The Effects of Metabolic Work Rate and Ambient Environment on Physiological Tolerance Times While Wearing Explosive and Chemical Personal Protective Equipment
Table 3
Physiological data at the cessation of each trial ( = 12).
WBGT (°C)
Speed (km·h−1)
HR (bpm)
(°C)
(°C)
(°C)
PSI
Body mass loss (%)
21
2.5
164.0 (132–187)b
38.3 (37.7–39.0)
37.1 (36.5–38.1)
38.0 (37.5–38.7)
6.7 (4.7–9.2)
1.4 (0.6–2.1)
4
174.6 (152–187)
38.3 (37.7–39.1)
37.2 (36.8–37.9)
38.1 (37.5–38.9)
7.0 (5.5–8.7)
1.1 (0.5–2.2)
5.5
178.3 (164–190)
37.9 (37.5–39.0)
36.7 (34.8–38.5)
37.7 (37.2–38.9)
6.6 (5.2–9.0)
0.7 (0.2–1.3)
30
2.5
174.2 (130–186)
38.4 (37.7–39.1)
38.0 (37.4–38.6)
38.3 (37.7–39.0)
7.2 (3.6–9.1)
1.2 (0.6–1.7)
4
175.0 (135–186)
38.3 (37.6–38.9)
37.9 (37.5–38.5)
38.2 (37.6–38.7)
7.1 (6.0–8.1)
1.0 (0.3–1.5)
5.5
178.0 (165–188)
37.9 (36.7–38.5)
37.5 (36.7–38.3)
37.8 (36.7–38.5)
6.7 (5.7–8.1)
0.7 (0.3–1.2)
37
2.5
170.7 (113–187)
38.5 (37.9–39.1)
38.5 (38.0–39.2)
38.5 (38.0–39.2)
7.3 (3.6–9.0)
1.2 (0.5–1.7)
4
178.8 (166–190)
38.2 (37.8–39.3)
38.4 (37.7–39.3)
38.3 (37.8–39.3)
7.2 (5.9–9.5)
0.9 (0.4–1.6)
5.5
179.2 (166–191)
37.8 (37.4–38.7)
38.0 (36.6–39.4)
37.9 (37.3–38.8)
6.5 (5.4–8.3)
0.6 (0.3–1.1)
Values are mean (range). WBGT, wet bulb globe temperature; HR, heart rate; bpm, beats per minute; , core temperature; , skin temperature; , mean body temperature; PSI, physiological strain index; bsignificantly different to 5.5 km·h−1 at the same environmental condition ( < 0.05). Note. Significant main effects ( < 0.05) for work intensity (, , and body mass loss) and environment (, HR, body mass loss) were observed—see Results section for main effect comparisons.
