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Table 1 Participant characteristics

From: Mechanisms of quadriceps muscle weakness in knee joint osteoarthritis: the effects of prolonged vibration on torque and muscle activation in osteoarthritic and healthy control subjects

Characteristic Osteoarthritis group Control group
Age (years) 63.0 (9.7) 62.4 (10.5)
Height (m) 1.69 (0.10) 1.70 (0.07)
Mass (kg) 77.4 (16.9) 70.0 (9.1)
Female 8 (53.3%) 8 (53.3%)
Dominant limb tested 9 (60.0%) 9 (60.0%)
Radiographic knee osteoarthritisa   
   Grade II 4 (26.7%) -
   Grade III 6 (40.0%) -
   Grade IV 5 (33.3%) -
   Medial compartment 13 (86.7%) -
   Lateral compartment 9 (60.0%) -
   Patellofemoral compartment 11 (73.3%) -
   Bilateral knee osteoarthritis 6 (40.0%) -
  1. Data presented as mean (standard deviation) or n (%). No significant between-group differences were found for age, height or mass (all P ≥0.186). aMore symptomatic knee in patients with bilateral osteoarthritis.