HUMAN BIOLOGY:CONC.+CURRENT..(LOOSE)
HUMAN BIOLOGY:CONC.+CURRENT..(LOOSE)
7th Edition
ISBN: 9780321862525
Author: Johnson
Publisher: PEARSON
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Chapter 6, Problem 4AWK
Summary Introduction

To review:

The rationale behind the thinking that muscles do not actively push the weight up during leg presses.

Introduction:

Muscles create movements or resist movement depending on their location and the task. The primary action of the muscles is a contraction. When the skeletal muscles contract, they pull the bone attached to them, while the joint acts as a lever. The movement of the bones creates displacement and the work is done. However, the muscles also oppose the movements.

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