CSCS
Exam Review
Course Schedule Announced
Save Time, Save Money: Order E-mail Versions of Educational Programs
FitBits
August 15, 2005
Exercise
ETC's Review of
Exercise Related Research
Compiled by
Jeannie Patton, MS, CSCS
Dehydration May Improve
Anaerobic Performance
It is well established that dehydration impairs long distance running performance, but some research has shown that dehydration does not necessarily affect anaerobic performance. In fact it is theorized that short distance sprints and vertical jumps may actually improve due to the slightly lower body weight associated with dehydration. The purpose of this study was to determine if sprint and power performance was altered after diuretic-induced dehydration.
Nine healthy young males who were former sprinters served as subjects. All had exercised at least 3 days per week for the past 8 weeks and attended sprint practice sessions twice a week for two weeks to minimize performance variations. Tests consisted of vertical jumps and sprints of 50, 200 and 400 meters.
The subjects were administered a diuretic which induced dehydration and resulted in a 2 to 2 ½ per cent reduction of body mass, which did not alter performance in either the sprints nor the vertical jump. The results of this study indicate that, mild dehydration does not affect sprint and power performance as much as it affects aerobic performance. The theoretical benefit of reduced body mass due to dehydration in sprint and power performance remains to be seen.
Watson, Gregg et al. Influence of Diuretic-Induced Dehydration on Competitive Sprint and Power Performance. Medicine & Science in Sports & Exercise. 2005, 37(7), 1168-1174.
Resting
Energy Expenditure
Predicts Bone Mineral Density
Better than Body Weight
A number of studies have reported a positive correlation between body size and bone mineral density in women of diverse ethnic groups, but the relationship between bone mineral density and resting energy expenditure has not been studied. The purpose of this study was to determine the correlation between resting energy expenditure and bone mineral density independent of body size, lean body mass and physical activity.
A total of 400 overweight, post-menopausal African American women served as subjects. Tests consisted of body composition, resting energy expenditure, bone mineral content and bone mineral density. Interestingly, the results showed a stronger correlation between resting energy expenditure and bone mineral density than between bone mineral density and body weight.
The results of this study indicated that increased resting energy expenditure was the best indicator for increased bone mineral density. The researchers speculated that this may be due to an increase in mechanical loading due to larger body size or possibly to the increased levels of estrogen associated with higher levels of adipose tissue.
Afghani, Afrooz et al. Resting Energy Expenditure: A Better Marker than BMI for BMD in African-American Women. Medicine & Science in Sports & Exercise. 2005, 37(7), 1203-1210.
Practice
of Yoga
Helps to Keep Weight Off
It is well documented that most Americans gain weight in middle age, yet the researchers in this study of over 15,000 Americans between the ages of 53 and 57 found that middle aged Americans who participated regularly in yoga maintained their body weight better than their non-yoga practicing peers. The study’s authors found that regular yoga participants lost 5 pounds over ten years while their sedentary counterparts gained 13 pounds in the same period.
Even though the calories burned during a yoga session do not equal those burned during other types of more strenuous exercise, the researchers speculated that the weight loss associated with yoga comes from improved stress management and from being more in tune with good eating habits and inappropriate lifestyle choices.
Kristal, Alan R et al. Yoga Practice Is Associated With Attenuated Weight Gain in Healthy, Middle-Aged Men and Women. Alternative Therapies in Health and Medicine, July/August, 2005.
CSCS Exam Review
Course Schedule Announced
Our popular exam review courses for NSCA’s Certified Strength & Conditioning Specialist exam will be offered this Fall across the country. These Exam Review courses are designed specifically to help you prepare for the CSCS examination. We are so confident that this program will prepare you to pass the CSCS test that we offer you this guarantee: If you do not pass the CSCS test after completing our training course you may retake the class free of charge.
We’ll be offering this special review class this fall in the following cities: Chicago, Fort Lauderdale, Los Angeles, New York, and San Francisco.
For
details, visit: www.exerciseetc.com
Save
Time, Save Money:
Order E-mail Versions of
Educational Programs
Many of our most popular correspondence courses and exam review materials are now available in e-mail format. This means that when you order these programs we will simply e-mail them directly to you within 1 business day, and you pay no shipping charges!
For
details, visit: www.exerciseetc.com
To
unsubscribe or change your options,
scroll to the bottom of this newsletter
and click on the link.
©
2010 Exercise ETC Inc.
1881 NE 26 Street # 202
Ft. Lauderdale, FL 33305
(p) 800-244-1344
(f) 954-566-3937
info@exerciseetc.com