Table 3. Effects of stretching on changes in isometric muscle force and electromyographic ctivity at the horizontal position.
Dependant variable
Streching method
Pre
Post 0 min
Post 20 min
Post 60 min
Isometric muscle force at the horizontal position (Nm)
SS
86.8 ± 17.1
77.6 ± 15.2 *
79.8 ± 13.7 *
79.4 ± 14.9 *
Relative change
-
-10.3 ± 7.2%
-7.4 ± 7.3%
-7.9 ± 9.5%
DS
86.0 ± 13.5
77.8 ± 15.2 *
78.0 ± 14.1 *
77.5 ± 15.0 *
Relative change
-
-9.9 ± 5.7%
-9.4 ± 7.7%
-10.2 ± 7.9%
SS-DS
86.0 ± 17.7
77.1 ± 14.2 *
77.4 ± 13.1 *
76.3 ± 14.7 *
Relative change
-
-9.8 ± 6.9%
-9.1 ± 7.4%
-10.6 ± 8.7%
DS-SS
85.4 ± 14.1
77.9 ± 14.0 *
77.1 ± 14.3 *
76.5 ± 13.9 *
Relative change
-
-8.8 ± 6.3%
-9.8 ± 7.2%
-10.3 ± 7.8%
RMS values (medial hamstrings) (μV)
SS
324.4 ± 99.3
292.9 ± 93.6
282.2 ± 104.8
283.9 ± 116.0
Relative change
-
-8.5 ± 16.2%
-10.4 ± 25.3%
-10.9 ± 26.9%
DS
314.8 ± 97.8
284.4 ± 77.7
272.6 ± 92.6
270.4 ± 101.3
Relative change
-
-5.3 ± 28.0%
-11.0 ± 24.3%
-9.4 ± 33.8%
SS-DS
312.2 ± 99.0
295.1 ± 87.7
289.4 ± 92.2
272.0 ± 90.9 *
Relative change
-
-3.8 ± 17.4%
-6.4 ± 13.6%
-11.2 ± 18.0%
DS-SS
313.8 ± 121.9
294.9 ± 108.5
291.9 ± 100.7
290.3 ± 107.4
Relative change
-
-1.7 ± 25.0%
0 ± 32.7%
-4.0 ± 20.2%
RMS values (lateral hamstrings) (μV)
SS
263.4 ± 115.4
247.0 ± 114.3
238.7 ± 111.9 *
215.9 ± 77.7
Relative change
-
-6.4 ± 17.4%
-9.5 ± 14.5%
-13.0 ± 22.2%
DS
231.7 ± 88.5
210.1 ± 79.5
197.3 ± 65.6 *
209.3 ± 75.9
Relative change
-
-8.1 ± 16.5%
-10.8 ± 20.6%
-7.8 ± 16.1%
SS-DS
236.7 ± 83.5
222.4 ± 87.9
216.4 ± 73.2
214.4 ± 82.2
Relative change
-
-6.5 ± 12.8%
-6.2 ± 16.2%
-8.5 ± 16.1%
DS-SS
237.4 ± 91.0
236.6 ± 106.4
216.7 ± 90.9
213.6 ± 90.5
Relative change
-
+4.2 ± 45.1%
-5.6 ± 28.2%
-7.7 ± 25.1%
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.