Campus Units
Kinesiology
Document Type
Article
Publication Version
Accepted Manuscript
Publication Date
2018
Journal or Book Title
Journal of Aging and Physical Activity
First Page
1
Last Page
31
DOI
10.1123/japa.2017-0400
Abstract
It is unknown if higher antagonist muscle co-activation is a factor contributing to higher energy cost of cycling in older adults. We determined how age, power output, and cadence affect metabolic cost and lower extremity antagonist muscle co-activation during submaximal cycling. Thirteen young and 12 older male cyclists completed 6-minute trials at four power output-cadence conditions (75W-60rpm, 75W-90rpm, 125W-60rpm, and 125W-90rpm) while electromyography (EMG) and oxygen consumption were measured. Knee and ankle co-activation indices were calculated using vastus lateralis, biceps femoris, gastrocnemius, and tibialis anterior EMG data. Net rate of energy cost of cycling was higher in older compared to young cyclists at 125W (p=0.002) and at 90rpm (p=0.026). No age-related differences were observed in the magnitude or duration of co-activation about the knee or ankle (p>0.05). Our results indicated knee and ankle co-activation is not a substantive factor contributing to higher energy cost of cycling in older adults.
Copyright Owner
Human Kinetics
Copyright Date
2018
Language
en
File Format
application/pdf
Recommended Citation
Buddhadev, Harsh H. and Martin, Philip E., "Effects of Age, Power Output, and Cadence on Energy Cost and Lower Limb Antagonist Muscle Co-Activation during Cycling" (2018). Kinesiology Publications. 30.
https://lib.dr.iastate.edu/kin_pubs/30
Comments
This article is published as Buddhadev,H.H., Martin, P.E. Effects of Age, Power Output, and Cadence on Energy Cost and Lower Limb Antagonist Muscle Co-Activation during Cycling. Journal of Aging and Physical Activity; 2018; pg.1-31. DOI: 10.1123/japa.2017-0400. Posted with permission.