) |
27.8 (2.2) |
26.6 (2.1) * |
27.6 (2.1) |
| Competition swim times on 200-m (s) |
130.7 (12.8) |
135.4 (11.4) |
125.5 (8.8) * |
126.9 (7.7) |
| IPS50m |
634 (49) |
662 (41) |
611 (58) |
630 (66) * |
| IPS200m |
632 (36) |
654 (76) |
641 (41) |
636 (53) |
| HR50m (bpm) |
164 (12) |
162 (14) |
167 (8) |
166 (11) |
| HR200m (bpm) |
176 (11) |
177 (6) |
173 (10) |
171 (4) |
| ∆La50m (mmol·L-1) |
5.8 (2.4) |
6.3 (1.8) |
4.8 (1.8) |
5.3 (1.6) * |
| ∆La200m (mmol·L-1) |
8.1 (2.5) |
9.1 (1.6) |
6.9 (1.8) |
7.9 (3.2) |
| Chest expansion (cm) |
7.4 (1.4) |
7.7 (1.7) |
8.2 (1.2) * |
7.3 (1.5) |
denotes p < 0.05 between before and after training.FVC: forced vital capacity; FEV: forced expiratory volume in one second; PEF: peak expiratory flow; MVV: maximum voluntary ventilation; IPS: international point scores for the 50- and 200-m experimental trials (i.e., simulated competitions); HR: heart rate; ∆La: delta lactate concentration (i.e., lactate concentration measured 3 min after the end of trials minus lactate concentration at rest).
