ArticleEuropean journal of applied physiology2019
The modulation of force steadiness by electrical nerve stimulation applied to the wrist extensors differs for young and older adults.
Article in European journal of applied physiology, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.
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Who cites it
5 citing papers in PubMed, 10 citations in OpenAlex.
- Influence of visual feedback and cognitive challenge on the age-related changes in force steadiness.Experimental brain research · 2024Article
- Regional recruitment and differential behavior of motor units during postural control in older adults.Journal of neurophysiology · 2023Article
- Aging and skeletal muscle force control: Current perspectives and future directions.Scandinavian journal of medicine & science in sports · 2022Review
- Relationship between ankle plantar flexor force steadiness and postural stability on stable and unstable platforms.European journal of applied physiology · 2020Article
- Differences in postural sway among healthy adults are associated with the ability to perform steady contractions with leg muscles.Experimental brain research · 2020Article
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Authors and funding
3 authors at 1 institution in 1 country.
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Abstract
purposeWe compared the modulation of force steadiness by different types of electrical nerve stimulation in young (n = 13, 25 ± 4 years) and older (n = 12, 78 ± 5 years) adults.
methodsThe protocol involved four types of isometric contractions with the wrist-extensor muscles at 10% of the maximal force. Three of the contractions involved electrical nerve stimulation that comprised two forms of neuromuscular electrical stimulation (NMES) to evoke muscle contractions and a voluntary contraction with superimposed transcutaneous electrical nerve stimulation (TENS) at an intensity less than motor threshold.
resultsThe coefficient of variation (CV) for force during voluntary wrist extension was less (P = 0.03) for young (1.82 ± 0.43%) than older adults (2.80 ± 1.08%). The CV for force did not differ between age groups during the three types of electrical nerve stimulation but was reduced relative to the value observed during voluntary wrist extension for older adults. In contrast, the CV for force increased during the voluntary contraction with superimposed TENS for young adults but not for older adults. Moreover, there were significant negative correlations in older adults between the CV for force during the voluntary contraction and its decrease with electrical nerve stimulation.
conclusionDifferences in the CV for force between the evoked and voluntary contractions for the two age groups suggest that the variance in common synaptic input to motor neurons during steady voluntary contractions with the wrist extensors is greater for older adults than young adults.
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