Table 1

Means and standard deviations (below the means in parentheses) for the Sol, MG, and LG H-reflex maximum amplitudes in millivolts (mV), latency (ms), and H/M ratio during lying and standing with the ankle in neutral (N), dorsiflexion (DF), and plantarflexion (PF)

H-reflex parameters

Ankle Positions

Muscle and posture


Sol

MG

LG


Lying

Standing

Lying

Standing

Lying

Standing


Amplitude

N

7.25*†

(3.35)

4.28*§‡

(2.03)

2.06*†

(1.20)

1.38*§‡

(0.85)

1.50*†

(0.70)

1.15*§‡

(0.67)


DF

2.47†

(2.63)

1.96§

(2.18)

0.60†

(0.39)

0.53§

(0.60)

0.47†

(0.34)

0.49§

(0.51)


PF

5.95

(3.37)

6.40‡

(2.88)

1.76

(1.19)

2.65‡

(1.52)

1.38

(0.89)

1.81‡

(0.97)


H/M

N

0.51*†

(0.17)

0.38*§‡

(0.19)

0.42*†

(0.30)

0.20*§‡

(0.11)

0.28*†

(0.13)

0.18*§‡

(0.08)


DF

0.22†

(0.18)

0.19§

(0.18)

0.17†

(0.14)

0.08§

(0.08)

0.18†

(0.04)

0.11§

(0.12)


PF

0.40

(0.24)

0.60‡

(0.27)

0.32

(0.25)

0.39‡

(0.15)

0.22

(0.09)

0.32‡

(0.14)


Latency

N

30.2

(2.3)

30.6

(2.3)

29.3

(2.2)

29.3

(2.3)

29.1

(2.1)

28.9

(2.4)


DF

30.4

(2.5)

30.9

(2.3)

29.3

(2.3)

29.3

(2.3)

29.0

(2.3)

29.0

(2.6)


PF

30.5

(2.3)

30.8

(2.3)

29.1

(2.2)

29.1

(2.4)

28.8

(2.4)

28.7

(2.1)


* indicates significant differences between lying and standing for each muscle with the ankle in neutral position for both amplitude and H/M ratio parameters.

† indicates significant differences between dorsiflexion and neutral position for each muscle while lying for both amplitude and H/M ratio parameters.

§ indicates significant differences between dorsiflexion and neutral position for each muscle while standing for both amplitude and H/M ratio parameters.

‡ indicates a significant difference between plantarflexion and neutral position for each muscle while standing for both amplitude and H/M ratio parameters.

Alrowayeh et al. BMC Neurology 2011 11:65   doi:10.1186/1471-2377-11-65

Open Data