Quadriceps performance under activation of foot dorsal extension in healthy volunteers: an interventional cohort study

Table 1 EMG activity data in RMS (μV) (n = 35)

RMS (μV)	– TA		+ TA		Difference		SRM	p
45° knee flexion	m	s	m	s	m	s
m. biceps femoris	14.2	9.4	12.4	6.4	−1.8	8.9	−0.20	0.922
m. tibialis anterior	7.9	3.0	170.8	80.3	163.0	80.6	2.02	<0.001
m. vastus medialis	32.4	24.3	53.7	32.4	21.3	15.3	1.39	<0.001
m. rectus femoris	9.4	5.1	18.9	15.3	9.5	13.4	0.71	<0.001
90° knee flexion
m. biceps femoris	23.0	13.4	28.9	16.3	5.9	6.1	0.97	<0.001
m. tibialis anterior	26.5	30.1	231.9	92.2	205.4	94.3	2.18	<0.001
m. vastus medialis	124.9	71.6	152.8	78.7	37.1	34.3	1.08	<0.001
m. rectus femoris	77.8	56.4	135.3	107.7	59.0	66.0	0.89	<0.001

Legend: RMS = root mean square of the electromyogram (EMG) in μV, m = arithmetic mean, s = standard deviation, SRM = standardized response mean (m of the difference(s) of the difference), p = type I error of the Wilcoxon test comparing the RMS with (+TA) to without dorsal foot extension (−TA)

ISSN: 1471-2474