Forty5
EN
Open the app

Sciences

IB Sports, Exercise and Health Science SL and HL

26 lessons at SL. 33 at HL, with every HL-only topic. Five-minute lessons, exam-style questions and timed mock papers.

Start free See plans
Units
11
SL lessons
26
HL lessons
33
Questions
198
Key terms
125
Formulas
15

What you will study

Every lesson follows the current IB guide. Lessons marked HL are in the HL course only. The first unit is free.

Communication2 SL · 3 HL lessons · free
  1. A.1Nerves and motor units
  2. A.1Heart, blood and breathing
  3. A.1Hormones and exerciseHL
Hydration and nutrition3 SL · 4 HL lessons
  1. A.2Hydration and thermoregulation
  2. A.2Macronutrients and diet
  3. A.2Energy systems
  4. A.2Fuel use and RERHL
Response to training3 SL · 4 HL lessons
  1. A.3Acute responses to exercise
  2. A.3Principles of training
  3. A.3Fatigue and recovery
  4. A.3VO₂ max and adaptationsHL
Generating movement3 SL · 4 HL lessons
  1. B.1Bones and joints
  2. B.1Muscles and contraction
  3. B.1Levers
  4. B.1Fibre types and muscle forceHL
Forces, motion and movement3 SL · 4 HL lessons
  1. B.2Describing motion
  2. B.2Newton’s laws and momentum
  3. B.2Projectiles and fluids
  4. B.2Angular motionHL
Injury2 SL · 3 HL lessons
  1. B.3Types of injury
  2. B.3Risk factors and prevention
  3. B.3RehabilitationHL
Individual differences2 lessons
  1. C.1Personality and ability
  2. C.1Confidence and mindset
Motor learning3 lessons
  1. C.2Classifying skills
  2. C.2Information processing
  3. C.2Stages of learning and feedback
Motivation2 lessons
  1. C.3Types of motivation
  2. C.3Goal setting
Stress and coping2 lessons
  1. C.4Arousal and anxiety
  2. C.4Coping and mental skills
Exercise and health1 SL · 2 HL lessons
  1. C.5Physical activity and health
  2. C.5Promoting active lifestylesHL

Try a question

From “Nerves and motor units”.

Questions are in English, like the exam. Every answer comes with an explanation.

What happens to the muscle fibres of one motor unit when its motor neuron fires?

  1. AThey relax
  2. BThey all contract fully
  3. COnly half of them contract
  4. DThey contract with a force matched to the load
Show the answer

B. They all contract fully

All-or-none: a motor unit either contracts completely or not at all. Force is graded by how many units fire and how often.

Start SEHS today.

The first unit is free. No card needed.

Open Forty5