Table 2. Effects of stretching on changes in isometric muscle force and electromyographic activity at the flexed position.
| Dependant variable |
Streching method |
Pre |
Post 0 min |
Post 20 min |
Post 60 min |
| Isometric muscle force at the flexed position (Nm) |
SS |
70.4 ± 16.4 |
59.3 ± 15.6 * |
58.6 ± 14.6 * |
58.5 ± 15.0 * |
| Relative change |
- |
-16.1 ± 8.7% |
-16.5 ± 11.5% |
-16.8 ± 10.0% |
| DS |
70.6 ± 12.8 |
60.6 ± 13.5 * |
59.3 ± 13.4 * |
58.0 ± 14.0 * |
| Relative change |
- |
-14.5 ± 7.7% |
-16.5 ± 8.8% |
-18.3 ± 10.3% |
| SS-DS |
67.3 ± 15.5 |
58.5 ± 15.9 * |
57.1 ± 15.1 * |
56.6 ± 15.6 * |
| Relative change |
- |
-13.7 ± 7.7% |
-15.5 ± 6.6% |
-16.5 ± 8.2% |
| DS-SS |
69.5 ± 16.9 |
59.1 ± 17.7 * |
56.8 ± 17.4 * |
59.5 ± 17.4 * |
| Relative change |
- |
-16.0 ± 9.0% |
-19.3 ± 7.9% |
-15.1 ± 9.9% |
| RMS values (medial hamstrings) (µV) |
SS |
257.6 ± 83.1 |
204.9 ± 58.8 * |
193.0 ± 67.8 * |
199.0 ± 80.2 * |
| Relative change |
- |
-17.6 ± 16.2% |
-23.9 ± 15.4% |
-22.1 ± 21.4% |
| DS |
254.4 ± 107.2 |
200.4 ± 70.4 * |
212.8 ± 93.4 * |
208.0 ± 83.2 * |
| Relative change |
- |
-19.3 ± 15.1% |
-15.8 ± 17.7% |
-16.2 ± 23.0% |
| SS-DS |
252.9 ± 83.4 |
200.7 ± 73.2 * |
214.2 ± 91.5 |
203.2 ± 77.2 * |
| Relative change |
- |
-19.3 ± 18.5% |
-13.6 ± 23.3% |
-17.9 ± 22.7% |
| DS-SS |
246.8 ± 88.1 |
210.5 ± 87.3 * |
209.5 ± 85.6 |
201.3 ± 70.1 * |
| Relative change |
- |
-13.1 ± 26.0% |
-12.9 ± 27.4 |
-16.8 ± 18.2% |
| RMS values (lateral hamstrings) (µV) |
SS |
233.6 ± 108.0 |
218.3 ± 75.3 |
203.1 ± 65.5 |
198.2 ± 76.2 |
| Relative change |
- |
-1.6 ± 23.4% |
-8.1 ± 23.0% |
-9.4 ± 24.8% |
| DS |
206.0 ± 68.3 |
198.2 ± 74.4 |
167.3 ± 44.3 * |
162.9 ± 53.1 * |
| Relative change |
- |
-3.1 ± 22.8% |
-14.5 ± 22.7% |
-19.6 ± 16.7% |
| SS-DS |
201.9 ± 39.5 |
194.4 ± 55.4 |
180.4 ± 46.0 |
191.0 ± 54.1 |
| Relative change |
- |
-4.5 ± 15.3% |
-10.2 ± 18.9% |
-4.8 ± 22.0% |
| DS-SS |
209.6 ± 71.3 |
179.5 ± 56.0 * |
177.9 ± 67.1 * |
192.6 ± 69.4 |
| Relative change |
- |
-12.0 ± 16.0% |
-14.8 ± 19.0% |
-7.0 ± 15.7% |
RMS, root mean square; SS, static stretching; DS, dynamic stretching; SS-DS, static stretching followed by dynamic stretching; DS-SS, dynamic stretching followed by static stretching. Values are expressed as the mean ± standard deviation.*p < 0.05 compared with the pre-stretching value.
