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Listen "JNP Micro Podcasts ”Four Questions”: Alexander M. Zero"
Episode Synopsis
In this podcast co lead author Alexander M. Zero of The University of Western Ontario discusses the recently published research titled "Motor unit firing rates in young and very old adult males during an isokinetic fatiguing task and short-term recovery in the anconeus muscle."
NEW & NOTEWORTHY Maximal motor unit firing rates were recorded during an isokinetic fatiguing protocol and short-term recovery in young and very old adult males. Prior studies were limited to isometric fatiguing tasks. Despite the old being ∼37% weaker and less fatigable, anconeus rates during elbow extension declined with fatigue and recovered similarly to young males. Therefore, it is unlikely that greater fatigue resistance of very old males during isokinetic contractions is related to differences in motor unit rates.
Article Citation:
Motor unit firing rates in young and very old adult males during an isokinetic fatiguing task and short-term recovery in the anconeus muscle
Alexander M. Zero, Eric A. Kirk, Kevin J. Gilmore, and Charles L. Rice
Journal of Neurophysiology 2023 130:1, 179-188
NEW & NOTEWORTHY Maximal motor unit firing rates were recorded during an isokinetic fatiguing protocol and short-term recovery in young and very old adult males. Prior studies were limited to isometric fatiguing tasks. Despite the old being ∼37% weaker and less fatigable, anconeus rates during elbow extension declined with fatigue and recovered similarly to young males. Therefore, it is unlikely that greater fatigue resistance of very old males during isokinetic contractions is related to differences in motor unit rates.
Article Citation:
Motor unit firing rates in young and very old adult males during an isokinetic fatiguing task and short-term recovery in the anconeus muscle
Alexander M. Zero, Eric A. Kirk, Kevin J. Gilmore, and Charles L. Rice
Journal of Neurophysiology 2023 130:1, 179-188
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