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Table 1 Characteristics of the participants, mean (± SD) or n (%)

From: Perimenopausal women show modulation of excitatory and inhibitory neuromuscular mechanisms

  EP (n = 25) LP (n = 38) P-value
Age, y 51.0 (± 2.0) 51.6 (± 1.8) 0.222
Height, cm 163.8 (± 0.1) 164.2 (± 0.1) 0.810
BMI 25.4 (± 4.4) 25.3 (± 3.7) 0.916
FSH (IU/L) 17.32 (± 4.79) 48.25 (± 22.28)  < 0.001
E2 (nmol/L) 0.374 (± 0.257) 0.249 (± 0.200) 0.035
Mean cycle length 36.8 (± 22.2) a 65.8 (± 41.7)b 0.001
Mean bleeding days 6.0 (± 1.4) a 5.3 (± 1.5)b 0.098
Mean non-bleeding days 34.7 (± 31.6) a 65.2 (± 49.1)b 0.006
Physical activity    0.652
 Low 4 (16) 6 (16)  
 Moderate 7 (28) 7 (18)  
 High 14 (56) 25 (66)  
Stimulus intensity (%) 83.6 (± 7.7) 84.5 (± 9,6) 0.691
  1. P-values tested with independent samples t-test, physical activity level with chi square test. BMI = body mass index, cm = centimeter, E2 = 17β-estradiol, FSH = follicle-stimulating hormone, IU/L = international units per liter, nmol/L = nanomoles per liter, SD = standard deviation, y = year. an = 23, bn = 34.