Typically, after age 30, the brain’s gray matter (the thin layers of cell bodies such as neurons and support cells involved in learning and memory) and white matter (the myelin sheath containing the nerve fibers that transmit signals throughout the brain) shrink in a manner analogous to a person’s cognitive decline. However, a study published in the February 2003 issue of the Journals of Gerontology Series
A: Biological Sciences and Medical Sciences was the first
to show that physical fitness may deter an older person’s loss of these vital brain tissues.
Because load theoretically increases as mechanical advantage increases, the addition of chains or elastic bands to conventional barbell squats had been thought to boost the loading during the ascent phase, but no research had confirmed this notion. A study published in the November 2002 issue of the Journal of Strength and Conditioning Research shows that such a modification is essentially pointless.
By Jennifer Kofoed and Len Kravitz, PhD
ACSM Review: Progression Models in Resistance Training
Following some special guidelines can help you maximize the benefits of resistance training for your healthy adult clients.
has been shown to be task-specific; muscular performance adaptation is influenced by movement patterns and performance speed and specific to the stimuli applied t...
Resistance Exercise and Fat Metabolism
Melanson, E.L., et al. 2002. Resistance and aerobic exercise have similar effects on 24-hour nutrient oxidation. Medicine & Science in Sports & Exercise, 34 (11), 1793-800.
Definitely praise your clients for engaging in even the smallest amount of physical activity. However, don’t let them think that it’s okay to do only the minimum. A recent Harvard study of more than 40,000 men ages 40 to 75 suggested that, the higher the intensity of one’s exercise, the greater one’s chance of avoiding heart disease.
Comparative Effects of Four
Dietary Programs on Weight Loss
and Coronary Risk Factors
Fleming, R.M. 2002. The effect of high-, moderate- and low-fat diets on weight loss and cardiovascular disease risk factors. Preventive Cardiology, 5 (3), 110-8.