Sedentary lifestyles, obesity and somatotypes

GCSE PE revision notes, key terms and practice questions.

Sedentary lifestyles

  • A sedentary lifestyle involves little or no physical activity, such as sitting at a screen for long periods.
  • Consequences: weight gain or obesity, heart disease, high blood pressure (hypertension), type 2 diabetes, poor sleep, poor self-esteem, and lethargy (tiredness).

Obesity and performance

  • Obesity is having a lot of excess body fat. It is often measured with the body mass index (BMI), where a BMI over 30 is classed as obese.
  • Obesity limits stamina and cardiovascular endurance, flexibility, agility and speed.
  • It can cause ill health (such as cancer, heart disease and diabetes), depression and low confidence.
  • In a few sports, extra body weight can help, such as sumo wrestling or some positions in rugby.

Somatotypes

  • Endomorph: a pear shape, with wide hips, narrow shoulders and more fat. Suits sports needing a heavy body, such as sumo wrestling or a rugby prop.
  • Mesomorph: a muscular wedge shape, with wide shoulders and narrow hips. Suits sports needing power and strength, such as sprinting or gymnastics.
  • Ectomorph: tall and thin, with narrow shoulders and hips and little fat or muscle. Suits long-distance running or the high jump.
  • Most people are a mixture of the three.

Key terms

Sedentary lifestyle
A lifestyle with little or no physical activity.
Obesity
Having a large amount of excess body fat.
Somatotype
A classification of body shape.
Endomorph
A pear-shaped body type with more fat.
Mesomorph
A muscular body type with wide shoulders and narrow hips.
Ectomorph
A tall, thin body type.
Lethargy
A lack of energy.
Hypertension
High blood pressure.

Practise Sedentary lifestyles, obesity and somatotypes: 11 questions