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Table 4 Measures of pre and post six weeks resistance training program and required sample size for 80% power

From: Safety and feasibility of a home-based six week resistance training program in juvenile idiopathic arthritis

Measures of pre and post 6 weeks training Pre training Post training Required sample size for 80% power
Inflammation (Likert scale) (n = 7) 1.0 ± 1.2 0.1 ± 0.4 29
Fluid (Likert scale) (n = 7) 1.0 ± 1.2 0.3 ± 0.5 26
Synovial thickening (Likert scale) (n = 7) 0.6 ± 1.1 0.6 ±0.8 Effect size not large enough
Synovitis (Likert scale) (n = 7) 0.6 ± 0.8 0.1 ± 0.4 46
Vastus lateralis thickness (cm) (n = 7) 3.0 ± 0.6 3.2 ± 0.7* 7
Biceps brachii thickness (cm) (n = 5) 2.6 ± 0.4 2.9 ± 0.5 8
Leg extension strength (n.m) (n = 7) 111.6 ± 42.9 105.0 ± 50.5 22
Elbow flexion strength (n.m) (n = 7) 28.3 ± 11.3 30.1 ± 18.0 275
Disability index from CHAQ (0 to 3 continuous scale) (n = 7) 0.4 ± 0.7 0.2 ± 0.3 47
Health status from CHAQ (Likert scale) (n = 7) 0.4 ± 0.6 0.2 ± 0.2 131
  1. * Significant difference from pre training.
  2. cm = centimetres.
  3. n.m = newton metres.