TABLE 3.
Mean ± SD of the physiological and performance responses during training trials. N = 22 (9 F, 13 M).
| Variable | Training trial | Power | ||
|---|---|---|---|---|
| Continuous | Intermittent | ρ | Hedges’ g | |
| Peak-V̇O2 (ml·kg−1·min−1) | 55.4 ± 5.1 | 53.1 ± 5.3 | <0.149 | 0.44 [small] |
| %Peak-V̇O2 (%V̇O2peak) | 100.7 ± 3.1 | 96.4 ± 4.2* | 0.001 | 1.14 [large] |
| MPeak-V̇O2 (ml·kg−1·min−1) | — | 50.6 ± 4.9 | ||
| %MPeak-V̇O2 (%V̇O2peak) | — | 91.8 ± 4.2 | ||
| Peak HR (b·min−1) | 183.2 ± 7.4 | 182.2 ± 10.4 | 0.725 | 0.11 [trivial] |
| Peak [La−] (mmol·l−1) | 7.8 ± 2.7 | 7.8 ± 2.8 | 0.839 | 0.00 [trivial] |
| RPE (0–10 units) | 8.9 ± 0.9 | 9.4 ± 0.8 | 0.051 | 0.58 [medium] |
| Distance (m) | 315.9 ± 63.3 | 1,277.3 ± 638.1* | <0.001 | 2.08 [very large] |
| tLim (s) | 256.2 ± 60.3 | 1,013.6 ± 496.6* | <0.001 | 2.10 [very large] |
| t@VT₂ (s) | 144.1 ± 78.8 | 448.1 ± 211.1* | <0.001 | 1.87 [very large] |
| %t@VT₂ (%) | 53.4 ± 20.1 | 45.8 ± 17.3 | 0.194 | 0.40 [small] |
| t@90%V̇O2peak (s) | 127.5 ± 77.1 | 321.9 ± 208.7* | <0.001 | 1.21 [large] |
| %t@90%V̇O2peak (%) | 47.3 ± 19.6 | 34.1 ± 20.9* | 0.040 | 0.64 [medium] |
| Ap (ml·kg−1·min−1) | 42.7 ± 5.3 | 42.2 ± 3.8 | 0.758 | 0.11 [trivial] |
| TDp(s) | 12.6 ± 2.2 | 11.8 ± 2.3 | 0.297 | 0.35 [small] |
| τ p (s) | 26.5 ± 7.5 | 25.9 ± 9.4 | 0.838 | 0.07 [trivial] |
| O2InicialDef (ml) | 1,658.5 ± 372.2 | 1,652.0 ± 601.2 | 0.967 | 0.01 [trivial] |
| ASC (ml·min−1) | 266.2 ± 178.4 | |||
| ASC (ml·kg−1·min−1) | 4.0 ± 2.6 | |||
| TDSC(s) | 132.5 ± 20.5 | |||
| τ sc (s) | 39.6 ± 26.4 | |||
Peak-V̇O2 and %Peak-V̇O2, maximal V̇O2 in the test and corresponding percentage to V̇O2peak; MPeak-V̇O2 and %MPeak-V̇O2, average value of the maximal V̇O2 achieved in each repetition of the set and corresponding percentage to V̇O2peak; Peak [La−] and Peak HR, maximal blood lactate concentration and HR, respectively; RPE, rate of perceived exertion; Distance and tLim, maximal distance and time performed by the swimmers; t@VT₂ and t@90%V̇O2peak, time spent by the swimmers with V̇O2 values above the VT₂ and 90% of the V̇O2peak, and corresponding percentage values for the total duration of each test, respectively; A, TD and τ, amplitude, time delay and time constant parameters of the V̇O2K, for the primary (p) and slow component phase (Asc); *, statistical differences for the continuous test (p < 0.05). The observed sample power for the differences between CT and IT100 with regards to %Peak-V̇O2, Distance, tLim, t@VT2, and t@90% V̇O2peak are 96, 100, 100, 100, and 98%, respectively. For the other variables, The differences between CT and IT100 did not attain statistical significance, nor sufficient sample power (i.e., <80%).