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Clinical Trial Details — Status: Completed

Administrative data

NCT number NCT05109871
Other study ID # SP0558
Secondary ID
Status Completed
Phase N/A
First received
Last updated
Start date September 20, 2021
Est. completion date August 2, 2022

Study information

Verified date May 2022
Source Liverpool University Hospitals NHS Foundation Trust
Contact n/a
Is FDA regulated No
Health authority
Study type Interventional

Clinical Trial Summary

This study will investigate the reliability and validity of an inline 'pull-type' dynamometer for measuring peak knee extensor torque. For the reliability study, healthy volunteers will be assessed by two assessors (inter-rater) at the index testing session, with testing repeated by one assessor one week later (test-retest). Validity will be investigated against isometric electromechanical dynamometry (gold standard) in patients following anterior cruciate ligament (ACL) reconstruction.


Description:

This is a prospective, cross sectional study using a within-participant, repeated measures design. The inter-rater and test-retest reliability of the KForce Link (pull-type dynamometer) will be determine using 50 healthy subjects. The validity of the KForce Link will be determined using 52 post-operative ACL reconstruction patients against the gold standard of isometric electromechanical dynamometry (Cybex). All testing will be performed isometrically with the knee positioned at 60 degrees knee flexion. Assessors and participants will be blinded to the scores until testing is complete.


Recruitment information / eligibility

Status Completed
Enrollment 102
Est. completion date August 2, 2022
Est. primary completion date August 1, 2022
Accepts healthy volunteers Accepts Healthy Volunteers
Gender All
Age group 18 Years and older
Eligibility Inclusion Criteria: - Participant is willing and able to give informed consent for participation in the study. - Male or Female, aged 18 years or above. - No contraindications to maximal force testing (see exclusion criteria). - For the ACL reconstruction participant cohort: diagnosed with ACL injury that was managed with ACL reconstruction surgery, with or without additional meniscal surgery. If medicated, stable dose of current regular medication for at least 4 weeks prior to study entry. - For the healthy control participant cohort: no current or previous history of significant lower limb injury, or a history of previous minor injury that is symptomatic at the time of recruitment. No previous lower limb surgery. No course of medication, whether prescribed or over the counter, other than vitamins and mineral supplements or, for females, oral contraceptives. Exclusion Criteria: - Unable to provide written consent to study participation, or there are contraindications to maximal force testing, including the following: - History of chronic disease or disorder that may put the participants at risk because of participation in the study including non-united fractures, epilepsy, cardiac insufficiency, severe peripheral vascular disease, aneurysms, anticoagulant therapy, recent (<3 months) radiotherapy or chemotherapy, long term steroid use (>3 months), pregnancy, neurological disorders (e.g., Parkinson's disease), skin conditions at point of force testing, severe osteoporosis, malignancy, rheumatoid arthritis. - Conditions or symptoms that may influence the result of the study, or the participant's ability to participate in the study including pain, limited range of motion, knee effusion, or anaemia.

Study Design


Related Conditions & MeSH terms


Intervention

Other:
KForce Link
Traction (pull-type) dynamometer

Locations

Country Name City State
United Kingdom Aintree University Hospital Liverpool Merseyside

Sponsors (1)

Lead Sponsor Collaborator
Liverpool University Hospitals NHS Foundation Trust

Country where clinical trial is conducted

United Kingdom, 

References & Publications (8)

Almeida GPL, Albano TR, Melo AKP. Hand-held dynamometer identifies asymmetries in torque of the quadriceps muscle after anterior cruciate ligament reconstruction. Knee Surg Sports Traumatol Arthrosc. 2019 Aug;27(8):2494-2501. doi: 10.1007/s00167-018-5245-3. Epub 2018 Oct 30. — View Citation

Bohannon RW, Bubela DJ, Wang YC, Magasi SR, Gershon RC. Adequacy of belt-stabilized testing of knee extension strength. J Strength Cond Res. 2011 Jul;25(7):1963-7. doi: 10.1519/JSC.0b013e3181e4f5ce. — View Citation

Hansen EM, McCartney CN, Sweeney RS, Palimenio MR, Grindstaff TL. Hand-held Dynamometer Positioning Impacts Discomfort During Quadriceps Strength Testing: A Validity and Reliability Study. Int J Sports Phys Ther. 2015 Feb;10(1):62-8. — View Citation

Kelln BM, McKeon PO, Gontkof LM, Hertel J. Hand-held dynamometry: reliability of lower extremity muscle testing in healthy, physically active,young adults. J Sport Rehabil. 2008 May;17(2):160-70. — View Citation

Sinacore JA, Evans AM, Lynch BN, Joreitz RE, Irrgang JJ, Lynch AD. Diagnostic Accuracy of Handheld Dynamometry and 1-Repetition-Maximum Tests for Identifying Meaningful Quadriceps Strength Asymmetries. J Orthop Sports Phys Ther. 2017 Feb;47(2):97-107. doi: 10.2519/jospt.2017.6651. — View Citation

Stark T, Walker B, Phillips JK, Fejer R, Beck R. Hand-held dynamometry correlation with the gold standard isokinetic dynamometry: a systematic review. PM R. 2011 May;3(5):472-9. doi: 10.1016/j.pmrj.2010.10.025. Review. — View Citation

Suzuki T. Reliability of measurements of knee extensor muscle strength using a pull-type hand-held dynamometer. J Phys Ther Sci. 2015 Mar;27(3):967-71. doi: 10.1589/jpts.27.967. Epub 2015 Mar 31. — View Citation

Whiteley R, Jacobsen P, Prior S, Skazalski C, Otten R, Johnson A. Correlation of isokinetic and novel hand-held dynamometry measures of knee flexion and extension strength testing. J Sci Med Sport. 2012 Sep;15(5):444-50. doi: 10.1016/j.jsams.2012.01.003. Epub 2012 Mar 15. — View Citation

Outcome

Type Measure Description Time frame Safety issue
Primary Peak knee extensor torque measured in Newton metres per kg (Nm/kg) Peak knee extensor force (N) multiplied by lever length (m), normalised to body weight (kg) 12-156 Weeks
Secondary Pain during testing on a numerical rating scale (0-10) Numerical rating scale of pain with 0 indicating no pain and 10 indicating worst pain possible 12 weeks
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