Table 1 Demographic and variables related to the biomechanics of test performance. P-values are provided for differences between age groups and for differences between included (n = 76) and excluded (n = 20) subjects
Younger adults Mean (SE) | Older adults Mean (SE) | Younger vs. older adults * | Included vs. excluded * | |
|---|---|---|---|---|
N | 41 | 35 | ||
Age (years) | 32.8 (2.6) | 67.0 (1.7) | < 0.001 | 0.8 |
Height (cm) | 173.8 (1.6) | 168.4 (2.2) | 0.054 | 0.5 |
Weight (kg) | 73.3 (2.3) | 72.0 (3.0) | 0.7 | 0.7 |
BMI (kg/m2) | 24.3 (0.5) | 25.3 (0.6) | 0.2 | 0.6 |
Back Extension Strength (Nm) | 241.4 (15.3) | 207.9 (14.5) | 0.1 | 0.4 |
Grip Strength (kg) | 39.6 (2.7) | 32.3 (3.4) | 0.1 | 0.7 |
Fatigue (BORG Scale 0–10) | 5.1 (0.5) | 3.6 (0.4) | 0.028 | 0.9 |
IPAQ TPA (MET/week) | 5234 (1133) | 10,701 (2425) | 0.038 | 0.7 |
EMG Velocity ex (rad/s) | −0.48 (0.02) | −0.44 (0.02) | 0.2 | 0.5 |
EMG Velocity con (rad/s) | 0.57 (0.02) | 0.58 (0.02) | 0.6 | 0.9 |
EMG ROM (rad) | 0.55 (0.02) | 0.54 (0.02) | 0.5 | 0.9 |