Soldiers’ load carriage performance in high mountains: a physiological study
RESEARCH|Updated:2026-03-12
|
Soldiers’ load carriage performance in high mountains: a physiological study
Soldiers’ load carriage performance in high mountains: a physiological study
MMR2017年4卷第3期 页码:132-140
Affiliations:
1.Defence Institute of Physiology and Allied Sciences, Defence Research & Development Organisation, Ministry of Defence, Government of India, Lucknow Road, Delhi 110054, India
2.Retired from- Institute of Nuclear Medicine and Allied Sciences, Defence Research and Development Organization, Ministry of Defence, Government of India, Delhi, India
Soldiers’ load carriage performance in high mountains: a physiological study[J]. MMR, 2017,4(3):132-140.
Chatterjee et al.: Soldiers’ load carriage performance in high mountains: a physiological study. Mil Med Res, 2017, 4: 6
Soldiers’ load carriage performance in high mountains: a physiological study[J]. MMR, 2017,4(3):132-140. DOI: 10.1186/s40779-017-0113-x.
Chatterjee et al.: Soldiers’ load carriage performance in high mountains: a physiological study. Mil Med Res, 2017, 4: 6 DOI: 10.1186/s40779-017-0113-x.
Soldiers’ load carriage performance in high mountains: a physiological study
The present study was designed to evaluate load carriage performance at extremely high altitudes with different loads and walking speeds in terms of physiological evaluation. The degree of maximum oxygen consumption changes at high altitudes was also examined.
Methods:
2
Twelve Indian Army soldiers were acclimatized at altitudes of 3
505m and 4
300m. They walked for 10 minutes on a motorized treadmill at 2.5km/h and 3.5km/h speeds during carrying no loads and three magnitudes of load (10.7kg
21.4kg
30kg) at both altitudes. Physiological parameters such as oxygen consumption
energy expenditure
heart rate
and ventilation were recorded for each breath using a gas analyzer. The rating of perceived exertion was also noted after each load carriage session. Maximal oxygen consumption (VO
2max
) was measured at sea level and the two high altitudes
and respective relative workloads (% of VO
2max
) were calculated from oxygen consumption. Repeated measure ANOVA was applied to reveal the significant effects of the independent variables.
Results:
2
The participants had significant reductions in VO
2max
with rising altitude. Marked increases in almost all physiological parameters were observed with increasing load
altitude
and speed. The soldiers expressed heavy perceived exertion levels with higher loads at 3.5km/h at the two high altitudes.
Conclusions:
2
Considering the physiological responses
expressions of perceived exertion and changes in relative work load at both of the high altitudes. Indian soldiers are advised to walk slowly with adequate rest in between their schedules and to carry not more than 32% of their body weight.
关键词
Keywords
references
Cheung SS . Advanced environmental exercise physiology- advanced exercise physiology series . 1st ed . Human Kinetics ; 2010 . Chapter 9 .
West JB . Prediction of barometric pressures at high altitude with the use of model atmospheres . J Appl Physiol . 1996 ; 81 : 1850 - 4 .
Peacock AJ , Jones PL . Gas exchange at extreme altitude: results from the British 40th Anniversary Everest Expedition . Eur Resp J . 1997 ; 10 : 1439 - 44 .
West JB . Human limits for hypoxia. The physiological challenge of climbing Mt Everest . Ann N Y Acad Sci . 2000 ; 899 : 15 - 27 .
Pugh LG , Gill MB , Lahiri S , Milledge JS , Ward MP , West JB . Muscular exercise at great altitudes . J Appl Physiol . 1964 ; 19 : 431 - 40 .
Bielderman BA , Muza SR , Rock PB , Fulco CS , Lyons TP , Hyot RW , et al . Exercise responses after altitude acclimatization are retained during reintroduction to altitude . Med Sc in Sp Exerc . 1997 ; 29 ( 12 ): 1588 - 95 .
Fulco CS , Rock PB , Cymerman A . Maximal and submaximal exercise performance at altitude . Aviat Space Env Med . 1998 ; 69 ( 8 ): 793 - 801 .
Majumdar D , Pal MS , Majumdar D . Effects of military load carriage on kinematics of gait . Ergo . 2010 ; 53 ( 6 ): 782 - 91 .
Chatterjee T , Bhattacharyya D , Pal MS , Majumdar D . Cardiorespiratory changes with compact backpack system and distributed mode of load carriage . Ind J of Physiol and Pharmacol . 2012 ; 56 ( 2 ): 128 - 34 .
Pal MS , Majumdar D , Bhattacharyya M , Kumar R , Majumdar D . Optimum load for carriage by soldiers at two walking speeds on level ground . Int J Ind Ergon . 2009 ; 39 : 68 - 72 .
Pal MS , Majumdar D , Pramanik A , Chowdhury B , Majumdar D . Optimum load for carriage by Indian soldiers on different uphill gradients at specified walking speed . Int J of Ind Ergo . 2014 ; 44 : 260 - 5 .
Wasserman K , Hansen JE , Sne DY , Wasserman K , Hansen JE , Sne DY . Principles of Exercise Testing and interpretation . 2nd ed . Philadelphia : Lea and Febiger ; 1994 . p. 112 - 31 .
Nag PK , Sen RN , Ray US . Optimal rate of work for mountaineers . J Appl Physiol . 1978 ; 44 : 952 - 5 .
Borg GAV . Perceived exertion as an indicator of somatic stress . Scand J of Rehab Med . 1970 ; 2 : 92 - 8 .
Saunders PU , Pyne DB , Gore CJ . Endurance training at altitude . High Alt Med Biol . 2009 ; 10 ( 2 ): 135 - 48 .
Sutton JR , Reeves JT , Wagner PD , Groves BM , Cymerman A , Malconian MK , et al . Operation Everest II: oxygen transport during exercise at extreme hypoxia . J Appl Physiol . 1988 ; 64 ( 4 ): 1309 - 21 .
Saltin B , Grover RF , Blomqvist CG , Hartley LH , Johnson Jr RL . Maximal oxygen uptake and cardiac output after 2 weeks at 4,300 m . J Appl Physiol . 1968 ; 25 ( 4 ): 400 - 9 .
Grover RF , Weil JV , Reeves JT . Cardiovascular adaptation to exercise at high altitude . Exerc Sp Sc Rev . 1986 ; 14 : 269 - 302 .
Cibella F , Cuttitta G , Kayser B , Narici M , Romano S , Saibene F . Respiratory mechanics during exhaustive sub-maximal exercise at high altitude in healthy humans . J Physiol . 1996 ; 494 ( Pt 3 ): 881 - 90 .
Cymerman A , Pandolf KB , Young AJ , Maher JT . Energy expenditure during load carriage at high altitude . J Appl Physiol Respir Environ Exerc Physiol . 1981 ; 51 ( 1 ): 14 - 8 .
Goslin BR , Rorke SC . The perception of exertion during load carriage . Ergonomics . 1986 ; 29 ( 5 ): 677 - 86 .
Kinsman RA , Weiser PC . Subjective symptomatology during work and fatigue . In: Simonson E , Weiser PC , editors . Psychological aspects and physiological correlates of work and fatigue . Springfield : Charles C Thomas ; 1976 . p. 336 - 405 .
Caffarelli E , Cain WS , Stevens JC . Effort of dynamic exercise: influence of load duration of task . Ergonomics . 1977 ; 20 ( 2 ): 147 - 58 .
Pandolf KB , Burse RL , Goldman RF . Differentiated ratings of perceived exertion during physical conditioning of older individuals using leg weight loading . Percept Mot Skills . 1975 ; 40 ( 2 ): 563 - 74 .
Pandolf KB . Influence of local and central factors in dominating rated perceived exertion during physical work . Percept Mot Skills . 1978 ; 46 ( 3 Pt 1 ): 683 - 98 .
Saha PN , Dutta SR , Banerjee PK , Narayane GG . An acceptable workload for Indian workers . Ergonomics . 1979 ; 22 ( 9 ): 1059 - 71 .
The trial reading is over, you can activate your VIP account to continue reading.