Table 1. General characteristics of the participants and differences between the experimental and control groups. Data are reported as means (±standard deviation) or frequency.
|
Experimental 1
(n = 44) |
Experimental 2
(n = 51) |
Control
(n = 45) |
pa |
| Age (years) |
8.5 (.8) |
8.4 (.8) |
8.4 (.6) |
- |
| Gender (boys/ girls) |
22/ 22 |
23/ 28 |
21/ 24 |
.890 |
| Body mass (kg) |
33.8 (7.5) |
33.7 (7.7) |
36.6 (11.5) |
.229 |
| Body height (m) |
1.33 (.06) |
1.32 (.06) |
1.33 (.08) |
.843 |
| Body mass index (kg·m-2) |
19.0 (3.4) |
19.1 (3.4) |
20.4 (4.4) |
.124 |
| Extracurricular sport (yes/ no)b |
33/ 11 |
28/ 23 |
25/ 20 |
.082 |
| Pre-intervention score (cm) |
16.8 (5.4) |
16.8 (5.5) |
15.3 (5.2) |
.320 |
| Hamstring extensibility (low/ normal) |
15/ 29 |
15/ 36 |
18/ 27 |
.551 |
a Significance level from the chi squared test for the ratio of gender, extracurricular sport, and pre-intervention hamstring extensibility categories, and from the one-way analysis of variance for body mass, body height, body mass index, and pre-intervention scores of the sit-and-reach test;
b Children that regularly participated (yes) or not (no) at least twice per week in extracurricular sport activities.
