Feb 15, 2013 / 8:00 am
As I was enjoying my morning breakfast with Global TV, Dr. Art Hister came on with his weekly health spiel. Oddly, it was exactly what I was writing about this week, health and exercise versus age.
As we get older we move slower and our metabolism slows. That doesn’t mean that we should slow down ourselves. It means we should try harder. A lot of things that we thought were just inherent to the aging process and were going to happen no matter what, don't really have to happen if you maintain an appropriate lifestyle.
Beginning when you are in your late 30s, maximal oxygen consumption decreases at a rate of at least 10% per decade (about 1% per year) in most people. This changes the heart rate, which decreases by about 5 to 10 beats per minute per decade. This reduction in aerobic capacity is one of the reasons to exercise when you are older.
Some types of muscle are lost more quickly than others. You'll lose more fast-twitch muscle which are muscles that you use less often. Slow twitch muscles are the ones that you use to do your daily life like walking. The plus side of this - even though aging adults have less muscle mass, their higher proportion of slow-twitch, fatigue-resistant muscle fibers can give them a leg up in endurance activities such as running or cycling.
With age, large, elastic arteries including the aorta (which shuttles blood from the heart) and the carotid artery (which feeds blood to the brain) get stiffer. As a result, blood pressure rises and the heart has to work that much harder. Exercising daily helps slow down the process.
Wear and tear builds up on the joints. Connective tissue becomes less elastic and lubricating fluids decline, making aging adults more injury-prone. Cross-training — doing a mix of high- and low-impact exercises such as weight training, yoga and cycling — works different muscle groups and can reduce the risk of orthopedic injuries from overuse. It is suggested that a lifelong exercise habit helps keep joints intact. In part, this could be because activity improves blood flow and other regenerative pathways and may activate stem cells that help the body repair itself.
Here is another one of the most important reasons that I exercise. Endorphins! Endorphins are among the brain chemicals known as neurotransmitters, which function to transmit electrical signals within the nervous system. These endorphins interact with the receptors in your brain that reduce your perception of pain. Endorphins also trigger a positive feeling in the body, similar to that of morphine. Exercise creates endorphins which help in decreasing depression and pain. Endorphins make you happy!
As for myself, I am starting to feel all these health issues less and less as I keep eating healthily and exercising with the greatest team out there……Team Castanet!!
So to all the "Zoomers" out there...the longer you want to live, the more you will exercise.
Have a great week and remember - eat well, sleep well, exercise and...be good to YOU!
Read more A New Beginning articles
- Health & exercise versus age Feb 15
- Eat vegetables! Do I look like a rabbit? Feb 8
- Fat people and how they get that way Feb 1
- A new beginning: Week 1 Jan 25
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