How The Temperature Of Water Affected By Room Temperature

Preparation of Water Baths Three different water baths were prepared for the experiment, one at room temperature and the other two at 15°C and at 5°C. The room temperature water bath was prepared by filling a basin with tap water about ¾ full so that when the subject’s face is submerged, the water will not spill. A thermometer was used in order to obtain the temperature of the water. The temperature obtained was at 26°C. The water baths having temperatures of 15°C and 5°C were also prepared the same way as the room temperature water bath only with the addition of ice tubules in order to lower the temperature of the water and reach or to get as close to the target temperatures of 15°C and 5°C.

Figure 1. Preparation and measuring of the
Mean Heart Rate of Human Subjects Exposed in Different Water Temperatures
Groups Heart Rate
Control 109.33 ± 11.17
Treatment 1 81.00 ± 4.93
Treatment 2 71.33 ± 5.36
Treatment 3 64.33 ± 4.98

Table 1 shows the mean heart rate of subjects exposed in different water temperatures of ~26°C (T1), ~16°C (T2), ~5°C (T3), and subjects’ normal heart rate serves as the control for this experiment. As seen in Table 1, there is a gradual decrease in heart rate as the temperature also decreases. The mean normal heart rate of subjects was 109.33 ± 11.17. At ~26°C, the heart rate decreases which became 81.00 ± 4.93 then became 71.33 ± 5.36 at ~16°C. Lastly, 64.33 ± 4.98 was the mean heart rate at ~5°C. A graphical representation of the tabulated data above is seen in Fig. 3. Subjects exhibited great diving reflex as the water temperature decreases. This clearly shows the decreasing trend from control to T3. Figure. 3. Shows the Mean Heart Rate of Human Subjects Exposed in Different Water Temperatures as Tabulated in Table 1

Figure. 4. Shows the Heart Rate of Human Subjects Exposed in Different Water
However, in control an increasing trend was not that obvious unlike in T1 since subject 2 and 3 has a close heart rate of 120 and 121 and subject 1 only has 87. Thus, in T1 wherein subjects were submerged in water temperature of ~26°C. Subject 1 exhibits the lowest heart rate of 72, then subject 2 with 82, and subject 3 with 89. In T2, an increasing trend was also seen since subjects 1, 2, and 3 exhibited quite great diving reflex as the temperature goes down to ~16°C with the lowest heart rate of 65, 67, and 82, respectively. Nevertheless, in T3 with water temperature of ~5°C – subject 2 shows the lowest heart rate count of 55, followed by subject 1 with 66, the subject 3 with 72. However, subject 1 in T2 has heart rate count of 65 but in T3, instead of decreasing it increases by 1 making it 66. All subjects’ heart rate count was decreasing as the water temperature decreases except for subject 1 which increased by 1 in