Human Dive Response; Changes in Heart Rate While Resting and Submerged
The Changes of Heart Rate of Students during Human Dive Response when Resting and Submerged
Abstract The dive response is known more popularly as a mammalian dive reflex. It is a survival mechanism built into mammal’s bodies, essentially. Over the years, scientists have been determined to find what triggers mammals to have a decreased heart rate when submerged under water allowing them to stay under the water longer when they do not typically live under water. In this experiment, we tested three different conditions in the dive response to see whether heart rate decreased with each treatment. To characterize the dive response, we measured subjects’ heart rates at rest and with their face submerged under a tub full of room temperature water. After that initial step of the experiment, two more treatments were tested to see whether or not it would affect the dive response; when resting, the subject would be able to breath during the thirty seconds, and when submerged, the subject could move their feet slowly as if they were swimming. The latter treatment experiments were then compared to the first experiment done, where the result was used as a control to the new experiments. The purpose of the experiment was to see if there was a difference between the control and experiment; the experiment being movement and breathing. We found that there was a significant difference between the resting and submerged treatments when there is no movement and breathing; (0.009<0.05; P<0.05). With the breathing experiment; (P=0.18, P<0.05), there is no significant difference between the control and the experiment, and with the movement experiment; (P=0.08; P<0.05); this experiment also showed that there is no significant difference in heart rate when moving ones feet and not moving. We were concluded that movement and breathing does not decrease the heart rate for the dive response, but not moving and not breathing during the resting and submerged treatments does
Abstract The dive response is known more popularly as a mammalian dive reflex. It is a survival mechanism built into mammal’s bodies, essentially. Over the years, scientists have been determined to find what triggers mammals to have a decreased heart rate when submerged under water allowing them to stay under the water longer when they do not typically live under water. In this experiment, we tested three different conditions in the dive response to see whether heart rate decreased with each treatment. To characterize the dive response, we measured subjects’ heart rates at rest and with their face submerged under a tub full of room temperature water. After that initial step of the experiment, two more treatments were tested to see whether or not it would affect the dive response; when resting, the subject would be able to breath during the thirty seconds, and when submerged, the subject could move their feet slowly as if they were swimming. The latter treatment experiments were then compared to the first experiment done, where the result was used as a control to the new experiments. The purpose of the experiment was to see if there was a difference between the control and experiment; the experiment being movement and breathing. We found that there was a significant difference between the resting and submerged treatments when there is no movement and breathing; (0.009<0.05; P<0.05). With the breathing experiment; (P=0.18, P<0.05), there is no significant difference between the control and the experiment, and with the movement experiment; (P=0.08; P<0.05); this experiment also showed that there is no significant difference in heart rate when moving ones feet and not moving. We were concluded that movement and breathing does not decrease the heart rate for the dive response, but not moving and not breathing during the resting and submerged treatments does
Cited: Pasche, Avid, and John Krog. "Heart Rate in Resting Seals On Land And In Water." Comparative Biochem and Physiology 674.1 (1980) Butler P.J. & Woakes A.J. (1975) Changes in heart rate and respiratory frequency associated with natural submersion of ducks. Proc. Physiol. Soc., December 1975. D. 16, 16-17