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Table 2 Intraclass correlation coefficients (ICC’sagreement), Standard error of measurement (SEM) and smallest detectable change (SDD) of the hip abductor and hip adductor strength test

From: Evaluation of hip abductor and adductor strength in the elderly: a reliability study

  ICC [95%CI] SEM [unit of measure] SDD [%] ICC [95%CI] SEM [unit of measure] SDD [%] ICC [95%CI] SEM [unit of measure] SDD [%]
All (N = 38) Fallers (N = 19) Non-Fallers (N = 19)
ABD
 MVIS 0.94 [0.87–0.97] 0.12 32% 0.84 [0.72–0.94] 0.15 51% 0.97 [0.94–0.99] 0.08 18%
 RFG 0.94 [0.91–0.97] 1.05 51% 0.85 [0.70–0.93] 1.12 81% 0.96 [0.92–0.98] 1.01 37%
ADD
 MVIS 0.90 [0.84–0.95] 0.17 39% 0.90 [0.72–0.96] 0.16 44% 0.87 [0.79–0.94] 0.19 35%
 RFG 0.94 [0.90–0.97] 0.77 48% 0.93 [0.84–0.97] 0.72 67% 0.93 [0.84–0.98] 0.83 39%
  1. ABD Abduction ADD Adduction, MVIS Maximum Voluntary Isometric Strength (N/kg), RFG Rate of Force Generation (N/kg/s), CI Confidence Interval