TABLE 2.
Hamstring muscle localized bioimpedance measurements.
| Parameter mean (SD) 95% CI for mean lower-bound upper-bound |
24 h pre-race (1) | Post-race (2) | 48 h post-race (3) | F p-value a partial η2 |
SE p-value (2-1) b |
SE p-value (3-1) b |
SE p-value (3-2) b |
|---|---|---|---|---|---|---|---|
| Left hamstring | |||||||
| R-left (Ω) | 50.41 (5.30) 47.35 53.47 | 50.44 (6.06) 46.95 53.94 | 52.14 (7.05) 48.07 56.20 | 1.673 0.229 0.218 |
0.986 1.000 |
0.912 0.241 |
1.389 0.733 |
| Xc-left (Ω) | 13.67 (2.11) 12.45 14.89 | 14.72 (1.72) 13.73 15.72 | 13.64 (2.41) 12.24 15.03 | 7.482 0.008 0.555 |
0.301 0.012 |
0.438 1.000 |
0.394 0.049 |
| PA-left (°) | 15.31 (2.91) 13.64 16.99 | 16.44 (2.52) 14.98 17.89 | 14.85 (3.04) 13.10 16.60 | 12.102 0.001 0.669 |
0.315 0.010 |
0.460 0.995 |
0.383 0.003 |
| Right hamstring | |||||||
| R-right (Ω) | 52.93 (7.18) 48.78 57.07 | 52.26 (5.91) 48.84 55.67 | 52.85 (5.76) 49.52 56.18 | 0.263 0.773 0.042 |
1.068 1.000 |
1.236 1.000 |
1.013 1.000 |
| Xc-right (Ω) | 14.82 (2.47) 13.39 16.25 | 15.90 (2.56) 14.42 17.38 | 14.21 (2.77) 12.61 15.82 | 8.516 0.005 0.587 |
0.296 0.009 |
0.436 0.562 |
0.469 0.010 |
| PA-right (°) | 15.91 (3.60) 13.83 17.99 | 17.05 (3.03) 15.30 18.80 | 15.19 (3.18) 13.35 17.02 | 13.867 0.001 0.698 |
0.321 0.011 |
0.511 0.532 |
0.421 0.002 |
| Left and right hamstrings | |||||||
| R (Ω) | 51.67 (6.10) 48.15 55.19 | 51.35 (5.69) 48.06 54.64 | 52.49 (6.27) 48.87 56.11 | 0.528 0.603 0.081 |
0.899 1.000 |
0.926 1.000 |
1.120 0.979 |
| Xc (Ω) | 14.25 (2.25) 12.95 15.55 | 15.31 (2.09) 14.10 16.52 | 13.93 (2.55) 12.45 15.40 | 11.015 0.002 0.647 |
0.254 0.003 |
0.424 1.000 |
0.404 0.013 |
| PA (°) | 15.62 (3.24) 13.74 17.49 | 16.75 (2.74) 15.16 18.33 | 15.02 (3.07) 13.25 16.79 | 16.631 0.000 0.735 |
0.292 0.004 |
0.470 0.684 |
0.381 0.002 |
Data on 14 non-elite 2019 Barcelona Marathon runners. (1), 24 h pre-marathon race. (2), Immediately post-marathon race. (3), 48 h post-marathon race.
SD, standard deviation; CI, coefficient interval; F, the ratio of the variance between the groups to the variance within the groups; P, statistical significance; partial η2 , partial Eta square.
a
Repeated measures ANOVA test.
b
Bonferroni test.
R, resistance; Xc, reactance; PhA, phase angle.