By Len Kravitz, PhD
Exercise and Resting Blood Pressure
igh blood pressure, also known as hypertension, is a major health problem affecting 43 million Americans--approximately 24 percent of the U.S. population (Kelley & Kelley 2000). High blood pressure kills more than 37,000 Americans each year and contributes to the deaths of 700,000 individuals (Neiman 1998). It is define...
B Y J E F F R E Y M . J A N OT, M S, A N D L E N K R AV I T Z , P H D
Maxim izing Functional Abilities in the Older Adult
A research review comparing the benefits of resistance versus cardiovascular training.
What is the biggest challenge facing our nation's health care system in this new century?
Some might guess it is finding a cure for ravaging diseases, such as cancer, or meeting the l...
physical activity and fitness for persons with disabilities
By Janet A. Seaman, PhD
A Paradigm Shift Historically, the approach to physical activity for people with disabilities has been couched in medical rationale and focused on rehabilitation. Whereas physical education (physical training) has been a part of school curriculum for nearly 100 years, the original orientation was to supplement ...
BY JESSICA SMITH, ME
How to encourage safe and effective resistance exercise in all your female clients.
Strength Training for Women
It is no secret that strength training is one of the most popular activities in fitness facilities today. According to one estimate by the International Health, Racquet and Sportsclub Association, the number of adults training with weights has increased by 75 perc...
By Jeff M. Reynolds and Len Kravitz, PhD
Resistance Training and EPOC
fter cardiovascular exercise or weight training, the body continues to need oxygen at a higher rate than before the exercise began. This sustained oxygen consumption is known as excess postexercise oxygen consumption (EPOC). Originally referred to as oxygen debt, this postexercise state was first hypothesized ...
Heidi M. Weingart, MA, and Len Kravitz, PhD
Resistance Training and Bone Mass
esearch has begun to emphasize the potential benefits of adding resistance training to an exercise regimen, especially for elderly persons. Among the benefits for seniors are improved strength, bone mineral density and daily living performance, which can raise independence for this population while low...
By Derek Marks, MS, and Len Kravitz, PhD
Hormones and Resistance Exercise
ormones play a large role in the muscle hypertrophy and strength gained from resistance exercise. While hypertrophy and strength gained in men are attributed to increased levels of testosterone, it is still unclear how women are able to respond similarly to resistance training in the absence of increas...
By Karen Asp, MA
Get Tough With Tubing
ith so much new equipment emerging all the time, it's easy to forget about those tried-and-true elastic tubes and bands. But guess what? They are making a strong comeback in group fitness classes. And for a good reason: Used well, they really work! If you review a few principles and get a creative jumpstart, you can rediscover elastic resistanc...
By Todd Astorino, MS, and Len Kravitz, PhD
Glycogen and Resistance Training
he role of glycogen (stored carbohydrate in muscle) in aerobic exercise has been associated with increased work output and duration (Haff et al. 1999). Carbohydrate is the body's preferred substrate during endurance exercise, due to its efficient energy yield per liter of oxygen consumed. Previous re...
Knowing how to identify physical components important for sports performance--and understanding when and how to train those components--can make a trainer's services indispensable to athletic clients.
By John A. Blievernicht, MA
ore and more athletes are using personal fitness trainers to improve their proficiency in a variety of sports. Trainers with the ability to perform sports moves analy-...