Principle of Reversibility: a
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Improvement is based on maturation,
Maturity, nutrition, motivation, environment, and heredity are factors influencing this principle.
The training program must place a demand on the body's systems in order for improvement to take place.
With complete bed rest, fitness declines at a rate of nearly 10% per week.
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Mrs. kirby, 58, is a moderately active woman. she works in the garden almost daily, occasionally walks with her friends, and babysits her three very active young grandchildren every weekend. she eats a fairly standard diet every day: she has cereal with milk and coffee for breakfast, some kind of salad for lunch, and a piece of meat or fish with a healthy of veggies for dinner. she usually skips desserts or has just a couple of strawberries. when asked to look at the food labels and calculate her intake of carbohydrates, fats, and proteins in grams over the entire day, on an average day, she came up with the following numbers: carbohydrates: 243 g fats: 41 g proteins: 63 g calculate what percentage of mrs. kirby's total energy intake came from carbohydrates.