The answer to this question is the term trunk strength. A trunk strength is the ability to use the muscular muscle particularly the abdominal muscles to support the body repeatedly which use muscular exertions. Trunk strength also performs forceful exertions without giving up in doing this activity.
Trunk Strength — The ability to use your abdominal and lower back muscles to support part of the body repeatedly or continuously over time without "giving out" or fatiguing.
