Book Cover  Concepts of Physical Fitness 10e   Corbin
Online Learning Center 

Concept 13: Body Mechanics: Posture and Care of the Back and Neck


Concept 13: Body Mechanics: Posture and Care of the Back and Neck

Center of Gravity
  The center of the mass of an object.
  The degree to which the purpose is accomplished.
Herniated Disk
  The soft nucleus of the spinal disk protrudes through a small tear in the surrounding tissue; also called prolapse.
Intervertebral Disk
  Spinal disk (disc); a cushion of cartilage between the bodies of the vertebrae. Each disk consists of a fibrous outer ring (annulus fibrosus) and a pulpy center (nucleus pulposus).
Linear Motion
  Movement in a straight line.
Lordosis (cervical)
  Excessive hyperextension in the neck region ("swayback of the neck").
Lordotic Curve
  Normal curvature of the spine that is necessary for good posture and body mechanics.
Myofacial Trigger Points
  A sensitive spot in the muscle and muscle facia cause by muscle spasms.
Neutral Pelvis
  Proper position of the pelvis to maintain a normal lordotic curve. The pelvis is neither tipped forward or backward but is in stable, neutral position.
  The relationship of body parts, whether standing, lying, sitting, or moving. Good posture is the relationship of body parts that allows you to function most effectively, with the least expenditure of energy and with a minimum amount of strain on muscles, tendons, ligaments, and joints.
Referred Pain
  Pain that appears to be located in one area, while in reality it originates in another area.
Round Shoulders
  The tips of the shoulders are drawn forward in front of the line of gravity.
  Pain radiating along the course of the sciatic nerve in the back of the hip and leg.
  A lateral curvature with some rotation of the spine; the most serious and deforming of all postural deviations.
Trigger Point
  An especially irritable spot, usually a tight band or knot in a muscle or fascia. This often refers pain to another area of the body. For example, a trigger point in the shoulder might cause a headache. This condition is referred to as "myofascial pain syndrome" and is often caused by muscle tension, fatigue, or strain.

HomeChapter IndexNext

Begin a search: Catalog | Site | Campus Rep

MHHE Home | About MHHE | Help Desk | Legal Policies and Info | Order Info | What's New | Get Involved

Copyright ©1998 The McGraw-Hill Companies. All rights reserved. Any use is subject to the Terms of Use and Privacy Policy.
McGraw-Hill Higher Education is one of the many fine businesses of The McGraw-Hill Companies.
For further information about this site contact

Corporate Link