Professional paper
https://doi.org/10.31306/s.68.1.6
Development of mathematical models for efficient forecasting of male students’ body dimensions for classroom furniture fabrication
Samuel Oluwasehun Oladapo
orcid.org/0009-0004-0600-9230
; Olusegun Agagu University of Science and Technology, Okitipupa, Nigeria
*
* Corresponding author.
Abstract
Anthropometric measures for Male Secondary School Students (MSSS) in Nigeria are sparsely reported in literature. Consequently, their Classroom Furniture (CF) are designed without recourse to anthropometric dimensions and ergonomic norms. This, perhaps, is because gathering anthropometric data consume sizeable resources. Thus, this study was designed to address these challenges by developing mathematical models for forecasting dimensions required for fabricating compatible CF for MSSS. A total of 232 MSSS aged between 11 and 18 years participated in the study. They were grouped into Lower-Class Male, Middle-Class Male, and Upper-Class Male. Eighteen mathematical models were developed for forecasting Knee Heights (KHT), Elbow Heights (EHT), Popliteal Height (PHT), Shoulder Heights (SHT), Buttock-Popliteal Lengths (BPL), and Hip Widths (HPW) using blend of predictors (stature, waist height, shoulder breadth, lower-arm length and shoulder-arm length) selected by Brute-search force. Statistical significance of the mathematical models’ terms was examined using Analysis of Variance (ANOVA) at 0.95 confidence level. Out of the 18 developed models, nine were quadratic while six and three exhibited two factors interactions and linear relationships respectively. The values of the adjusted co-efficient of determination of the models ranged from 0.902-0.906, 0.876-0.899, 0.881-0.927, 0.899-0.912, 0.950-0.998, 0.933-0.975 for KHT, EHT, PHT, SHT, BPL and HPW while that of their coefficient of variation ranged from 0.150-2.070, 0.225-1.054, 0.100-1.430, 0.170-0.670, 0.190-1.854, and 0.199-0.719 respectively. This suggested that the models display admirable forecasting capabilities and could be employed by CF producers.
Keywords
mathematical models, anthropometric data, male students, waist height, secondary school
Hrčak ID:
346592
URI
Publication date:
27.4.2026.
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