Spatial summation
What Spatial summation means in Physical Education A-Level, as defined for AQA.
Definitions of Spatial summation
Exam boards and our study guides word this term in slightly different ways. Learn the version your board uses.
Check what you remember
Read the wording for your board, then hide it and explain Spatial summation in your own words. Rough notes are fine. This is a self-check, with no mark or grade.
Reference: AQA
Summation through motor unit recruitment, which differs from summation that depends on impulse frequency on one fibre.
The recruitment of additional or larger motor units to increase the overall force of a muscle contraction.
Topics that use Spatial summation
- Neuromuscular system (AQA A-Level)
Related terms
- Aerobic and anaerobic ATP resynthesis
- Aerobic ATP resynthesis
- Aerobic oxidation
- All-or-none law
- Calcium ion retention
- Calcium ions
- Endurance activity performance
- Fast glycolytic (type IIx)
Using Spatial summation in the exam
Check the command word and mark scheme for your exact question. After comparing your explanation with the reference, use the term in an answer on the linked topic. This practice does not predict an exam mark.
Practise Physical Education questions
Create a free account to answer exam-style questions on this topic and get feedback on your answers.
A week of Premium from your first lesson · Then the free plan continues · No card, no charge