A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
Differential modulation of corticomotor excitability in older compared to young adults following a single bout of strength -exercise (2024)

Siddique, U., Frazer, A. K., Avela, J., Walker, S., Ahtiainen, J. P., Tanel, M., Uribe, S., Akalu, Y., Rostami, M., Tallent, J., & Kidgell, D. 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, Article 105384. https://doi.org/10.1016/j.archger.2024.105384

JYU-tekijät tai -toimittajat

Avela, Janne
Walker, Simon
Ahtiainen, Juha
Tanel, Meghan

Julkaisun tiedot

Julkaisun kaikki tekijät tai toimittajat: Siddique, Ummatul; Frazer, Ashlyn K.; Avela, Janne; Walker, Simon; Ahtiainen, Juha P.; Tanel, Meghan; Uribe, Sergio; Akalu, Yonas; Rostami, Mohamad; Tallent, Jamie; et al.

Lehti tai sarja: Archives of Gerontology and Geriatrics

ISSN: 0167-4943

eISSN: 1872-6976

Julkaisuvuosi: 2024

Ilmestymispäivä: 20.02.2024

Volyymi: 122

Artikkelinumero: 105384

Kustantaja: Elsevier

Julkaisumaa: Alankomaat

Julkaisun kieli: englanti

DOI: https://doi.org/10.1016/j.archger.2024.105384

Julkaisun avoin saatavuus: Avoimesti saatavilla

Julkaisukanavan avoin saatavuus: Osittain avoin julkaisukanava

Julkaisu on rinnakkaistallennettu (JYX): https://jyx.jyu.fi/handle/123456789/93970

Tiivistelmä

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.

YSO-asiasanat: voimaharjoittelu; lihasvoima; lihakset; plastisuus; nuoret aikuiset; ikääntyneet; ikääntyminen

Vapaat asiasanat: ageing; corticomotor plasticity; force production; intracortical inhibition; neural drive; strength-exercise

Liittyvät organisaatiot

Hankkeet, joissa julkaisu on tehty

OKM-raportointi: Kyllä

Alustava JUFO-taso: 1