BACKGROUND: Lower extremity muscle mass, strength, power, and physical performance are critical determinants of independent functioning in later life. Isokinetic dynamometers are becoming very common in assessing different features of muscle strength, in both research and clinical practice; however, reliability studies are still needed to support the extended use of those devices. OBJECTIVE: The purpose of this study is to assess the test-retest reliability of knee and ankle isokinetic and isometric strength testing protocols in a sample of older healthy subjects, using a new and untested isokinetic multi-joint evaluation system. METHODS: Sixteen male and fourteen female older adults (mean age 65.2 ± 4.6 years) were assessed in two testing sessions. Each participant performed a randomized testing procedure that includes different isometric and isokinetic tests for knee and ankle joints. RESULTS: All participants concluded the trial safety and no subject reported any discomfort throughout the overall assessment. Coefficients of correlation between measures were calculated showing moderate to strong effects among all test-retest assessments and paired-sample t test showed only one significant difference (p<0.05) in the maximal isokinetic bilateral knee flexion torque. CONCLUSIONS: The multi-joint evaluation system for the assessment of knee and ankle isokinetic and isometric strength provided reliable test-retest measures in healthy older adults. LEVEL OF EVIDENCE: Ib.
BACKGROUND: Lower extremity muscle mass, strength, power, and physical performance are critical determinants of independent functioning in later life. Isokinetic dynamometers are becoming very common in assessing different features of muscle strength, in both research and clinical practice; however, reliability studies are still needed to support the extended use of those devices. OBJECTIVE: The purpose of this study is to assess the test-retest reliability of knee and ankle isokinetic and isometric strength testing protocols in a sample of older healthy subjects, using a new and untested isokinetic multi-joint evaluation system. METHODS: Sixteen male and fourteen female older adults (mean age 65.2 ± 4.6 years) were assessed in two testing sessions. Each participant performed a randomized testing procedure that includes different isometric and isokinetic tests for knee and ankle joints. RESULTS: All participants concluded the trial safety and no subject reported any discomfort throughout the overall assessment. Coefficients of correlation between measures were calculated showing moderate to strong effects among all test-retest assessments and paired-sample t test showed only one significant difference (p<0.05) in the maximal isokinetic bilateral knee flexion torque. CONCLUSIONS: The multi-joint evaluation system for the assessment of knee and ankle isokinetic and isometric strength provided reliable test-retest measures in healthy older adults. LEVEL OF EVIDENCE: Ib.
Authors: Joshua M Drouin; Tamara C Valovich-mcLeod; Sandra J Shultz; Bruce M Gansneder; David H Perrin Journal: Eur J Appl Physiol Date: 2003-09-24 Impact factor: 3.078
Authors: T Brock Symons; Anthony A Vandervoort; Charles L Rice; Tom J Overend; Greg D Marsh Journal: J Aging Phys Act Date: 2004-10 Impact factor: 1.961
Authors: S van Grinsven; R E H van Cingel; C J M Holla; C J M van Loon Journal: Knee Surg Sports Traumatol Arthrosc Date: 2010-01-13 Impact factor: 4.342
Authors: Nathaniel D M Jenkins; Samuel L Buckner; Haley C Bergstrom; Kristen C Cochrane; Jacob A Goldsmith; Terry J Housh; Glen O Johnson; Richard J Schmidt; Joel T Cramer Journal: Exp Gerontol Date: 2014-07-11 Impact factor: 4.032
Authors: A Trombetti; K F Reid; M Hars; F R Herrmann; E Pasha; E M Phillips; R A Fielding Journal: Osteoporos Int Date: 2015-07-21 Impact factor: 4.507
Authors: Gisela Sole; Jonas Hamrén; Stephan Milosavljevic; Helen Nicholson; S John Sullivan Journal: Arch Phys Med Rehabil Date: 2007-05 Impact factor: 3.966
Authors: Stefano Gobbo; Francesco Favro; Valentina Bullo; Lucia Cugusi; Andrea Di Blasio; Alessandro Bortoletto; Danilo Sales Bocalini; Andrea Gasperetti; Andrea Ermolao; Marco Bergamin Journal: Front Physiol Date: 2022-08-08 Impact factor: 4.755
Authors: Jose A Parraca; José Carmelo Adsuar; Francisco Javier Domínguez-Muñoz; Sabina Barrios-Fernandez; Pablo Tomas-Carus Journal: Biology (Basel) Date: 2022-05-24