Optimum load for carriage by soldiers at two walking speeds on level ground

Pal, Madhusudan; Bhattacharyya, Moushum; Kumar, Ravi Shankar; Majumdar, Dhurjati

doi:10.1016/j.ergon.2008.05.002

Cited by 32 publications

(24 citation statements)

References 35 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…A 10 minutes duration was selected for the experiment in view of the fact that physiological systems take few minutes to get stabilized during continuous activity of same intensity. This phenomenon has been observed by the authors in their previous studies with similar experimental set up (3,16,17). During the experiments, walking speed was fixed at 3.5 km.hr -1 considering the suggestions on optimum speed at HA by previous researchers (i.e.…”

Section: Load Carriage Experimentsmentioning

confidence: 73%

“…During the experiments, walking speed was fixed at 3.5 km.hr -1 considering the suggestions on optimum speed at HA by previous researchers (i.e. 3 -3.5 km.hr -1 ) and keeping in mind the associated difficulties of load carriage under hypoxic conditions (17,18). Modes, magnitude, and the percentage of body weight and placement of the loads are briefed in Table 2.…”

Section: Load Carriage Experimentsmentioning

confidence: 99%

See 1 more Smart Citation

Electromyographic and Cardiorespiratory Responses of Load Carriage at Different High Altitudes with Varying Gradients

et al. 2017

Self Cite

View full text Add to dashboard Cite

Manual load carriage is performed by Indian Army soldiers at different high altitudes (HA) in day to day operation. Such task puts extra stress on cardiorespiratory and skeletomuscular systems. A study was designed to find out the effect of electromyographic and cardiorespiratory responses of load carriage at different high altitudes with varying gradients. Eight healthy Indian infantrymen (mean (± SD) age of 27.2 (± 3.9) years, height of 171.1 (± 2.5) cm, and weight of 66.8 (± 6.7) kg) participated in the study. They were acclimatized at two heights (3550 and 4300 m). On completion of their acclimatization each participant was checked for healthy cardiorespiratory signs and subsequently they walked on a motorized treadmill at a speed of 3.5 km.hr -1 and 0% and 10% gradients under three different experimental load carrying conditions (0, 10.7 and 21.4 kg). Continuous electromyography of three pairs of leg muscles i.e. vastus medialis, gastrocnemius, and tebialis anterior and breath-by-breath recording of oxygen consumption (VO2) and heart rate (HR) were recorded during the experiments. Relative work load (RWL) was calculated from maximum aerobic capacity at respective high altitudes. High altitude had significant effects on the responses of gastrocnemius and vastus medialis muscles as well as on VO2 and RWL. Increased responses of VO2 and leg muscle could be attributed to withstanding the stress of HA and strain of load carriage at steep slopes.

show abstract

Section: Load Carriage Experimentsmentioning

confidence: 73%

Section: Load Carriage Experimentsmentioning

confidence: 99%

Electromyographic and Cardiorespiratory Responses of Load Carriage at Different High Altitudes with Varying Gradients

et al. 2017

Self Cite

View full text Add to dashboard Cite

show abstract

“…The first trial for all subjects was the unloaded walking condition for 10 min. The second trial was walking with normal backpack for 10 min on the treadmill (Liu, 2007;Pal et al, 2009). Lastly all students walked 10 min on the treadmill with counterbalance load backpack after 10 min warm up.…”

Section: Experimental Protocolmentioning

confidence: 99%

The effect of different systems of carrying backpacks on muscle activity

Safikhani¹,

Kamalden²,

Amri³

et al. 2015

jhse

View full text Add to dashboard Cite

Safikhani, H., Fadilah, T., Amri, S., & Ahmad, M. (2015). The Effect of Different Systems of Carrying Backpacks on Muscle Activity. J. Hum. Sport Exerc., 9(Proc2), pp.S692-S698. Introduction: The purpose of this study is to compare the muscles activity in different systems of carrying the load in students and mountain climbers. EMG activity for TA and LD muscles were recorded with surface electrode while walking with different conditions. 26 young students attended three test sections in three days apart. After warm up subjects walked 10 min on the treadmill without backpack as a normal position in the first day. On the second day subjects walked 10 min with normal backpack, and on third day they walked 10 min with counterbalance load backpack. EMG activity of the TA and LD measured during three conditions of walking. One way analysis of variance (ANOVA) was applied on EMG patterns at muscles. The results indicated that there is a significant difference in TA and LD activities after walking with normal backpack and walking without backpack. There is an also significant difference in TA and LD activities between walking with normal backpack and counterbalance backpack. Results also indicated that there is no significant difference between walking without backpack and walking with counterbalance backpack with p<.856. Findings of this study clearly show the advantage of a counterbalance system for carrying the loads. In addition to these, the reduction of muscle activity is a considerable kinematic and ergonomic benefit of carrying load in such backpacks.

show abstract

“…In addition, no such study has been carried out regarding Malaysian military subject to the matter discussed. Researchers conducted regarding load analysis include load magnitude, spine injury and posture [8], [20], [23], effects of load distribution [5], load posture and gait [2], load and GRF [3], [13], rifle carriage and human gait [4], load carriage effects on lower limb [29], soldiers load carriage [15], determining optimum load [10], [22], postural sway [11], load and walking gait [12], [17], [18] and load and trunk movements [16], [21]. Malaysian military soldiers with usually smaller build-up size without exception have to carry heavy load up to 50 kg or more.…”

Section: Introductionmentioning

confidence: 99%

“…FDA has been applied to various fields such as in biology and chemistry [28], plankton analysis [14], lactate curves in Biology and Medicine [19], gait analysis [27] and kinematic data [6]. Other methods like one-way ANOVA [22], one-way MANOVA [3], principal component analysis [17] and many more have been used in analysing load data but not FDA. Prior to this paper, an analysis for trial experiment on load GRF data by using FDA has been completed [7].…”

Section: Introductionmentioning

confidence: 99%

Load carriage analysis for military using functional data analysis technique : registration and permutation test

Din

Rambely

Jemain

2014

IJBAS

View full text Add to dashboard Cite

This paper focused on the analysis of ground reaction force (GRF) of load carriage for military through functional data analysis (FDA) technique. The main objective of the study is to investigate the effect of 10% bodyweight (BW) load increment for normal walking through FDA method. The experiment on GRF was carried out by ten healthy military soldiers aged 31 ± 6.2 years old; weighing 71.6 ± 10.4 kg with the height of 166.3 ± 5.9 cm. Data was captured using Vicon 1.4 motion analysis system, Kistler force plates and thirty nine body markers attached to the subjects. FDA method mainly B-spline basis formation, time normalization, smoothing, curves registration and permutation tests were applied to analyze the data. The results confirmed that FDA did provide a better technique of smoothing to produce quality data in an easy manner. From this paper we conclude that registration did significantly align all the curves according to curves features providing a better way of distinguishing the amplitude of load increment. Finally, permutation tests confirmed that 10% BW load increased from 0% BW to 40% BW, have significant effect on soldiers regarding their load carriage and GRF.

show abstract

Optimum load for carriage by soldiers at two walking speeds on level ground

Cited by 32 publications

References 35 publications

Electromyographic and Cardiorespiratory Responses of Load Carriage at Different High Altitudes with Varying Gradients

Electromyographic and Cardiorespiratory Responses of Load Carriage at Different High Altitudes with Varying Gradients

The effect of different systems of carrying backpacks on muscle activity

Load carriage analysis for military using functional data analysis technique : registration and permutation test

Contact Info

Product

Resources

About