Obesity is an enormous problem of epidemic proportions in this country. Factors such as changing eating habits (from healthy to “fast, fatty, and excessive”) and a sedentary lifestyle (for children as well as adults) have contributed to the obesity problem. It is also postulated that excessive consumption of fat creates failures in the signal transmitted by neurons controlling satiety in a region of the brain called the hypothalamus, and that these failures can lead to uncontrollable food intake and, consequently, obesity.

The researchers demonstrated that exercising (in this case exercising obese rodents) showed signals of restored satiety in hypothalamic neurons and decreased food intake. These findings confirmed that physical activity contributes to the prevention and treatment of obesity, not only by increasing energy expenditure, but also by modulating the signals of satiety and reducing food intake.

So, there you go, another good reason to exercise brought to you by your friendly chiropractor in San Jose!

Source:
PLoS Biology

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Researchers found that of the “least-fit” versus the “slightly more fit” in a recent study of nearly 4,400 healthy U.S. adults, roughly 20 percent with the lowest physical fitness levels doubled the risk of dying over the next nine years as the 20 percent with the next-lowest fitness levels. (In other words, those 20 percent who were nearly at the lowest fitness levels.) This is the familiar “bad news/good news” type of result. It is obviously bad news if you are a confirmed couch potato. However, it is genuinely good news for those who haven’t quite hit rock bottom in the sedentary lifestyle department but are not, by any stretch of the imagination, “exertive.” Apparently, those individuals who stay just moderately fit as they age may have greater longevity than those who are entirely out-of-shape, the study suggests.

Between 1986 and 2006, researchers assessed the fitness levels of 4,384 middle-aged and senior men and women during exercise treatmill tests. For approximately nine years thereafter, the researchers observed the study groups progress. The study considered such factors like obesity, high blood pressure and diabetes. This, in and of itself, highlights the importance of being physically fit. In an email to Reuters Health, lead researcher, Dr. Sandra Mandic of the University of Otago in Dunedin, New Zealand, stated: “Our findings suggest that a sedentary lifestyle, rather than differences in cardiovascular risk factors or age, may explain the two-fold higher mortality rates in the least-fit versus slightly more fit individuals.”

Nearly two-thirds of the least-fit study participants were not getting the minimum recommended amount of exercise, which is at least 30 minutes of moderate activity (like brisk walking) five or more days a week. “These results emphasize the importance of improving and maintaining high fitness levels by engaging in regular physical activity,” Mandic said, “particularly in poorly-fit individuals.”

After dividing the participants into five groups based on fitness levels, the researchers discovered that 13 percent of those who were in slightly better shape had died during the study period. However, 25 percent of the least-fit participants had died during the same period. Only 6 percent of the most-fit group (i.e., the ones who “hit the nail on the head,” so to speak) had died during the follow-up period.

The compelling finding was that overall, the five fitness-level groups showed little dissimilarity in their reported exercise routines over their adult lives, but where they contrasted was their activity levels in recent years. “Since it is recent physical activity that offers protection,” Mandic said, “it is important to maintain regular physical activity throughout life.”

And, naturally, imagine the health benefits we could all obtain if we sought to achieve the higher levels of fitness.

SOURCE: Medicine and Science in Sports and Exercise, August 2009.

Technorati Tags: exercise, longevity, middle age, physical fitness, Where:San-Jose-CA

According to the US Consumer Products Safety Commission exercise-related injuries and injuries sustained through the use of exercise equipment sent more than 166,000 people in the 45-64 age group to the emergency room, clinic or doctor’s office in 2008. Though middle-aged people today are a lot more active than their parents were, and are basically more fit and athletic longer into their lives, older athletes need to take a few precautions to protect themselves from injuries like rotator cuff tears, tendonitis and stress fractures.

Though most of the injuries in the Consumer report appear to be due to people not giving themselves enough time to rest up after tough workouts, Monto and AAOS offer a number of helpful tips to avoid exercise injuries: Check with your physician before starting any type of exercise program (your doctor can make sure you’re healthy and offer advice on sports and activities that fit your fitness level). Don’t do the same workout day after day (this will help to avoid repetitive stress injuries and eliminate chronic injury patterns). Work on your flexibility (it’s crucial to stretch and warm up before a workout, and cool down and stretch again, the AAOS advises). And, be sure to schedule days off into your exercise regimen, especially after a particularly intense workout.

So, Baby Boomers, even though you may feel young, it’s still wise to take extra precautions to protect your body when you’re active. After all, wisdom comes with aging.

Full article by Anne Harding (Reuters Health)

ORIGINAL SOURCE: American Academy of Orthopedic Surgeons, June 22, 2009.

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As our age-related risks of chronic disease increase, regular physical activity can actually slow down the trend. In addition, research has shown that people who have already developed coronary artery disease, osteoarthritis, high blood pressure, chronic obstructive pulmonary disease (COPD), Type 2 diabetes, and other age-related chronic diseases can benefit substantially by increasing their physical activity and, therefore, often can manage their chronic illness with fewer medicines.

Furthermore, some studies suggest that the cardiovascular benefits an individual gets from physical activity may also help the brain stay healthy. “Physical activity influences the frontal region of the brain,” says Dr. Bradley Hatfield, professor of Sports Psychology at the University of Maryland, College Park. So, if you’ve been wondering what the best thing is that you can do to keep your brain young, the answer may be for you to take a long walk. A key factor is that exercise thickens the brain tissue and builds more synapses in the brain.  The brain has 10 billion nerve cells, called neurons, and on average, neurons are connected to each other through 10,000 synapses.  Every time we exercise, more synapses form and the active brain gets stronger.

On a regular basis, being physically active increases the quality of life (period). Some of the benefits include improved energy levels, mental sharpness, balance, strength, flexibility, and weight control. Moreover, regular aerobic exericise has been shown to help in the management of depression, anxiety, and stress.

So, even though the facts point conclusively to the validity of the “move it or lose it!” warning, they also confirm that it is never to late for you to “move it” and regain your health!

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Any movement is a step towards better health and physical fitness. Walk a lap (or two) around your house or apartment. Put that TV remote away and get up to change the channels. As your body becomes accustomed to moving again, you will probably discover that you actually want to move more. Then you can slowly add additional movement to your daily routine. Increase the walk around your house to a walk around the block, a walk in the park, or even a walk through the shopping mall. Walking with a friend can often help to keep you on track(especially on those days when you’d rather sit and veg, then get your body moving). If you are physically able, take the stairs instead of using the elevator as often as you can. Park farther away from the entrance to the supermarket and make it a goal to put more and more parking spots between you and the entrance.

After a few weeks of regular physical activity, you will begin to feel the healthful benefits of movement. Then you’ll be ready for new ways to build flexibility, fitness, and muscle strength. Your chiropractor can advise you on how to become more physically active and help you to development an individualized program.

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The findings were based on data from the National Health and nutrition Examination Survey, a regularly conducted government health survey. Researchers focused on surveys conducted between 1988 and 1994 and between 2001 and 2006, which together included more than 15,000 Americans between the ages of 40 and 74. They looked at rates of five lifestyle factors involved in preventing a range of health risks: maintaining a normal weight, getting regular exercise, eating enough fruits and vegetables, not smoking, and drinking moderate amounts of alcohol.

Though the study cannot tell us why healthy lifestyle habits are on the decline, lead researcher, Dr. Dana E. King, of the Medical University of South Carolina in Charleston, said that one reason may be that these changes are just difficult to make. “People’s increasingly hectic lives may be making it hard to fit in regular exercise, or to sit down to healthier, home-cooked meals rather than eating take-out.” He suggested some simple steps can make a difference. “It’s not hard, for example, to take some fruit to work with you, instead of going to the vending machine.” (Parking a little farther away from your destination and walking a bit can help, too.) Most importantly, Dr. King stressed that “it’s never too late” for middle-aged and older adults to make lifestyle changes for the better. In fact, in an earlier study, King and his colleagues found that when middle-aged adults newly adopted a healthier lifestyle — including regular exercise and eating more fruits and vegetables — their risk of developing cardiovascular disease or dying over the next several years fell by as much as 40 percent.

If you think about it, there aren’t many things in life that carry an “it’s never too late” guarantee. So, why not start today, no matter what your age may be? Your healthy future is depending on you!

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