Test-retest reliability of knee extensor rate of velocity and power development in older adults using the isotonic mode on a Biodex System 3 dynamometer

Autor: Stijn Van Driessche, Benedicte Vanwanseele, Evelien Van Roie, Christophe Delecluse
Jazyk: angličtina
Rok vydání: 2018
Předmět:
PROTOCOL
Male
Muscle Strength Dynamometer
Aging
Research Validity
Time Factors
Muscle Physiology
Muscle Functions
Intraclass correlation
Physiology
Knees
lcsh:Medicine
Isometric exercise
Knee Joints
medicine.disease_cause
Weight-bearing
Weight-Bearing
MUSCLE STRENGTH
0302 clinical medicine
Elderly
REPRODUCIBILITY
Medicine and Health Sciences
Medicine
lcsh:Science
Musculoskeletal System
Reliability (statistics)
Aged
80 and over
Multidisciplinary
Physics
Isotonic
Classical Mechanics
Muscle Analysis
Research Assessment
Multidisciplinary Sciences
Bioassays and Physiological Analysis
FORCE DEVELOPMENT
Physical Sciences
Science & Technology - Other Topics
Legs
Female
Anatomy
Range of motion
Research Article
medicine.medical_specialty
AGE-RELATED DIFFERENCES
FLEXION
Research and Analysis Methods
SPORTS-MEDICINE
03 medical and health sciences
Motion
Physical medicine and rehabilitation
ISOKINETIC DYNAMOMETER
Osmotic Pressure
Isometric Contraction
Pressure
Humans
Tonicity
Knee
Isotonic Contraction
Muscle Strength
LEG EXTENSORS
Aged
Science & Technology
Dynamometer
CONTRACTIONS
business.industry
Limbs (Anatomy)
lcsh:R
Reproducibility of Results
Biology and Life Sciences
030229 sport sciences
Joints (Anatomy)
Standard error
Torque
Age Groups
People and Places
Population Groupings
lcsh:Q
business
030217 neurology & neurosurgery
Zdroj: PLoS ONE, Vol 13, Iss 5, p e0196838 (2018)
PLoS ONE
ISSN: 1932-6203
Popis: Isotonic testing and measures of rapid power production are emerging as functionally relevant test methods for detection of muscle aging. Our objective was to assess reliability of rapid velocity and power measures in older adults using the isotonic mode of an isokinetic dynamometer. Sixty-three participants (aged 65 to 82 years) underwent a test-retest protocol with one week time interval. Isotonic knee extension tests were performed at four different loads: 0%, 25%, 50% and 75% of maximal isometric strength. Peak velocity (pV) and power (pP) were determined as the highest values of the velocity and power curve. Rate of velocity (RVD) and power development (RPD) were calculated as the linear slopes of the velocity- and power-time curve. Relative and absolute measures of test-retest reliability were analyzed using intraclass correlation coefficients (ICC), standard error of measurement (SEM) and Bland-Altman analyses. Overall, reliability was high for pV, pP, RVD and RPD at 0%, 25% and 50% load (ICC: .85 - .98, SEM: 3% - 10%). A trend for increased reliability at lower loads seemed apparent. The tests at 75% load led to range of motion failure and should be avoided. In addition, results demonstrated that caution is advised when interpreting early phase results (first 50ms). To conclude, our results support the use of the isotonic mode of an isokinetic dynamometer for testing rapid power and velocity characteristics in older adults, which is of high clinical relevance given that these muscle characteristics are emerging as the primary outcomes for preventive and rehabilitative interventions in aging research. ispartof: PLOS ONE vol:13 issue:5 ispartof: location:United States status: published
Databáze: OpenAIRE
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