We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Neuromuscular behaviour in the first dorsal interosseus following mental fatigue.
- Authors
Marsala, Michael J.; Christie, Anita D.
- Abstract
We examined sex‐specific changes to neuromuscular function in response to mental fatigue. Twenty‐five young, healthy adults (13 F, 12 M) performed a mentally fatiguing task and control condition for 30 min on two separate days. Neuromuscular function was assessed in the first dorsal interosseous before and after each condition. Reaction time decreased after the mentally fatiguing task (P < 0.001, η2 = 0.47). Males and females reported higher levels of subjective fatigue after the mentally fatiguing task (P < 0.02, η2 = 0.07). Motor unit firing rate increased over time at 10% maximal voluntary contraction (MVC; P < 0.04, η2 = 0.16), and decreased over time at 50% MVC (P < 0.01, η2 = 0.14); however, this was not unique to either sex. During a variable force contraction, error decreased in females over time and increased in males (P < 0.05, η2 = 0.13), although changes were not unique to mental fatigue. Physiological function of the neuromuscular system was not specifically affected by mental fatigue in males or females. What is the central question of this study?What is the effect of mental fatigue on neuromuscular behaviour in the first dorsal interosseus?What is the main finding and its importance?Mental fatigue does not have a significant effect on neuromuscular function in the first dorsal interosseus. This evidence supports previous evidence observed in the tibialis anterior that there is no significant influence on, nor sex‐specific changes to, neuromuscular function after a mentally fatiguing condition.
- Subjects
MENTAL fatigue; NEUROMUSCULAR system physiology; TOUGHNESS (Personality trait); NEUROMUSCULAR system; FATIGUE (Physiology); MOTOR unit
- Publication
Experimental Physiology, 2024, Vol 109, Issue 3, p416
- ISSN
0958-0670
- Publication type
Article
- DOI
10.1113/EP091349