Engineering, 2020, 12, 47-57 https://www.scirp.org/journal/eng ISSN Online: 1947-394X ISSN Print: 1947-3931 DOI: 10.4236/eng.2020.121005 Jan. 19, 2020 47 Engineering Effects of Anthropometry Variations on Physiological Parameters of Heart Rate, Oxygen Consumption, Aerobic Power While Performing Manual Operation at Fixed Vice Height Olusegun Gideon Akanbi 1* , Bukola Olanrewaju Afolabi 2 , Omowumi Adegboye 3 1 Department of Industrial and Production Engineering, University of Ibadan, Ibadan, Nigeria 2 Department of Agricultural and Bio-Environmental Engineering, Federal College of Agriculture, Ibadan, Nigeria 3 Department of General Studies, Federal College of Agriculture, Ibadan, Nigeria Abstract This study investigated the effect of fixed height standing-workstation on dif- ferent people with diverse anthropometry dimensions. Measurements of some anthropometric and physiological parameters are carried out as bases for the calculation of body mass index (BMI) and the determination of the maximum heart rate (HR max ) and aerobic power (VO 2 max) of individual sub- ject while performing manual cutting operation with hacksaw on fixed vice height of 940 mm. Twenty subjects (S1 to S20) parted 2 mm thick square-pipe of 25 mm × 25 mm. Each subject carried out cutting operation in 5 replicates and their physiological parameters during activities are measured to deter- mine their expended energy (EE) and oxygen consumption rate (VO 2 ). The results showed that subject S4 with BMI of 20.76 kg/m 2 has maximum cutting rate of 5.33 stroke/s, while subject S8 with BMI of 23.39 kg/m 2 has minimum cutting rate of 0.92 stroke/s. There was a statistically significant effect on the interaction between BMI, EE and Cutting rate, with F = 827.54, P = 0.000, R 2 = 0.967 and S = 1.749 units. Subject S11 was discovered to have VO 2 (28.54 l/min) and VO 2 max (24.36 ml/min/kg), with highest value of EE (2.94 kcal/min). Wear rates of 1.86 teeth/s and 9.55 teeth/s have the same energy cost (EE = 0.87 kcal/min) but different cutting time of 36.65 s (S18) and 10.89 s (S20) respectively. This could explain in-part that excess 25.76 s utilized in operation time by subject S18 is responsible for keeping approximately 7.7 teeth intact as regards tool management. EE and Tool Wear Rate in one-way analysis of variance, were statistically significant (F = 45.87, P = 0.000, R 2 = 54.69% and S = 1.617 units) at 0.05 level. How to cite this paper: Akanbi, O.G., Afolabi, B.O. and Adegboye, O. (2020) Ef- fects of Anthropometry Variations on Phy- siological Parameters of Heart Rate, Oxygen Consumption, Aerobic Power While Per- forming Manual Operation at Fixed Vice Height. Engineering, 12, 47-57. https://doi.org/10.4236/eng.2020.121005 Received: October 8, 2019 Accepted: January 16, 2020 Published: January 19, 2020 Copyright © 2020 by author(s) and Scientific Research Publishing Inc. This work is licensed under the Creative Commons Attribution International License (CC BY 4.0). http://creativecommons.org/licenses/by/4.0/ Open Access