A point of discontinuity on the heart rate curve appears in the early stage of exercise.
When measured continuously, the heart rate often appears to hesitate in its elevation momentarily in the early stage of exercise. This phenomenon was called tentatively "a point of discontinuity on a heart rate curve", and was observed in 19 out of 30 healthy subjects. The point appeared when the heart rate reached 87.8 +/- 2.9% (88.3 +/- 2.6% for athletes and 87.4 +/- 3.5% for nonathletes) of the plateau level. The precise cause of the phenomenon was undetermined, however was considered to be normal physiological activities but to be cardiac abnormalities of subjects.
Imachi
Y
Y
Research Center for Sports Science, Kyoto University, Japan.
Man-i
M
M
D000328:Adult; D015444:Exercise / Q000502:physiology*; D005080:Exercise Test; D006339:Heart Rate; D006801:Humans; D008297:Male; D013177:Sports