The contribution of leg press and knee extension strength and power to physical function in people with knee osteoarthritis: A cross-sectional study

Tevald, Michael A.; Murray, Aisling; Bressollette, L; Lai, Kafai; Sohn, David H.; Pietrosimone, Brian

doi:10.1016/j.knee.2016.08.010

Cited by 20 publications

(36 citation statements)

References 38 publications

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“…The fastest of the three attempts was used for further analysis. Reliability of the TUG has been reported to range between .95 and .97 ICC in our study population …”

Section: Methodsmentioning

confidence: 63%

“…Although closed‐chain assessment of lower limb strength, rather than open‐chain measures of knee extensor strength, should provide greater insight regarding functional limitations, we could not identify a universal/clear advantage of closed kinetic chain tests compared to open kinetic chain measures …”

Section: Discussionmentioning

confidence: 85%

“…Their models including covariates explained 33% to 52% of the variance in physical performance . In a knee OA group with moderate impairments but relatively low strength values, Tevald et al reported that bilateral leg press power measured on a pneumatic machine was a better predictor of physical function than knee extensor peak power and strength . Surprisingly, knee extension power of the uninvolved leg explained the variance in physical function better than power of the involved more painful limb.…”

Section: Discussionmentioning

confidence: 98%

“…The link between diverse strength measures and functional performance is dependent on various contributing factors, as well as different means of assessment (power rig, pneumatic exercise machines, bilateral measurements), and different testing velocity and assessment at different ranges of loads …”

Section: Discussionmentioning

confidence: 99%

“…Moreover, our heterogeneous findings could have been influenced by age‐ and disability‐dependent relationships between force and power with regard to functional performance . We measured each leg individually on an isokinetic leg press (in closed kinetic chain) with a comparatively low constant velocity of 0.1 m/s, while others used higher longitudinal velocities 0.4 to 0.7 m/s or radial velocities 60°/s in open kinetic chain on different machines . Available data indicate in particular that power at low relative intensity is more closely associated with walking performance than power at high relative intensity .…”

Section: Discussionmentioning

confidence: 99%

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Relationship Between Strength Parameters and Functional Performance Tests in Patients With Severe Knee Osteoarthritis

Bily

Šarabon

Löefler

et al. 2019

PM&R

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Background Decreased leg muscle strength is a major determinant of reduced function in patients with knee osteoarthritis (OA). The identification of a strength parameter that is best correlated with functional performance is important for monitoring rehabilitation results. Objective To determine which muscle strength measurements show the highest correlation with functional capacity in patients with severe knee OA shortly before total knee arthroplasty (TKA). Design Cross‐sectional exploratory study. Setting Outpatient rehabilitation department at a university teaching hospital. Patients The sample included 75 patients (51 female) scheduled for primary TKA, recruited through multistage sampling. Methods or Interventions Independent variables were peak isometric, isokinetic concentric, and eccentric leg extensor strength measured on the leg press, as well as peak isometric knee extensor strength measured on the strength chair. Two multiple regression analyses were performed, one including all strength measures and the other including all of the strength ratios. Pearson correlation coefficients were calculated between the strength measures and functional test scores. Main Outcome Measurements Dependent variables were the Timed Up and Go Test (TUG) and the Stair Test (ST). Results The regression analysis including all strength measures could explain 11.9% of the variance of the TUG (P = .068, not significant [NS]) and 21.5% of the variance of the ST (P = .009, significant). The regression model for the strength ratios explained 11.8% of the variance of the TUG (P = .090, NS) and 6.3% of the ST (P = .217, NS). Conclusions Although univariate analysis confirmed significant correlations between strength measurements and functional tests, multiple regression analysis revealed a higher predictive value for the ST than for the TUG. The use of both muscle strength tests and performance‐based function tests is advisable to evaluate functional impairments of patients with knee OA. Level of Evidence III

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“…The fastest of the three attempts was used for further analysis. Reliability of the TUG has been reported to range between .95 and .97 ICC in our study population …”

Section: Methodsmentioning

confidence: 63%

Section: Discussionmentioning

confidence: 85%

Section: Discussionmentioning

confidence: 98%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

See 3 more Smart Citations

Relationship Between Strength Parameters and Functional Performance Tests in Patients With Severe Knee Osteoarthritis

Bily

Šarabon

Löefler

et al. 2019

PM&R

View full text Add to dashboard Cite

show abstract

Preliminary Therapeutic Knee Band Development for Knee Osteoarthritis (KOA) Relief in the Elderly: A Pilot Study

Gong

Liu

et al. 2018

Advances in Human Factors in Wearable Technologies and Game Design

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Jumping Joints: The Complex Relationship Between Osteoarthritis and Jumping Mechanography

et al. 2019

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We investigated the relationship between lower limb osteoarthritis (OA) and muscle strength and power (assessed by jumping mechanography) in UK community-dwelling older adults. We recruited 249 older adults (144 males, 105 females). OA was assessed clinically at the knee according to ACR criteria and radiographically, at the knee and hip, using Kellgren and Lawrence grading. Two-footed jumping tests were performed using a Leonardo Mechanography Ground Reaction Force Platform to assess maximum muscle force, power and Esslinger Fitness Index. Linear regression was used to assess the relationship between OA and jumping outcomes. Results are presented as β (95% confidence interval). The mean age of participants was 75.2 years (SD 2.6). Males had a significantly higher maximum relative power during lift off (mean 25.7 W/kg vs. 19.9 W/kg) and maximum total force during lift off (mean 21.0 N/kg vs. 19.1 N/kg) than females. In adjusted models, we found significant associations in males between clinical knee OA and maximum relative power [− 6.00 (CI − 9.10, − 2.94)] and Esslinger Fitness Index [− 19.3 (− 29.0, − 9.7)]. In females, radiographic knee OA was associated with total maximum power [− 2.0 (− 3.9, − 0.1)] and Esslinger Fitness Index [− 8.2 (− 15.9, − 0.4)]. No significant associations were observed for maximum total force. We observed significant negative associations between maximum relative power and Esslinger Fitness Index and clinical knee OA in males and radiographic knee OA in females. We have used novel methodology to demonstrate relationships between muscle function and OA in older adults.

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The contribution of leg press and knee extension strength and power to physical function in people with knee osteoarthritis: A cross-sectional study

Cited by 20 publications

References 38 publications

Relationship Between Strength Parameters and Functional Performance Tests in Patients With Severe Knee Osteoarthritis

Relationship Between Strength Parameters and Functional Performance Tests in Patients With Severe Knee Osteoarthritis

Preliminary Therapeutic Knee Band Development for Knee Osteoarthritis (KOA) Relief in the Elderly: A Pilot Study

Jumping Joints: The Complex Relationship Between Osteoarthritis and Jumping Mechanography

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