Physiological Performance and Work Capacity of Sudanese Cane Cutters with Schistosoma Mansoni Infection

作者：Kenneth John Collins, R. J. Brotherhood, Claire Davies, Caroline J Doré, Arthur J Hackett, F. J. Imms, Jan Musgrove, J. S. Weiner, M. A. Amin, Mutemainna Karim, H. Ismail, A. H. S. Omer, M.Y. Sukkar · 发表于：American Journal of Tropical Medicine and Hygiene · 年份：1976 · DOI：10.4269/ajtmh.1976.25.410 · 被引用次数：43 · 研究领域：Parasites and Host Interactions、Helminth infection and control、Trypanosoma species research and implications

Physiological tests of work performance and measurement of field productivity were made in 194 Sudanese cane cutters in order to study the effect of Schistosoma mansoni infection. The cane cutters were selected from two age ranges (16-24 and 25-45 years) and subdivided into three clinical groups: not infected, infected with, and infected without clinical signs of hepatosplenomegaly. Men infected with Schistosoma haemotobium, malaria (blood film), or with hemoglobin levels less than 10 g/100 ml were excluded. There was a statistically significant (P less than 0.002) higher mean hemoglobin concentration in those not infected but the mean difference was less than 1 g/100 ml. Submaximal responses to exercise on a stationary bicycle ergometer, oxygen intake, ventilation, tidal volume, cardiac frequency and estimated maximal aerobic power output calculated both in absolute terms and relative to lean body mass and leg volume were similar in the six groups of cane cutters. No significant differences were found in physique, body composition or in thermoregulatory function tests. The cane cutters were found to have little natural acclimatization to heat in terms of sweating capacity when compared with a group of fully acclimatized Sudanese soldiers. The mean productivity (mean daily weight of cane cut per man) was significantly correlated with the individual's estimated maximum aerobic capacity determined in the laboratory, but not with the degree of S. mansoni infection. The noninfect...