Explanation The following is the rank for the given physical activities based on their effect on increasing bone density: 1. Weight lifting 2. Swimming 3. Tennis 4. Running 5. Cycling 6. Polo 7. Backpacking. Bones respond to physical forces dynamically. They change their size and density based on the type of physical forces they encounter. The above process is called as bone modeling and remodeling. Wolff’s law explains the process of bone modeling and remodeling. “Wolff’s law states that bone strength increases and decreases as the functional forces on the bone increase and decrease respectively”. From, the law it is implied that physical activity causes a strain on the bone which models and remodels them. The strain on the bone changes the bone shape and strength. Based on the Wolff’s law the ranking was given to the given physical activities. Weight lifting ranks first because there is maximum strain on all the long bones of the body. Thus, the strain on the bone is very high. This in turn causes bone modeling and remodeling...

The given activities: running, backpacking, swimming, cycling, weight lifting, polo, tennis according to their effect on increasing bone density and explain the rationale behind the ranking. Concept introduction: Bones provide the structural framework for human body, protects other body tissues, and forms a system of levers for purpose of movement along with muscles. Bone mineral density or bone density is the quantity of minerals present in bones.

EBK BASIC BIOMECHANICS

7th Edition

ISBN: 8220100409455

Author: Hall

Publisher: MCG

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Question

Chapter 4, Problem 4IP

Summary Introduction

To explain: The given activities: running, backpacking, swimming, cycling, weight lifting, polo, tennis according to their effect on increasing bone density and explain the rationale behind the ranking.

Concept introduction: Bones provide the structural framework for human body, protects other body tissues, and forms a system of levers for purpose of movement along with muscles. Bone mineral density or bone density is the quantity of minerals present in bones.

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