At same time have a greater blood flow to active muscle in tasks requring large minute volume i.e. high intensity endurance activities. Submax VE is higher at any given workload means less efficient than adults may explain higher energy cost of submaximal work. Rmax is lower and vt is at a higher percentage of max o2 consumption. Children may rely more on aerobic metabolsim to met enrgy needs RPE lower in children why need to acclimate at slower rate Thermoregulatory Greater body surface area greater rate of exchange between skin and environment. In climatic extremes, children are at increased risk of stress.
Body cools quickly in water due to higher body surface and low subcutaneous fat.
Leads to potential for hypothermia Body core temp is greater in children during exercise so want to make sure to hydrate well during prolonged activity. As well as prior to and after. Adolescents Prepubescent children should be consider to respond as a child. Post pubescent will have similar responses to exercise as adults. Ex effect on growth and bilogical maturation .