Effects of age and knee osteoarthritis on the modular control of walking: A pilot study

Autor: Robert A. Siston, Elena J Caruthers, Ajit M.W. Chaudhari, Rebekah R Koehn, Sarah A. Roelker, Laura C. Schmitt
Rok vydání: 2021
Předmět:
Knee Joint
Physiology
Knees
Pilot Projects
Walking
Knee Joints
Osteoarthritis
Electromyography
Elderly
Skeletal Joints
Medicine and Health Sciences
Muscle activity
Musculoskeletal System
Gait
Multidisciplinary
medicine.diagnostic_test
Middle Aged
Osteoarthritis
Knee
Biomechanical Phenomena
Bioassays and Physiological Analysis
Physiological Parameters
Legs
Medicine
Female
Anatomy
Neuromuscular control
Muscle Electrophysiology
Research Article
Adult
medicine.medical_specialty
Science
Research and Analysis Methods
Pelvis
Young Adult
Physical medicine and rehabilitation
medicine
Adults
Humans
Muscle
Skeletal
Skeleton
Aged
Hip
Biological Locomotion
business.industry
Electrophysiological Techniques
Body Weight
Significant difference
Biology and Life Sciences
medicine.disease
Walking Speed
Preferred walking speed
Age Groups
Younger adults
Body Limbs
People and Places
Population Groupings
business
Zdroj: PLoS ONE, Vol 16, Iss 12, p e0261862 (2021)
PLoS ONE
ISSN: 1932-6203
Popis: Background Older adults and individuals with knee osteoarthritis (KOA) often exhibit reduced locomotor function and altered muscle activity. Identifying age- and KOA-related changes to the modular control of gait may provide insight into the neurological mechanisms underlying reduced walking performance in these populations. The purpose of this pilot study was to determine if the modular control of walking differs between younger and older adults without KOA and adults with end-stage KOA. Methods Kinematic, kinetic, and electromyography data were collected from ten younger (23.5 ± 3.1 years) and ten older (63.5 ± 3.4 years) adults without KOA and ten adults with KOA (64.0 ± 4.0 years) walking at their self-selected speed. Separate non-negative matrix factorizations of 500 bootstrapped samples determined the number of modules required to reconstruct each participant’s electromyography. One-way Analysis of Variance tests assessed the effect of group on walking speed and the number of modules. Kendall rank correlations (τb) assessed the association between the number of modules and self-selected walking speed. Results The number of modules required in the younger adults (3.2 ± 0.4) was greater than in the individuals with KOA (2.3 ± 0.7; p = 0.002), though neither cohorts’ required number of modules differed significantly from the unimpaired older adults (2.7 ± 0.5; p ≥ 0.113). A significant association between module number and walking speed was observed (τb = 0.350, p = 0.021) and individuals with KOA walked significantly slower (0.095 ± 0.21 m/s) than younger adults (1.24 ± 0.15 m/s; p = 0.005). Individuals with KOA also exhibited altered module activation patterns and composition (which muscles are associated with each module) compared to unimpaired adults. Conclusion These findings suggest aging alone may not significantly alter modular control; however, the combined effects of knee osteoarthritis and aging may together impair the modular control of gait.
Databáze: OpenAIRE
Externí odkaz: