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Core Understanding Energy & Power Kinetic energy is energy of motion. A rubber band flying through the air has kinetic energy. When you are walking or running your body is exhibiting kinetic energy. Potential energy is converted into kinetic energy. Before the yo-yo begins its fall it has stored energy due to its position. At the top it has its maximum potential energy. As it starts to fall the potential energy begins to be changed into kinetic energy. At the bottom its potential energy has been converted into kinetic energy so that it now has its maximum kinetic energy. A waterfall has both potential and kinetic energy. The water at the top of Bridal Veil Falls has stored potential energy. When the water begins to fall, its potential energy is changed into kinetic energy. This change in energy also happens at Niagara Falls where it is used to provide electricity from the transformation of mechanical and electromagnetic energy to parts of the northeastern United States.
Low Back Pain The lower back is an elegant construction of bone, muscle, and ligament. Because the lower back is the hinge between the upper and lower body, it is especially vulnerable to injury when you are lifting, reaching, or twisting. When low back pain strikes, we become acutely aware of just how much we rely on a flexible, strong back. Ironically, most of us don't think of the importance of keeping our back and stomach muscles strong until we have back trouble. See an illustration of the lower back (lumbosacral region of the spine)
Up to 85% of all people have low back pain at one time or another. Each year, about 2% of American workers are compensated for disability caused by back pain.1 Low back pain is often triggered by some combination of overuse, muscle strain, or injury to the muscles and ligaments that support the spine. Less commonly, low back pain is caused by illness or spinal deformity.
How to Save Your Back Always try to maintain the natural curves in your back. These curves provide strength and support for your back. This is especially important when lifting or when sitting for long periods. Hinge at your hips and bend your knees when lifting. You should be doing most of the work with your legs rather than with your back! Placing your feet shoulder-width apart will help you stay balanced. A wider stance can also help if you have difficulty bending your knees. Tighten your stomach muscles before you lift. They help support and stabilize your back when you lift.
Spinal Cord Trauma
Alternative names Definition Return to top Spinal cord trauma is damage to the spinal cord that results from direct injury to the cord itself, or from indirect injury from damage to the bones, soft tissues, and blood vessels surrounding the spinal cord. Causes, incidence, and risk factors Return to top Spinal cord trauma can be caused by any number of injuries to the spine. They can result from motor vehicle accidents, falls, sports injuries (particularly diving into shallow water), industrial accidents, gunshot wounds, assault, and others.
Efficacy of Ergonomics Historically, Ergonomics was another name for Human Factors. Today, Ergonomics commonly refers to designing work environments for maximizing safety and efficiency. Biometrics and Anthropometrics play a key role in this use of the word Ergonomics. Engineering Psychology often has a specialty dealing with Workplace or Occupational Ergonomics. Companies once thought that there was a bottom-line tradeoff between safety and efficiency. Now they embrace ergonomics because they have learned that designing a safe work environment can also result in greater efficiency and productivity. Recently, U.S. laws requiring a safe work environment have stimulated great interest in Workplace Ergonomics - from ergonomic furniture to ergonomic training. But it is in the design of the workplace as a whole where the greatest impact can be seen for both safety and efficiency.
Core Stability Although the world's top golfers rely on an indefinable combination of concentration, physical endurance, skill and consistency to remain at the top of their game, the application of strength and conditioning know-how in the area of core stability is beginning to make an impact in the sport... The functional result of good core stability is that when an athlete is performing sporting movement or technique, they are able to maintain the correct posture and alignment, particularly in the lumber spine and pelvic area - key areas in any golf swing.
By maintaining correct posture and alignment, the athlete should have better technique. In a sport like diving, or gymnastics which is dependent to an extent on aesthetics, an athlete would look more controlled. In a running event, enhanced core stability would mean that an athlete would be able to apply force more efficiently, while also helping to reduce the risk of any injury. How "Core Stability" can protect your back Modern life for most of us has meant a steady reduction in physical activity and an increasing sedentary lifestyle. This has been due to a decrease in manual labour, the increase in labour-saving devices and the rise of more passive entertainments such as computer games and television. Unfortunately this means that once strong muscle systems that helped us maintain good posture and movement while helping us avoid injury have grown weak through lack of use and exercise. In short we have reduced our "core stability". What is "core stability"? Core stability and sports
Core Stability Training How to build a strong foundation Core stability training is essential to sports performance and injury prevention. The body's core muscles are the foundation for all other movement. The muscles of the torso stabilize the spine and provide a solid foundation for movement in the extremities. These core muscles lie deep within the torso. They generally attach to the spine, pelvis and muscles that support the scapula. When these muscles contract, we stabilize the the spine, pelvis and shoulders and create a solid base of support. We are then able to generate powerful movements of the extremities.
Lifting Safety: Tips to Help Prevent Back Injuries Have you checked the object before you try to lift it? * Test every load before you lift by pushing the object lightly with your hands or feet to see how easily it moves. This tells you about how heavy it is. Return to top * Make sure the weight is balanced and packed so it won't move around. Return to top * Be sure you have a tight grip on the object before you lift it.
Low Back Pain Exercise Guide Regular exercises to restore the strength of your back and a gradual return to everyday activities are important for your full recovery. Your orthopaedic surgeon and physical therapist may recommend that you exercise 10 to 30 minutes a day one to three times a day during your early recovery. They may suggest some of the following exercises. This guide can help you better understand your exercise and activity program, supervised by your therapist and orthopaedic surgeon. Initial Exercise Program Ankle Pumps - Lie on your back. Move ankles up and down. Heel Slides - Lie on your back. Slowly bend and straighten knee. |
