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Table 1 Mean strength recordings (± SD) and reliability coefficients for hallux flexor muscle strength measurement

From: Intra-rater reliability of hallux flexor strength measures using the Nintendo Wii Balance Board

 

Wii board day 1 (Mean ± SD)

Wii board day 2 (Mean ± SD)

ICC (3, 3)

Spearman’s ρ*

95 % CI

Systematic bias (CI)

Width of 95 % LoA

% Errorb

SEM

MDC

Prop biasa,c

Fixed biasc

Toe strength (kg)

8.12 ± 3.86

8.28 ± 3.80

0.982

0.933

0.96 to 0.99

None

2.01

12

0.5

1.4

No

No

  1. SD standard deviation, ICC intra-class coefficients, LoA limits of agreement, SEM standard error of measurement, MDC minimal detectable change
  2. aProp Bias = Proportional Bias
  3. b% Error = 0.5*Width of 95 % LOA/[(MeanDay1 + MeanDay2)/2]*100
  4. *All correlations were p < 0.001
  5. cProp and fixed bias were determined from ordinary least products analysis
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