Skip to main content

Table 5 Changes in physiological parameters and rating of perceived exertion under different loads, altitudes and speeds (mean ± SD, n = 12)

From: Soldiers’ load carriage performance in high mountains: a physiological study

Parameters 2.5 km/h HA1 2.5 km/h HA2 3.5 km/h HA1 3.5 km/h HA2
NL L1 L2 L3 NL L1 L2 L3 NL L1 L2 L3 NL L1 L2 L3
VO2 (ml · min−1 · kg−1)* 9.3 ± 0.7 10.0 ± 0.9 11.4 ± 1.2 12.5 ± 1.3 10.3 ± 0.7 11.7 ± 0.9 12.5 ± 1.2 14.3 ± 1.3 11.0 ± 0.6 12.4 ± 1.3 13.3 ± 2.1 14.4 ± 2.2 12.5 ± 0.9 14.7 ± 0.7 15.8 ± 1.5 16.1 ± 1.8
HR (beats · min−1)* 87 ± 15 90 ± 12 92 ± 15 98 ± 12 89 ± 12 93 ± 12 98 ± 13 105 ± 11 89 ± 11 95 ± 14 100 ± 12 102 ± 10 96 ± 12 100 ± 10 109 ± 12 113 ± 16
VE (L · min−1)* 21.1 ± 3.0 23.7 ± 3.1 25.8 ± 2.5 28.8 ± 4.9 22.7 ± 3.8 26.8 ± 3.9 29 ± 4.5 32.2 ± 5.2 26.7 ± 3.2 29.9 ± 3.5 33.3 ± 4.9 35.2 ± 4.5 30.2 ± 4.6 35.7 ± 4.4 40.2 ± 4.6 41.8 ± 6.7
EE (Kcal · min−1)* 3.0 ± 0.3 3.2 ± 0.4 3.6 ± 0.3 4.0 ± 0.4 3.5 ± 0.4 4.0 ± 0.4 4.3 ± 0.4 4.6 ± 0.5 3.3 ± 0.4 3.8 ± 0.4 4.1 ± 0.6 4.6 ± 0.7 4.0 ± 0.4 4.7 ± 0.5 5.1 ± 0.6 5.2 ± 0.7
RWL (%)* 21.1 ± 2.5 22.6 ± 3.1 26.3 ± 3.9 28.7 ± 4.1 23.6 ± 4.0 26.8 ± 4.8 28.6 ± 4.8 32.9 ± 5.5 30.5 ± 2.8 34.6 ± 3.6 36.7 ± 4.4 39.3 ± 5.6 35 ± 3.6 40.4 ± 5.3 43.4 ± 5.2 44 ± 6.4
RPE* 9 ± 1.0 11 ± 1.4 12 ± 1.6 13 ± 1.2 9 ± 0.9 11 ± 1.0 13 ± 1.0 14 ± 0.9 8 ± 1.4 11 ± 1.4 14 ± 1.8 15 ± 1.7 10 ± 0.8 12 ± 1.2 15 ± 1.1 17 ± 1.2
  1. *P < 0.05, over all significant. NL no load, L1 10.7 kg, L2 21.4 kg, L3 30 kg, HA1 high altitude 1, HA2 high altitude 2