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Table 3 Results of handgrip strength measurement

From: Hand grip strength and fatigability: correlation with clinical parameters and diagnostic suitability in ME/CFS

 

Females

Males

HC, n = 36

ME/CFS, n = 61

 

CRF, n = 18

 

HC, n = 30

ME/CFS, n = 44

 

Fmax1

28.2 (6.25)

18.1 (6.68)

p < 0.0001

18.9 (6.73)

p < 0.0001

p < 0.0001

45.8 (10.2)

31.2 (10.4)

p < 0.0001

Fmax2

28.7 (5.73)

16.0 (7.14)

p < 0.0001

17.2 (6.00)

48.3 (9.58)

29.2 (10.9)

p < 0.0001

Fmean1

25.6 (5.87)

14.6 (6.09)

p < 0.0001

15.5 (6.34)

p < 0.0001

p < 0.0001

41.8 (9.66)

26.3 (9.91)

p < 0.0001

Fmean2

25.9 (5.46)

12.9 (6.24)

p < 0.0001

14.3 (5.74)

44.2 (9.32)

24.5 (10.4)

p < 0.0001

Fatigue Ratio 1

1.105 (0.09)

1.300 (0.297)

p < 0.0001

1.261 (0.21)

p = 0.0001

1.097 (0.04)

1.213 (0.18)

p = 0.0006

p = 0.0012

Fatigue Ratio 2

1.113 (0.07)

1.299 (0.25)

p < 0.0001

1.223 (0.13)

p = 0.0004

1.097 (0.05)

1.216 (0.17)

Recovery Ratio

1.0 (0.077)

0.87 (0.19)

p < 0.0001

0.96 (0.26)

p = 0.0020

1.1 (0.14)

0.92 (0.14)

p < 0.0001

Comparison of first and second measurement

Fmax1

28.2

p = 0.3295 

18.1

p < 0.0001

18.9

p = 0.0053

45.8

p = 0.0048

32.2

p = 0.0019

Fmax2

28.7

16.0

17.2

 

48.3

 

29.2

Fmean1

25.6

p = 0.3537

14.6

p < 0.0001

15.5

p = 0.0376

41.8

p = 0.0057

26.3

p = 0.0022

Fmean2

25.9

12.9

14.3

 

44.2

 

24.5

  1. Mean value of handgrip strength in kg and ratios with standard deviation in brackets; p-value refers to comparison with healthy controls (Mann–Whitney-Test) or, in the second compartment of the table, to comparison of both sessions (Paired t-test), respectively