Siddique, Ummatul and Frazer, Ashlyn K and Avela, Janne and Walker, Simon and Ahtiainen, Juha P and Tanel, Meghan and Uribe, Sergio and Akalu, Yonas and Rostami, Mohamad and Tallent, Jamie and Kidgell, Dawson J (2024) Differential modulation of corticomotor excitability in older compared to young adults following a single bout of strength -exercise. Archives of Gerontology and Geriatrics, 122. p. 105384. DOI https://doi.org/10.1016/j.archger.2024.105384
Siddique, Ummatul and Frazer, Ashlyn K and Avela, Janne and Walker, Simon and Ahtiainen, Juha P and Tanel, Meghan and Uribe, Sergio and Akalu, Yonas and Rostami, Mohamad and Tallent, Jamie and Kidgell, Dawson J (2024) Differential modulation of corticomotor excitability in older compared to young adults following a single bout of strength -exercise. Archives of Gerontology and Geriatrics, 122. p. 105384. DOI https://doi.org/10.1016/j.archger.2024.105384
Siddique, Ummatul and Frazer, Ashlyn K and Avela, Janne and Walker, Simon and Ahtiainen, Juha P and Tanel, Meghan and Uribe, Sergio and Akalu, Yonas and Rostami, Mohamad and Tallent, Jamie and Kidgell, Dawson J (2024) Differential modulation of corticomotor excitability in older compared to young adults following a single bout of strength -exercise. Archives of Gerontology and Geriatrics, 122. p. 105384. DOI https://doi.org/10.1016/j.archger.2024.105384
Abstract
Evidence shows corticomotor plasticity diminishes with age. Nevertheless, whether strength-training, a proven intervention that induces corticomotor plasticity in younger adults, also takes effect in older adults, remains untested. This study examined the effect of a single-session of strength-exercise on corticomotor plasticity in older and younger adults. Thirteen older adults (72.3 ± 6.5 years) and eleven younger adults (29.9 ± 6.9 years), novice to strength-exercise, participated. Strength-exercise involved four sets of 6-8 repetitions of a dumbbell biceps curl at 70-75% of their one-repetition maximum (1-RM). Muscle strength, cortical, corticomotor and spinal excitability, before and up to 60-minutes after the strength-exercise session were assessed. We observed significant changes over time (p < 0.05) and an interaction between time and age group (p < 0.05) indicating a decrease in corticomotor excitability (18% p < 0.05) for older adults at 30- and 60-minutes post strength-exercise and an increase (26% and 40%, all p < 0.05) in younger adults at the same time points. Voluntary activation (VA) declined in older adults immediately post and 60-minutes post strength-exercise (36% and 25%, all p < 0.05). Exercise had no effect on the cortical silent period (cSP) in older adults however, in young adults cSP durations were shorter at both 30- and 60- minute time points (17% 30-minute post and 9% 60-minute post, p < 0.05). There were no differences in short-interval cortical inhibition (SICI) or intracortical facilitation (ICF) between groups. Although the corticomotor responses to strength-exercise were different within groups, overall, the neural responses seem to be independent of age.
Item Type: | Article |
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Uncontrolled Keywords: | Adult; Age Factors; Aged; Aging; Electromyography; Evoked Potentials, Motor; Female; Humans; Male; Motor Cortex; Muscle Strength; Muscle, Skeletal; Neuronal Plasticity; Resistance Training; Transcranial Magnetic Stimulation; Young Adult |
Divisions: | Faculty of Science and Health Faculty of Science and Health > Sport, Rehabilitation and Exercise Sciences, School of |
SWORD Depositor: | Unnamed user with email elements@essex.ac.uk |
Depositing User: | Unnamed user with email elements@essex.ac.uk |
Date Deposited: | 22 May 2024 09:32 |
Last Modified: | 30 Oct 2024 21:10 |
URI: | http://repository.essex.ac.uk/id/eprint/37881 |
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