Comparative Analysis of Various Anthropometric Dimensions for Male Agricultural Farm Workers in different Regions of India

BACKGROUND Six-minute walk test is a simple and objective tool for functional assessment of patients with cardiopulmonary disease. Healthy population-based reference equations to predict 6MWD show wide variations from region to region. Our study derives reference equations for the northeastern population of India. METHODS 150 healthy, non-smoker subjects aged 18-60 years were enrolled. Spirometry and 6MWT was done for all subjects according to the American Thoracic Society prescribed protocol. Pearson correlation and subsequently stepwise multiple regression analysis was used to develop the reference equations. RESULTS The mean six-minute walk distance (6MWD) for males was 503.39 ± 31.95 meters which was significantly more than that for females which was 454.19 ± 36.46 meters (p= 0.001). The regression equation derived in our study shows age, height and weight as the most important predictors of the 6MWD. The predictive equations derived are-Males: 6MWD= 377.18-[1.235 x Age (yr.)] + [1.006 x Height (cm)]; r2= 0.427, p<0.001 Females: 6MWD= 129.75-[0.510 x Age (yr.)] + [2.186 x Height (cm)]; r2= 0.375, p= 0.028. Alternative equations derived-Males: 6MWD= 381.52-[1.235 x Age (yr.)] + [0.963 x Height (cm)] + [0.062 x Weight (Kg)]; r 2 =0.427, p<0.001; Females: 6MWD= 107.255-[0.430 x Age (yr.)] + [2.451 x Height (cm)]-[0.421 x Weight (Kg)]; r 2 =0.38, p= 0.064. Reference equations from other regions of the world over-predicted the 6MWD for our population probably due to anthropometric and demographic variations. CONCLUSIONS The 6MWD shows considerable variability according to anthropometric, cultural and social characteristics of the population studied. The regression equation derived in our study shows age and height as the most important predictors of the 6MWD. There is over prediction of 6MWD by equations from Western and other Asian studies. The gender specific equations derived in our study from this region may thus help in the assessment of patients with chronic cardiorespiratory diseases by providing correct reference values of normal.

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“…In general, people from North east India are shorter and of smaller built compared to the mainstream Indian population. 13…”

Section: Discussionmentioning

confidence: 99%

Reference Equations for the Six-Minute Walk Distance in Healthy North-East Indian Population Aged 18-60 Years

Kshetrimayum¹,

Wangkheimayum²,

Renthlei³

et al. 2019

jebmh

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Analysis of Forces generated in Human Body segments for Real time Space flight

Kiran

Raghuraman

2021

IOP Conf. Ser.: Mater. Sci. Eng.

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Human body modelling for a space travel is a significant task to be considered for analyzing the forces generated on the human body segments. During the flight from earths atmosphere due to high escape velocity and acceleration, huge reaction forces will be generated on body segments which are beyond human capacitance. Recent studies evaluated the forces generated in various body segments by equipping external sensor vest or strips around the body parts where the application is limited for several on ground operations like hopping, sitting etc. and few studies analyzed the theoretical forces by modelling the human body as a second order spring mass damper system. The main objective of this work is to analyze the forces experienced by the human body segments for like Head, Neck, Upper Torso, Central Torso and Lower Torso for real time space flight data. The analysis is done on the anthropometric data of 50th percentile male US citizens available in literature by considering the human body as a second order spring mass damper system and the real time space flight parameters are taken from STS-121 space shuttle launched from Kennedy Space centre on July 4th 2006. The obtained resultant forces are plotted against the time of flight and it is observed that high forces are generated on Central Torso compared to remaining body parts and are varying with altitude of the vehicle.

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Comparative Analysis of Various Anthropometric Dimensions for Male Agricultural Farm Workers in different Regions of India

Cited by 2 publications

References 7 publications

Reference Equations for the Six-Minute Walk Distance in Healthy North-East Indian Population Aged 18-60 Years

Reference Equations for the Six-Minute Walk Distance in Healthy North-East Indian Population Aged 18-60 Years

Analysis of Forces generated in Human Body segments for Real time Space flight

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