Table 1. Means [95% Confidence Intervals] ± (Standard Deviation) over the 400 m for speed (m.s-1), stroke rate (strokes.min-1), stroke length (m.stroke-1) and jerk cost (g2.s-2x10-3) according to the performance groups. |
|
Speed (m.s-1) |
SR (strokes.min-1) |
SL (m.stroke-1) |
JC (g2.s-2x10-3) |
| Group
1 |
1.00[0.97;1.04]
± (0.11) *d |
64.6[62.6;66.6]
± (6.28) b |
1.08[1.02;1.13]
± (0.16) ‡d |
11.3[9.87;12.7]
± (4.41)b |
| Group
2 |
1.19[1.17;1.21]
± (0.06) *d |
67.1[64.9;69.2]
± (6.55)†c |
1.27[1.22;1.32]
± (0.06) b |
13.4[11.2;15.7]
± (6.91)§c |
| Group
3 |
1.27[1.25;1.29]
± (0.06) *d |
71.5[69.0;74.0]
± (7.74) a |
1.30[1.25;1.35]
± (0.15)‡c |
17.1[14.6;19.6]
± (7.84) b |
| Group
4 |
1.38[1.35;1.42]
± (0.10) |
73.0[70.0;76.0]
± (9.30) |
1.39[1.32;1.45]
± (0.20) |
19.1[16.1;22.0]
± (9.18) |
|
SR: stroke rate; SL: stroke length; JC: jerk cost *, †, ‡, § indicate swimming speed, stroke rate, stroke length and jerk cost, respectively, as significantly lower than those of the following performance group. |
a, b, c, d indicate the magnitude of the differences as trivial, small, medium and large, respectively. |
|