One of the most common mistakes exercisers make during strength training is
to use momentum. For everyday movements, the use of momentum is normal and adaptive. It is the body’s way of conserving energy, particularly during running, throwing or pushing activities. But during strength training, momentum is counterproductive because it decreases the work a muscle does, thereby decreasing the effectiveness of the exercise. What’s worse, it is dangerous to the joints and spinal cord, since it overloads these areas, causing unnecessary “wear and tear.”
Thacker, S.B., et al. 2004. The impact of stretching on sports injury risk: A systematic review of the literature. Medicine & Science in Sports & Exercise, 36 (3): 371–8.
Purpose. Researchers at the National Center for Injury Prevention and Control and the National Center for Chronic Disease Prevention and Health Promotion systematically reviewed the research literature in order to assess whether stretching effectively prevents sports injuries and to make recommendations for research and prevention.
As a personal trainer, you probably know that exercise has been shown to increase bone strength, as measured by bone mineral density (BMD), in people of all ages. But did you know that the degree to which exercise improves BMD depends on a variety of factors, including age, reproductive hormone status, nutritional status and the nature of the exercise?
Clients who read about the occasional
athlete who suffers from a fatal incident on the basketball court or football field, or the marathon runner who “blows out his knees,” may ask, is exercise really safe? The best answer to that question is, Exercising is safer than remaining sedentary.
Kickboxing continues to be popular among consumers, but fitness professionals have long been concerned about the rate of injuries in classes.
Although researchers have studied
incidence and injury in other fitness
formats, little information has been available on kickboxing injury rates—until now.