Title :
Snapshot assessment of fatigue at each contraction during exercise
Author :
Kiryu, T. ; Sakahashi, S. ; Satoh, A. ; Irishima, K.
Author_Institution :
Graduate Sch. of Sci. & Technol., Niigata Univ., Japan
Abstract :
The snapshot assessment allowed interpretation of the local relationship between cardiovascular and muscular activities with respect to the global behavior. We studied the relationship at each contraction during skiing and cycling exercise using the time-frequency representations. The results demonstrated that the time-varying features of short-term frequency components were probably related to the autonomic nervous activity and the motor unit firing as physical fatigue progressed.
Keywords :
biomechanics; electrocardiography; electromyography; medical signal processing; signal representation; sport; time-frequency analysis; wavelet transforms; Gabor function; autonomic nervous activity; autonomic regulation; biosignal processing; cardiovascular activities; cycling exercise; energy metabolism; fatigue; heart rate variability; local relationship; macular activity; matching pursuit method; motor unit firing; muscle contraction; muscular activities; short-term frequency components; skiing exercise; snapshot assessment; time-frequency representations; time-varying features; wavelet transform; Cardiology; Data analysis; Electrocardiography; Fatigue; Fourier transforms; Heart rate variability; Laboratories; Matching pursuit algorithms; Muscles; Time frequency analysis;
Conference_Titel :
Engineering in Medicine and Biology Society, 2001. Proceedings of the 23rd Annual International Conference of the IEEE
Print_ISBN :
0-7803-7211-5
DOI :
10.1109/IEMBS.2001.1020378
