The Association Between Submaximal Quadriceps Force Steadiness and the Knee Adduction Moment During Walking in Patients With Knee Osteoarthritis

Osteoarthritis 2012 year in review: rehabilitation and outcomes

“…Standing balance was related to physical function, but this relationship was complex and dependent on knee extensor strength level Semanik (2011) 40 Evaluate the correlation between the Yale Physical Activity Survey (YPAS) scores and objective accelerometer measures of time spent on physical activity Weak correlations (0.31e0.36) between the YPAS scores and objective accelerometry Senden (2011) 41 Investigate the suitability of Acceleration-based gait analysis (AGA) for measuring function in patients with gonarthrosis AGA was found to be of clinical relevance in identifying and monitoring patients with symptomatic gonarthrosis in orthopaedic practice Sorensen (2011) 42 Investigate the relationship between quadriceps force steadiness and KAM during walking in patients with knee OA No statistically significant association between submaximal isometric quadriceps force steadiness and peak knee external adduction moments during walking was found add significantly to current knowledge about outcomes in OA and so, were not included.…”

Muscle Function during Selected Weight-Bearing Activities in Adults with Knee Osteoarthritis- A Narrative Overview

“…To this end more stringent research designs with clear inclusion and exclusion criteria are desirable to tease out possible pathogenic or confounding factors in gait and electromyographic studies such as disease stage [35,44] , the presence of instability [44] , effusion [45] , proprioception abnormalities [47] , excess body weight [76,77] fatigue [78] , instability [79] , stiffness [80] , inflammatory cytokines [81] , gamma-loop dysfunction [82] , or related muscle forces at the knee during gait [83] . Whether rate of force development, muscle endurance and/or muscle power, muscle imbalance, muscle force steadiness or neuromuscular efficiency are more profound functional determinants than strength [13,31,41,80,[84][85][86] should also be examined. Which interventions produce the best functional outcomes and why should be examined as well to better understand the muscular mechanisms underpinning functional weightbearing activities in patients with varying degrees of knee joint osteoarthritis.…”

The Association Between Knee Extensor Force Steadiness, Force Accuracy, and Mobility in Older Adults Who Have Fallen

“…The first 6 TTS (a total of 18 trials) were not included in the data analysis as they were considered practice trials to ensure that participants understood the task, and to avoid the potential contribution of early motor learning effects reported by others. 15,23 MFS and MFA measures were collected on the weaker leg, as determined by the MVIC force. MFS was characterized by the coefficient of variation (CV= standard deviation (SD)/mean•100), an accepted method for quantifying normalized force variability.…”