Sweating Of Obese And Lean Prepubescent Boys During Cycling In The Heat

PURPOSE: To compare sweat volume (SV), water balance, and sweat electrolyte concentration and losses in obese and lean boys after cycling in the heat. METHODS: Thirty physically active prepubescent boys (age 9.3+ or -1.1 years) participated in the study. Fifteen were obese (OB) and 15 lean (LB) with respective body mass, height, IMC, %fat and VO2peak of: 48.1+ or -8.3 and 30.3+ or -4.7 kg, 141+ or -6.2 and 135+ or -7.1 cm, 24.9+ or -3 and 16.1+ or -1 kg.m-2, 46.4+ or -14.3 and 15.7+ or -3.6 %, and 34+ or -5.8 and 43.1+ or -6.2 ml.kg-1.min-1). RESULTS: The SV after the 30-min of cycling was similar between OB and LB, with respective means+ or -SD of 280 + or - 50 and 255 + or - 110 ml.