Title :
A technique to monitor muscle performance during L1/M1 anti-G straining maneuvers
Author :
Ezenwa, Bertram N. ; Glaser, Roger M. ; Popper, Stephen E. ; Tripp, Lloyd D., Jr. ; Almeyda, Jose
Author_Institution :
Lab. of Appl. Physiol., Wright State Univ. Sch. of Med., Dayton, OH, USA
Abstract :
A relatively simple noninvasive method for continuous monitoring of human muscle performance and reserve capability, as well as for prediction of physical competence during repetitive execution of the L1/M1 anti-G straining maneuver (AGSM) is discussed. A computer-based system is used to quantify the force output (F0) and integrated surface electromyographic (EMG) activity of major muscle groups of the arms, abdomen and legs. Ten healthy volunteers performed up to 40 repetitive AGSMs. A significant (p<0.05) correlation coefficient of 0.70 was found between F0 and the EMG, indicating that either variable can be used to predict human performance independently. Plots of the two variables demonstrate similar trends among individuals. It is observed that when an individual´s muscle is performance below 60% of the initial value, that individual is no longer able to continue performing AGSMs
Keywords :
aerospace biophysics; biological techniques and instruments; biomechanics; muscle; L1/M1 anti-G straining maneuvers; abdomen; aircraft pilots; arms; computer-based system; correlation coefficient; force output; healthy volunteers; legs; muscle performance monitoring method; muscle reserve capability; physical competence prediction; relatively simple noninvasive method; surface electrographic activity; Abdomen; Aircraft; Electromyography; Force feedback; Humans; Laboratories; Leg; Monitoring; Muscles; Physiology;
Conference_Titel :
Engineering in Medicine and Biology Society, 1989. Images of the Twenty-First Century., Proceedings of the Annual International Conference of the IEEE Engineering in
Conference_Location :
Seattle, WA
DOI :
10.1109/IEMBS.1989.95959
