A comparison of Nigerian artisans' cardiorespiratory fitness and physical characteristics as determinants of lung function

Abstract Background Cardiorespiratory and pulmonary health significantly impact global morbidity and mortality. In Nigeria, where unskilled occupations are prevalent, assessing cardiorespiratory fitness (CRF) and lung function among artisans is essential. Objective This study explores the relationships among CRF, pulmonary function, and physical characteristics among male Nigerian artisans in Ile-Ife of age 24 years and above. Methods The study included 225 male artisans aged 24 years and older. Various physical characteristics and lung function parameters were measured. CRF was assessed using the 3-min step test (3MST) alongside spirometry. Statistical analyses, including one-way ANOVA and Pearson’s correlation, were conducted. Results The mean age of participants was 46.21 ± 11.1 years. The mean values for forced expiratory volume in one second (FEV1), forced vital capacity (FVC), and peak expiratory flow rate (PEF) were 2.35 ± 0.71 L, 2.56 ± 0.79 L, and 320.5 ± 124.7 L/min, respectively. Significant differences were observed in mean FEV1 (F(6,218) = 2.527, p = 0.022), FVC (F(6,218) = 2.861, p = 0.011), and PEF (F(6,218) = 6.216, p < 0.001) across occupations. Cardiorespiratory fitness demonstrated a good prediction of lung function with contributions to FVC (49%), FEV1 (58%), and PEF (75%). Significant correlations were also found between weight/BMI and pulmonary function parameters, with age negatively affecting lung function. Conclusion Cardiorespiratory fitness is a significant determinant of lung function among Nigerian artisans, highlighting the complex interplay between physical attributes, CRF, and pulmonary function in this population.