In the field of exercise science, the principle of individual differences has been well established. This principle simply states that because of human uniqueness, all individuals will have a varying response to an exercise stimulus and the ability to increase fitness. The Heritage Family Study and others have demonstrated that heredity plays a major role in determining to what degree an individual responds to and adapts to an exercise stimulus. Physical performance phenotypes—cardiorespiratory endurance and muscle strength—and other muscle performance traits and health-related fitness pheno-types—exercise heart rate, blood pressure, body composition, and insulin and glucose metabolism—have moderate to high heritability values of 25% to 80%. Therefore, given the individual variation observed in these phenotypes and considering that apart from identical twins, no 2 people share ...

  • Loading...
locked icon

Sign in to access this content

Get a 30 day FREE TRIAL

  • Watch videos from a variety of sources bringing classroom topics to life
  • Read modern, diverse business cases
  • Explore hundreds of books and reference titles