RT info:eu-repo/semantics/article
T1 Electromyography: A simple and accessible tool to assess physical performance and health during hypoxia training. A systematic review
A1 Fernández Lázaro, Diego
A1 Mielgo Ayuso, Juan Francisco
A1 Adams, David P.
A1 González Bernal, Jerónimo J.
A1 Fernández Araque, Ana María
A1 Cano García., Alicia
A1 Fernández Lázaro, César I.
K1 Biología celular
K1 Hypoxia
K1 Electromyography
K1 Muscle response
K1 Hipoxia
K1 Electromiografía
K1 Respuesta muscular
K1 2407 Biología Celular
AB Hypoxia causes reduced partial pressure of oxygen in arterial blood and induces adaptations in skeletal muscle that may affect individuals’ physical performance and muscular health. These muscular changes are detectable and quantifiable by electromyography (EMG), an instrument that assesses electrical activity during active contraction at rest. EMG is a relatively simple and accessible technique for all patients, one that can show the degree of the sensory and motor functions because it provides information about the status of the peripheral nerves and muscles. The main goal of this review is to evaluate the scientific evidence of EMG as an instrument for monitoring different responses of skeletal muscles subjected to external stimuli such as hypoxia and physical activity. A structured search was conducted following the Preferred Reporting Items for Systematic Review and Meta-Analyses (PRISMA) guidelines in Medline/PubMed, Scielo, Google Scholar, Web of Science, and Cochrane Library Plus. The search included articles published in the last 25 years until May 2020 and was restricted to English- and Spanish-language publications. As such, investigators identified nine articles that met the search criteria. The results determined that EMG was able to detect muscle fatigue from changes in the frequency spectrum. When a muscle was fatigued, high frequency components decreased and low frequency components increased. In other studies, EMG determined muscle activation increased during exercise by recruiting motor units and by increasing the intensity of muscle contractions. Finally, it was also possible to calculate the mean quadriceps quadratic activity used to obtain an image of muscle activation. In conclusion, EMG offers a suitable tool for monitoring the different skeletal muscle responses and has sufficient sensitivity to detect hypoxia-induced muscle changes produced by hypoxic stimuli. Moreover, EMG enhances an extension of physical examination and tests motor-system integrity.
PB MDPI
YR 2020
FD 2020
LK https://uvadoc.uva.es/handle/10324/58746
UL https://uvadoc.uva.es/handle/10324/58746
LA eng
NO Sustainability 2020, vol.12, n. 21, 9137
NO Producción Científica
DS UVaDOC
RD 18-nov-2024