try to answer as qustions

try to answer as qustions

1-Explain the differences between the static and dynamic work demands?

2-State and explain three types of muscle contractions?

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Explain the differences between static and dynamic work demands?

In the industrialized countries, there are approximately 20% of the employees working in jobs that require muscle efforts. According to Veikko and Juhani(2011), in dynamic work, the vigorous skeletal muscles contract and relax in a rhythm resulting in movement, which is less tiring and more efficient.

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