Cardiovascular responses and perceived exertion of young adults to head and shoulder load carriage
Keywords:
Cardiovascular responses, perceived exertion, load carrying, rural communitiesAbstract
Objective: To determine the cardiovascular responses and perceived exertion of young adults walking and carrying a load of 10 kg on shoulder and the head.
Method: Healthy participants (n=50) between the ages of 21 and 27 were subjected to three testing sessions at self-selected normal pace without load, and carrying a 10 kg load on the shoulder and on the head for 10 minutes. Cardiovascular parameters and their ratings of perceived exertion (RPE) were measured before and after testing at each session.
Results: Higher pulse pressure (correlates of stroke volume) and rate pressure product (index of myocardial oxygen uptake) values were observed following load on shoulder testing compared to no load testing values and a higher RPE value was observed for load on shoulder testing when compared to load on head testing.
Conclusion: It is conceivable that carrying load on the head can potentially be more economical than carrying load on the shoulder for this cohort of young adults.
References
Young D, Sim R. Control of Cardioac Output. Morgan & Claypool Life Sciences; 2010.
Brown S, Miller W, Eason J. Exercise Physiology: Basis of Human Movement in Health and Disease. Lippincott Williams & Wilkins, Baltimore MD; 2010. 334–360 p.
Mellecker R. Energy expenditure and
Cardiovascular responses to seated and active gaming in children. Arch Paediatr Adolesc Med. 2008;162:886–91.
Borg G. Psychophysical scaling with applications in physical work and perception of exertion. Scand J Work Environ Heal. 1990;16 (suppl:55–8.
William B. Conduction of functyion and functional deline current diogosis and Treatment Geriatrixcs. Second Edi. New York: McHraw-
Hill; 2014. 3–4 p.
McDowell I, Newell C. Measuring health: A Guide to Rating Scales and Questionnaires. 2nd Editio. New York: Oxford University press.; 1996.
Bookman A, Harrington M, Pass L, Reisner E. Family Caregiver Handbook. Cambridge, MA: Massachusetts institute of Technology. 2007.
Lyons J, Allsopp A, Bilzon J. Influence of body composition upon the relative metabolic and cardiovascular demand of load carriage. Occup Med (Chic Ill). 2005;55:380–4.
Knapik J, Harper W, Crowell H, Leirer K, Mull B. Standard and alternative methods of stretcher carriage; performance human factors and cardiorespiratory responses. Ergonomics. 2000;43:639–52.
Ketko I, Hadid A, Yanovich R, Rpstein Y, Heled Y. The Load Carriage Index(LCI)-adjusting the load carried by the soldier according to body composition measurement. Extrem Physiol Med. 2015;4(Suppl 1).
Kanadia S. Head load reducing device. National Innovation Foundation (NIF) [Internet]. 2002.
A v a i l a b l e f r o m : www.nif.org.in/innovation/head_load_reducing_ device_panihari/444 Accessed December 5, 2016.
Keren G, Epstein Y, Magazanik A, Sohar E. The cost of walking and running with and without a backpack load. Eur J Appl Physiol.
;46:317–24.
Bhambhani Y, Maikala R. Gender differences during treadmill walking with graded loads: Biochemical and physiological comparisons. , 81, . Eur J Appl Physiol. 2000;81:71–83.
Wall-Scheffler C, Geiger K, Steudel-Numbers K. Infant carrying: the role of increased locomotory costs in early tool development. Am J Physiol Anthropol. 2007;133:841–6.
Lawrence M, Sing J, Lawrence F, Whitehead R.
The energy cost of common daily activities in African women. J Clin Nutr. 1985;42:753–63.
Cooke C, McDonagh M, Nevill A, Davies C. Effects of load on oxygen intake in trained boys and men during treadmill running. J Appl Physiol. 1991;
Robertson R, Caspersen C, Allison Y, Abott R, Metz K. Differential perception of exertion and energy cost of young women while carrying load. Eur J Appl Physiol. 1982;49:69.
Abe D, Yanagawa K, Niihata S. Effects of load carriage, load position, and walking speed on energy cost of walking. Appl Ergon. 2004;35:329.
Wickler S, Hoyt D, Cogger E, Hall K. Effects of load on preferred speed and cost of transport. J Appl Physiol. 2001;90:1548–51.
Bastein G, Williams P, Legramandi M, Heglund N. Effects of load and speed on the energetic cost of human walking. Eur J Appl Physiol. 2005;94:76–83.
Watson J, Payne R, Chamberlain A, Jones R, Sellers W. The energetic cost of load-carrying and the evolution of bipedalism. J Hum Evol 54; 675683. 2008;54:675–83.
Maloy G, Heglund N, Prager L, Cavagna G, Taylor C. Energetic cost of carrying load: have African women discovered an economic ways? Nature. 1986;319:668.
Griffin T, Roberts J, Kram R. Metabolic cost of generating muscular force in human walking: insights from load carrying and speed experiment. J Appl Physiol. 2003;95:172–83.
Perusse L, Tremblay A, Chaput J, Poiner P, Teasdale N, Drapeau V, et al. Mental work stimulates cardiovascular responses through a reeduction in cardiac parasympathetic modulation in men and women. Bioenergetics. 2012;2(1):107.
McArdle W, Katch F, Katch V. Essentials of physiology. 2nd Editio. philadelphia, PA lippincott, Williams and wilkins; 2000.
Wilmore J, Costill D. Physiology of sport and exercise. 3rd Editio. Champaign, IL: Human kinetics; 2005.
Ganong W. Review of Medical Physiology. 20th Edition, editor. Lippincott, Williams and Wilkins; 2001. 227 p.
Mohrman D, Heller L. Cardiovascular Physiology. 6th Editio. New York: McGraw-Hill; 2006.
Center for Disease Control and Prevention.
Peeceived Exertion (Borg's Rating of Perceived Exertion). National Center for for Chronic Diseases Prevention and Health Promotion., Division of Nutrition Physical Activity and Health. US Department of Hea [Internet]. 2015.
A v a i l a b l e f r o m : www.cdc.gov/physicalactivity/basics/measuring/ exertion.htm Accessed december %0920, 2016.
Ainsworth B. Compendium of physical activities and update of activity codes and MET intensities. Med Sci Sport. 2009;44:213-27
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