The Effect of NeuroMuscular Electrical Stimulation on Quadriceps Strength and Knee Function in Professional Soccer Players: Return to Sport after ACL Reconstruction

Table 1

Characteristics of individuals from group A and B.

	Group A	Group B	Level of significance
Number of participants	40	40	^∗∗𝑃>0.05
Age (years)
Range	17–29	17–29	^∗𝑃>0.05
Mean	22.4	21.3
SD	5.78	5.67
Operated knee
Right	26	23	^∗∗𝑃>0.05
Left	14	17
Height (cm)
Range	171–193	170–186	^∗𝑃>0.05
Mean	180.3	176.5
SD	7.54	8.11
Weight (kg)
Range	71–80	63–100	^∗𝑃>0.05
Mean	73.8	70.9
SD	5.76	7.12
BMI (kg/m^2)
Range	19.2–25.8	20.3–28.9	^∗𝑃>0.05
Mean	22.4	23.4
SD	4.22	3.03
Muscle strength (N)
Operated	578.4–701.3	567.5–689.9	^∗∗𝑃>0.05
Range	645.9	648.6
Mean	34.6	38.6
SD
Nonoperated
Range	821.4–879.8	831.5–889.7
Mean	840.1	840.4
SD	23.4	27.9
Duration of career (how long soccer players practice their discipline) in years
Range	3.4–10.5	3.3–8.5	^∗𝑃>0.05
Mean	5.4	4.8
SD	2.46	1.89

∗the 𝑡-test, **the χ ²-test.