State two reasons why humans cannot live without water for a prolonged time.

Outline the body composition requirements of marathon runners.

provides aqueous/water medium essential for all metabolic processes/reactions in the body✔

helps to regulate body temperature✔

provides transportation between and delivery to the body’s tissues✔

helps to maintain blood pressure✔

enables cell to cell communication✔

lubricates joints✔

allows the body to rid itself of wastes ‹excretion›✔

water constitutes about 50% ‹young adult female› and 60% ‹young adult male› total body weight✔

fat-free mass desirable for marathon runners ‹muscular endurance›✔

large fat-free mass made up of muscle is undesirable for marathon runner / additional load impairs performance/they tend to be leaner in body shape✔

relative body fat / higher percentage of fat mass the poorer the performance of the marathoner✔

relatively light / low body mass desirable for marathon runners✔

generally well answered.

responses suggest that candidates need to improve their knowledge, understanding and application of body composition, weight, and sport performance.