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Table 1 Physical characteristics of subjects.

From: Skeletal muscle gene expression in response to resistance exercise: sex specific regulation

Variables Males (n = 8) Females (n = 8) p value
Age (yrs) 24.7 ± 0.8 22.7 ± 0.8 ns
Weight (kg) 76.9 ± 5.2 60.0 ± 5.2 0.02
Height (cm) 177.8 ± 3.3 156.2 ± 3.3 < 0.0001
BMI (kg/m2) 24.2 ± 1.7 23.7 ± 1.7 ns
1RM Trained Arm (kg) 16.7 ± 0.8 10.4 ± 0.8 < 0.0001
1RM Control Arm (kg) 12.6 ± 0.5 6.5 ± 0.5 < 0.0001
ISO Trained Arm (kg) 61.5 ± 3.4 29.2 ± 3.4 < 0.0001
ISO Control Arm (kg) 55.4 ± 2.9 25.3 ± 2.9 < 0.0001
CSA Trained Arm (cm2) 6949.3 ± 595.2 5837.1 ± 595.2 ns
CSA Control Arm (cm2) 6314.8 ± 553.3 5544 ± 553.3 ns
VOL Trained Arm (cm3) 642757.5 ± 53086.4 541118.8 ± 53086.4 ns
VOL Control Arm (cm3) 584923.6 ± 50638.3 516896.5 ± 50638.3 ns
Δ1RM relative to control 0.42 (0.29) 0.55 (0.50) 0.03
Δ ISO relative to control 0.10 (0.20) 0.13 (0.07) ns
Δ CSA relative to control 0.08 (0.05) 0.05 (0.12) 0.08
Δ VOL relative to control 0.10 (0.09) 0.07 (0.10) ns
  1. Note: Anthropometric and muscle phenotypic measurements are presented as mean ± SEM and sex differences were tested by t-test.
  2. Δ relative to control, relative improvement induced by RE training, calculated as (trained-control)/control; the numbers are median (interquartile range) and sex differences were tested by Wilcoxon Rank Sum Test.
  3. 1RM: 1 repetition maximum; ISO: Isometric muscle strength; CSA: Arm whole muscle cross-sectional area measured by MRI; VOL: Arm whole muscle volume.