Sep
01
2008

Runners Live Healthier Lives

It has been known for some time that exercise is healthy for you. But how do runners do on the long-term? This has been investigated in a recent study spanning 21 years from 1984 to 2003 published in the August edition of the Archives of Internal Medicine. 538 members 50 years or older of a nationwide running club were compared to a sample of 423 healthy controls. In the beginning of the study the members (all males) were 50 years or older. Disability levels were assessed with a health questionnaire and classified into a scale from 0 (no disability) to 3 (unable to perform). Death rates were also determined.The results showed that disability scores were always lower in runners (0.17) than in controls that did not run (0.36), which translated into 39% less disability. In 2003 the death rate was 34% in the controls, but only 15% in the runner group, in other words a 38% better survival of runners compared to the controls. In 2005 a further follow-up showed that the survival curve was still increasing for the runners who had now entered their eighties.

Runners Live Healthier Lives

Runners Live Healthier Lives

The authors of this study pointed out that length of life, health status and disability status can all be significantly improved with regular moderate exercise such as running. Other studies have suggested this as well, but none has followed this up over such a long period (21 years). Increasing healthy lifestyle behaviors will also reduce health care costs and prevent disabilities from chronic diseases.

Choose your fitness activity as reviewed here: http://nethealthbook.com/health-nutrition-and-fitness/fitness/

Reference: Arch Intern Med. 2008;168:1638-1646

Last edited November 5, 2014

Nov
01
2005

More Is Not Always Better In Exercise

Physical activity and good nutrition are the keys for a healthy immune system. Dr. David Nieman, PhD, from the Appalachian State University of Boone, N.C. has found that exercise and nutrition play a strong role in boosting immunity. His past research showed that women who walked briskly for 30 to 45 minutes five days for 12 to 15 weeks had colds half as often as inactive women. This is true even for the aging population, where immunity tends to decline; some research has shown that fit elderly people have better-preserved immune systems.
It is tempting to conclude, that more exercise would lead to even better benefits, but the research results are quite different. Exercising for too long (beyond 90 minutes) appears to cause a steep drop in immune function that can last up to 24 hours. In the 1987 Los Angeles Marathon, Dr. Nieman surveyed 2,311 runners and found those who raced were six times more likely to get sick afterward compared with those who dropped out of the race for non-medical reasons. Runners who trained more than 96 km per week during the two months before a race doubled their chances for sickness compared with those who trained less than 36 km per week.
In lab tests on marathon runners who ran on a treadmill for 90 minutes to 3 hours at 80% aerobic capacity, the level of immune cells had decreased (neutrophils, monocytes, natural killer cells, T cells and B cells). All these players in the immune system leave the blood and concentrate on the effort to do repairs and maintenance on the muscles. As a result the front line soldiers are unavailable for defense when viruses are present.

More Is Not Always Better In Exercise

More Is Not Always Better In Exercise

The best strategies for active as well as not-so-active individuals remain similar.
-Minimize life stresses-mental and emotional.
-Avoid over training and chronic fatigue.
-Curb exercise if you have a fever or systemic infection.
-Eat a well-balanced diet with adequate energy.

More about fitness: http://nethealthbook.com/health-nutrition-and-fitness/fitness/

Reference: The Medical Post, October 11, 2005, page 19

Last edited October 29, 2014