Knee joint laxity does not moderate the relationship between quadriceps strength and physical function in knee osteoarthritis patients: A cross-sectional study

Isokinetic testing of muscle strength in older adults with knee osteoarthritis: An integrative review

“…The relative reliability of isokinetic dynamometry in measuring knee strength in the presence of knee OA has been characterized using intraclass correlation coefficients (ICCs). Test-retest reliability for knee isokinetic strength measurement has been noted as strong with ICCs 0.72 in all studies [11,13,17,19,20,29,32,53,62,72,106,107,116,130] except that of Carpenter et al [32], who reported a range of ICCs from 0.60 to 0.95. Despite strong test-retest reliability, strength values may significantly increase in novice individuals after familiarization with isokinetic measurement suggesting a learning effect [95].…”

“…No difference in pain between test speeds. Altubasi et al (2018) [13] Jordanians with knee OA (n = 160; mean age = 63.6 y).…”

“…Functional measurements have been associated with knee strength measurement utilizing isokinetic dynamometers. Knee strength has been identified as inversely associated with functional ambulation measures including the Get Up and Go Test [13,46,102,124,126], Timed Up and Go Test [26,49], 6 minute Walk Test [49,134], 100-meter walk test [123,124], 20-meter walk test [18], gait speed [92,93,122], and walking time [67]. Difficulty rising from a chair has been associated with lower knee extensor strength in females [18].…”

“…Stair ambulation time tends to be inversely correlated to knee strength [26,46,49,53,67,102,122]. Knee extensor strength has been associated with lower levels of impairment on the Knee Injury and Osteoarthritis Outcome Score (KOOS) [94], Western Ontario McMaster Universities Osteoarthritis Index (WOMAC) [13,14,51,102,109,123,124,126] and Short Form-36 [92] physical function subscales. There may [40] or may not [63,88] be an association between knee strength and proprioception.…”