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Effects of acute sleep deprivation on H reflex and V wave
Author(s) -
D. Gonçalves André,
Teodosio Carolina,
PezaratCorreia Pedro,
VilaChã Carolina,
V. Mendonca Goncalo
Publication year - 2021
Publication title -
journal of sleep research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.297
H-Index - 117
eISSN - 1365-2869
pISSN - 0962-1105
DOI - 10.1111/jsr.13118
Subject(s) - sleep deprivation , h reflex , medicine , antagonist , agonist , reflex , sleep (system call) , soleus muscle , endocrinology , anesthesia , electromyography , psychology , physical medicine and rehabilitation , receptor , circadian rhythm , skeletal muscle , computer science , operating system
The impact of sleep deprivation on muscular strength and power remains poorly understood. We aimed to determine the acute effects of 24 hr of sleep deprivation on H‐reflex and V‐wave excitability. Fourteen healthy young adults (eight men, six women) were included. Participants visited the laboratory on two different occasions, without and with 24 hr of sleep deprivation. In each session, participants were tested for maximal voluntary contraction (MVC) of the plantar flexors and dorsiflexors, soleus H‐ and M‐recruitment curves, and evoked V wave, as well as tibialis anterior/soleus electromyographic co‐activation. Twenty‐four hours of sleep deprivation did not affect either plantarflexion MVC or soleus electromyographic normalized amplitude ( p > .05). Moreover, H‐reflex and V‐wave peak‐to‐peak normalized amplitude did not change with sleep deprivation ( p > .05). Conversely, we obtained a significant increase in antagonist/agonist level of co‐activation during MVC post‐sleep deprivation (6.2 ± 5.2%, p < .01). In conclusion, we found that H‐reflex and V‐wave responses are well preserved after 24 hr of sleep deprivation, revealing that descending neural drive and/or modulation in Ia afferent input remains largely unaffected under these circumstances. Yet, sleep deprivation affects motor control by exacerbating the magnitude of antagonist/agonist co‐activation during forceful muscle contractions and this is novel.