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Jump!
With ageing, skeletal muscle atrophy in humans appears to be inevitable. A gradual loss of muscle fibres begins at approximately 50 years of age and continues such that by 80 years of age, approximately 50% of the fibres are lost from the limb muscles that have been studied. [1] The loss of muscle mass with…
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How competitive sports might take the fun out of exercising
Exercise is done against one’s wishes and maintained only because the alternative is worse. George A. Sheehan AP Photo/Anja Niedringhaus The Olympics is over (Paralympics has yet to start) and the super humans has left the TV screen. It was all great fun (except of course for the things that weren’t fun, such as doping,…
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The folly of the mean – Why do they differ so?
A few years ago I did a small study where we combined a ketogenic diet with resistance exercise [1]. After 10 weeks the 8 women in the diet group experienced a mean weight loss of 5,6kg. DEXA-scanning (Dual Energy X-ray Absorptiometry) showed that the mean fat mass loss was 5,6kg and that the fat free…
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A little something to learn from McArdle’s disease
“Muscle glycogen phosphorylase deficiency (glycogenosis type V or McArdle’s disease) is a disorder characterized by marked exercise intolerance—that is, premature fatigue and cramps during exertion, with frequent episodes of rhabdomyolysis.” “Unfortunately, sedentary behavior may worsen exercise intolerance by further reducing the limited oxidative capacity caused by blocked glycogenolysis.” [7] Glycogen matters. Having chronic full glycogen…
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Do you exercise like a predator or prey?
I have little time for writing these days. I mostly hover quietly in the background of the blogosphere and the twittering realm, plotting for the lifestyle revolution to come. But a thought hit me in the shower one day. Exercise is stress. It is a voluntarily induced stressing of our physiology which triggers certain responses.…
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The fittest person in the morgue
I have to admit that the title is stolen from an article by Mary Sheppard. The article is about the strange phenomenon of athletes keeling over and dying during strenuous exercise. The irony is that a marathoner will probably be the most worn out specimen at the morgue despite having a high VO2max before death.…
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Exercise zen – this is my habitat
«Because it’s there» George Mallory, when asked why he wanted to climb Mount Everest. Between the productive factory and the setting sun the rusty old metal offered me exercise. I accepted, but not for the exercise.
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What drives me to move
’I can’t tell you how wonderful it was’, she told me. ‘I walked into this room, and it was full of people like me. People who couldn’t sit still. People who had to move to think.’ Ken Robinson, The Element I do some temp work at a local school. Noticed a boy in the top…
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Physical activity and weight loss
Physical activity is a poor strategy for weight loss. Still, all around the world, clinicians and health personnel are chasing fat people around, getting them to move, move and move even more. When, in the end it becomes clear that moving more doesn’t affect weight, the blame is often put on the overweight. They must…
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What is the best exercise for fat loss? Part V – the conclusion
I wondered what the best exercise for fat loss was. I honestly didn’t know the answer, but now feel I have acquired a more thorough understanding. As a scientist I ask questions I want answered and work to find the answers. However, all this digging in the details and nerding about does not mean fat…
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What is the best exercise for fat loss? Part IV
The biasI have this theory. In the last post I concluded that there is sufficient data for recommending high intensity exercise in favor of low intensity for fat loss. Admittedly, the data in support of this is not strong. It is there, but I would not bet my life on it yet. I might be…
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What is the best exercise for fat loss? Part III
For some reason it makes intuitive sense to me that high intensity exercise is better for fat loss than low intensity, but I do not quite know how this came to make sense. High intensity exercise will cause a primary burning of glucose and so high intensity exercise will make our muscles better at taking…
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What is the best exercise for fat loss? Part II
Energy expenditure – does it count? No current treatment for obesity reliably sustains weight loss, perhaps because compensatory metabolic processes resist the maintenance of the altered body weight. Leibel, Rosenbaum and Hirsch 1995 [1] The energy For some background reading on energy, this might be of interest. Most endurance exercise apparatus found in a gym…
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What is the best exercise for fat loss?
You’d think this question was easy to answer after studying exercise and health for many years. You’d think I would know. I would think I would know, but when asking myself the question recently, it struck me that I didn’t. I can make a calculated guess, but I should know. What sort of exercise would…
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Play
Let’s face it, we are social animals. Being forced to solitary living is considered a punishment and rightly so. As social animals we play, both as young and as adults. Play builds social skills, it makes sure our neurons are properly connected and it builds and protects our body. With ever growing focus on lifestyle…
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Exercise Zen
“When I’m in this state everything is pure, vividly clear. I’m in a cocoon of concentration. And if I can put myself into that cocoon, I’m invincible. . . . I’m living fully in the present. I’m absolutely engaged, involved in what I’m doing. . . . It comes and it goes, and the pure…
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Energy in, energy out and the fairies in the back of my garden
Science philosopher Karl Popper proposed that science is easily performed. A theory must be falsifiable and the role of science is to prove a theory wrong. On the other hand if a theory resists constant attempts of falsification the probability of it being true increases. This is a very satisfying, concrete and mechanistic view of…
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Meanwhile, in Japan
Felt like writing something about exercise. After all, my education is in exercise science and not nutrition. This is about an exercise trend from Japan. It might be the next big thing in both muscle building and physical therapy and it may hurt like hell. This is Kaatsu training! Simply speaking Kaatsu training is occlusion…
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The second question provides the answer
On our way to understand overweight we have (that is I have, but I thought you should be included) defined overweight as excess storage of energy in fat tissue and we asked the obvious; what factors control the storage of energy in fat tissue? The answer is glucose (a simple sugar that when it’s in…
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