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...
The ultimate goal of
pregnancy is a positive outcome--that is, a healthy mother and child. One way fitness professionals can help pregnant women ensure a positive outcome is to encourage them to exercise. Over the last few decades, researchers have established not only that exercise during pregnancy is safe, but also that it promotes the health and well-being of both the infant and the mother. ...
By Len Kravitz, PhD
Exercise and Psychological Health
esearch literature continues to expand in support of the major health benefits associated with regular physical activity and exercise, including reduced risk of cardiovascular disease, hypertension and stroke, as well as protection against some cancers and osteoporosis. Yet there also is a growing body of knowledge that subst...
By Paula Anderson, MS
The Active Range Warm-Up:
Getting Hotter With Time
n the early days of group fitness when everyone wore leg warmers and exercised to Jane Fonda tapes, the warm-up portion of a typical cardio conditioning class included moves borrowed from ballet, jazz dance and yoga. Unending head turns, pli...
By Christopher C. Frankel and Len Kravitz, PhD
eriodization is an organized approach to training that involves progressive cycling over a specific period of time. The roots of periodization stem from Hans Selye's General Adaptation Syndrome model, which has been used by the athletic community since the late 1950s (Fleck 1999). Selye identified two sources of biolog...
By Pa t t i T ve i t M i l l i g a n , M S , R D
What you need to know to help your athletic clients stay on top of their unique nutritional needs.
or athletes engaged in serious physical conditioning, nutrition can be crucial. Proper nutrition can improve endurance, speed recovery from exertion, lower the risk of injury and assist in rehabilitation. By keeping up wit...
newsletter_teaser: Extreme conditioning programs promise vastly improved fitness in relatively short periods of time, which appeals to a cross-section of exercisers. Yet many health professionals fear that these high-powered programs increase the risk of injury.
Walking approximately 6–9 miles a week is associated with increased gray matter in the brains of older adults, according to a study published in Neurology (2010; 75 , 1415–22) “Just by walking regularly, and so maintaining a little bit of moderate physical activity, you can reduce your likelihood of developing Alzheimer’s disease and [can] spare brain tissue,” Kirk I. Erickson, lead study author and assistant professor of psychology at University of Pittsburgh [Pitt] in Pennsylvania, told HealthDay.newsletter_teaser: Just by walking regularly, and so maintaining a little bit of moderate physical activity, you can reduce your likelihood of developing Alzheimer’s disease and [can] spare brain tissue,” Kirk I. Erickson, lead study author and assistant professor of psychology at University of Pittsburgh [Pitt] in Pennsylvania, told HealthDay.
Barefoot running has become increasingly popular. Many runners turn to minimalist footwear in the hope of mimicking barefoot running, but with more protection. But is running in minimalist shoes biomechanically similar to going barefoot?
No, say researchers from various Australian universities.
If your coffee habit exceeds three regular cups per day, it might be time to scale back your consumption, especially if you are younger than 55.
New research in the Mayo Clinic Proceedings [published online August 9] studied more than 40,000 individuals and found a statistically significant 21% increased mortality risk in those drinking more than 28 cups of coffee a week, with the risk being greater than 50% in men and women younger than 55. No adverse effects were found in heavy coffee drinkers aged over 55.
newsletter_teaser: If your coffee habit exceeds three regular cups per day, it might be time to scale back your consumption, especially if you are younger than 55.