Muscle cramps in cane cutters in British Guiana

In the summer of 1960 a study of the effect of heat on the efficiency of field workers in the sugar industry in British Guiana was undertaken. Sweat loss averaged 598 gm. per hour during the cutting of cane and 897 gm. during the loading procedure. The muscular cramps which occurred in these workers were similar to those of heat cramps in etiology and occurred in about 1 percentof cane cutters in the course of the year (AU)