Tag Archive for: muscle

How Exercise Affects Menopause: Muscle and Bone

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In Tuesday’s post, we looked at how menopause affects exercise. Today and Saturday we’ll look at the reverse because exercise can have powerful effects on the changes we associate with menopause.

As a woman ages, she loses bone mineral content due to decreasing hormone levels. Her muscles change as well; fast-twitch muscle fibers become more like slow-twitch fibers. Women can’t run as fast . . .

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Gaining Muscle and Losing Fat with Protein

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Can you gain muscle while losing weight? Let’s take a look at the final study in this week’s Research Update on protein.

Researchers recruited 40 young overweight men to participate in a four-week diet and exercise weight loss program with an average age of 23 and average BMI of 29.7. The subjects were randomly divided into two groups. The control group had a diet that reduced calories by 40% and provided 1.2 grams of protein per kg of body weight per day. The protein group had their intake reduced by 40% but were given 2 . . .

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Dancing Your Way to Fitness

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Does the way dancers train make them some of the fittest and leanest athletes? On Tuesday, we looked at heavy weights and fewer repetitions. Let’s look at light weights and many repetitions.

In ballroom and other forms of dance, the resistance is almost always body weight. Yes, there are lifts and there are powerful turns and jumps, but the only resistance is often body weight. Think of repeatedly doing half-squats, push-ups, or abdominal curls for hours on end, plus the muscle needed to hold . . .

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Do Dancers Rule the Fitness World?

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Dancing with the Stars began a new season last night, and once again Paula asserted that dancers have the best bodies: great musculature and shape without being unnaturally bulky. She wondered if dancing was the equivalent of exercising at high reps with low weight as opposed to typical weightlifting that emphasizes systematically increasing weight when a specific number of repetitions are met. I do as my wife commands, so this week I'm looking into the difference in results between high reps at low weight and fewer reps at high weight.

Let’s look at fewer reps at . . .

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The Cause of Obesity: The Lack of Exercise

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After reading Thursday’s message, I’ll bet you all saw this one coming. Together with taking in too many calories, we just move way too little and it costs us. I specifically made the title of Thursday’s message “Muscle Aging” instead of “Aging Muscle.” The reason is that our sedentary lifestyle causes the muscle to age faster than it should. The solution is exercise. Here’s a partial list of what exercise does for skeletal muscle:


Better Blood Flow

Regular exercise increases blood flow to the exercising muscles. That allows nutrients in and more important, waste . . .

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The Cause of Obesity: Muscle Aging

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In the previous message, I said that there was one factor besides calorie intake that affected the rate of obesity in the United States. Because a picture is worth a thousand words, just take a look at the CT scans at right (1). These are scans of the thighs of a 25-year-old man and an 81-year-old man, matched for body weight and height. There are a couple of things that you can notice. The white area is the muscle and the dark area is mostly fat; the older man’s thigh has visibly less muscle mass . . .

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