Sleep architecture and the absence of trapezius muscle atonia in women with chronic whiplash-associated disorder: a pilot study
Por:
Mateos-Salgado, Erik L., Dominguez-Trejo, Benjamin, Guevara-Lopez, Uria M., Ayala-Guerrero, Fructuoso
Publicada:
1 abr 2022
Ahead of Print:
1 oct 2021
Resumen:
Sleep disturbances frequently occur in people with whiplash-associated
disorder (WAD) and have been evaluated using questionnaires or
actigraphy. It is not clear whether sleep architecture, as assessed by
polysomnography (PSG), is altered in individuals with WAD. Additionally,
in people with WAD, muscle dysfunction is observed during tasks
performed during wakefulness. Thus, this study aimed to analyze the
sleep architecture of patients with chronic WAD as well as to evaluate
trapezius muscle activity during sleep. Nine women with chronic WAD and
nine healthy age-matched women participated in the study. Two PSG
recordings were conducted for each participant. Surface electromyography
signal samples of the right and left trapezius, and mentonian muscles
were obtained from N2, N3, and REM sleep stages for analysis.
Significant differences were found in the percentages of total sleep
time in the N1 and N2 stages between the two groups. While the muscle
tone of the three muscles analyzed decreased progressively across the
sleep stages in the healthy group, in the chronic WAD group, this
decrement was observed only in the mentonian muscle, and the trapezius
muscle continued to exhibit the same muscle tone throughout the sleep
stages without atonia during REM sleep. The absence of trapezius muscle
atonia during REM sleep in the WAD patients may be related to
dysfunction of the mechanisms that regulate motor activity.
Filiaciones:
Mateos-Salgado, Erik L.:
School of Psychology, National Autonomous University of Mexico, Av. Universidad 3004, Coyoacán, Mexico City, 04510, Mexico
Dominguez-Trejo, Benjamin:
School of Psychology, National Autonomous University of Mexico, Av. Universidad 3004, Coyoacán, Mexico City, 04510, Mexico
Guevara-Lopez, Uria M.:
School of Medicine and Surgery, Benito Juárez Autonomous University of Oaxaca, Ex Hacienda de Aguilera S/N, Calz. San Felipe del Agua, Oaxaca, Oaxaca de Juárez, 68120, Mexico
Ayala-Guerrero, Fructuoso:
School of Psychology, National Autonomous University of Mexico, Av. Universidad 3004, Coyoacán, Mexico City, 04510, Mexico
|