In the contact tests, the colloid was nearly always more toxic than the crystals. In all the tests, except those with dieldrin, the relative toxicity (colloid : crystals) was greater at the lower after-treatment temperature, i.e. the temperature coeficient of the relative toxicity was ...
Any exercise intensity that can be comfortably sustained is usually below this threshold, and will have an accompanying heart rate. As it is much easier to measure heart rate than lactate production, heart rate can be used as a surrogate measure of exercise intensity. What is the best exercise...
Variations in heart rate during exercise correlate with changes of exercise intensity and may be measured directly by radiotelemetry and continuous ECG recording. The heart rate can also be recorded in the memory of a microcomputer, which can be carried on the wrist as easily as a watch. The ...
Heart-rate profile during exercise as a predictor of sudden death. from any cause but not of nonsudden death from myocardial infarction.The heart-rate profile during exercise and recovery is a predictor of sudden death.do... X Jouven,JP Empana,PJ Schwartz,... - 《New England Journal of ...
Changes in heart rate during exercise and recovery from exercise are mediated by the balance between sympathetic and vagal activity. Since alterations in the neural control of cardiac function contribute to the risk of sudden death, we tested the hypothesis that among apparently healthy persons, sudde...
Exercising has a proven therapeutic effect on the cardiovascular system and can counteract the increase of cardiovascular diseases in our aging society. An easy and good measure of the cardiovascular feedback is the heart rate. Being able to model and predict the response of a subject's heart ...
During exercise, two of the important organs of the body come into action: the heart and the lungs. The lungs bring oxygen into the body,to provide energy, and remove carbon dioxide, the waste product created when you produce energy. The heart pumps the oxygen to the muscles that are doin...
Six experimental (E) subjects received beat-to-beat heart-rate feedback and were asked to slow heart rate while exercising; six control (C) subjects received no feedback. Averaged over 5 days (25 training trials) the exercise heart-rate of the E group was 97.8 bt min−1, whereas the ...
网络释义 1. 运动时 ...期(postabsorptive stage) 运动时(during exercise) 运动后(after exercise) 13 青春期的快速成长,主要是因为: …xuelele.com.tw|基于2个网页 例句 释义: 全部,运动时 更多例句筛选 1. Results: Exercise duration, peak exercise load, and heart rate during exercise did not ...
Heart dimensions may influence the occurrence of the heart rate deflection point in highly trained cyclists. OBJECTIVES: To determine whether the heart rate (HR) response to exercise in 21 highly trained cyclists (mean (SD) age 25 (3) years) was related to their h... A Lucía,A Carvajal,...