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Table 1 Participant characteristics per group at BDC-5

From: Head-down tilt bed rest with or without artificial gravity is not associated with motor unit remodeling

Variable Control AG1 AG2 Group difference p valuesα
n 8 8 8  
Age (years) 32.3 ± 7.4 33.5 ± 10.9 34.0 ± 10.1 p = 0.932
Sex 6 men; 2 women 5 men; 3 women 5 men; 3 women p = 0.829*
Height (cm) 177 ± 7 172 ± 8 174 ± 11 p = 0.598
Body mass (kg) 79.4 ± 12.7 71.8 ± 10.2 71.4 ± 4.5 p = 0.203
Body mass index (kg/m2) 25.2 ± 2.6 24.0 ± 1.7 23.6 ± 1.6 p = 0.273
ADM
 CMAP (mV) 13.0 ± 2.2 13.6 ± 3.1 12.8 ± 1.9 p = 0.817
 MUNIX 215 ± 46 196 ± 40 208 ± 45 p = 0.700
 MUSIX (µV) 62 ± 11 71 ± 14 64 ± 13 p = 0.410
TA
 CMAP (mV) 10.0 ± 2.1 10.4 ± 2.5 9.0 ± 1.3 p = 0.390
 MUNIX 234 ± 48 237 ± 66 219 ± 37 p = 0.760
 (MUSIX; µV) 43 ± 5 45 ± 5 43 ± 9 p = 0.769
  1. ADM abductor digiti minimi, TA tibialis anterior, CMAP compound muscle action potential, MUNIX motor unit number index, MUSIX motor unit size index; αone-way ANOVA; *Chi-square test. Data are mean (± SD)