My attempt to understand the article: The body stores energy in fat tissue, intramuscular fat, and glycogen reserves. Low to moderate exercise (25-65% VO2 max) sees a decrease in using energy from fat tissue, but an overall increase in total fat burning (more intramuscular fat is burned at higher intensities). The more fit you are from endurance training, the better your body is at using energy from fat (improves your pipeline). Fat is very energy-dense, but hard to unlock, so higher intensity exercise will not directly burn more fat b/c the body simply cant access it fast enough (and must increasingly rely on glycogen reserves, the harder and faster you exercise). However, most of your bodys conversion of fat to energy happens in normal metabolic activity, so any increase in fitness will mean you burn more fat outside of your exercise intervals. If you eat a meal with carbs within 4 hrs before exercise, the insulin action means your body will prefer to use the energy from those carbs to fuel your body, decreasing its use of fat for energy. So get fit, train for endurance, dont eat carbs before exercise (for fat loss purposes) and train longer periods at a sustained moderate pace, and you will burn more fat both during exercise (due to more time spent exercising) and after. HIIT style exercise will technically burn far less fat during exercise b/c you spend considerably less time exercising, but this is conditionally offset by the increased BMR (basal metabolic rate) that burns fat while your body is at rest. I already had the gist of this from laymans fitness and exercise articles, but it was nice to read a more formal explanation of the fat metabolization process. gssiweb.org/Article/sse-59-fat-metabolism-during-exercise-new-concepts
Posted on: Sun, 08 Jun 2014 08:02:56 +0000
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