Advices for Life


September 16, 2016 23:03

The Zone diet

Barry Sears, Ph.D., author of "Enter the Zone" and "Mastering the Zone", argues that the high-carbohydrate diet impairs athletic performance and helps entirety.The author believes carbohydrates and insulin are harmful substances, and recommends that a complex diet that restricts the intake of carbohydrates.Barry Sears advises consumed at each meal to 40% of calories as carbohydrate, 30% - in the form of proteins and 30% - in the form of fat.

assumed that in order to achieve maximum performance athletes must be guided by the Zone Diet, which may contribute to optimal sports performance due to changes in production of eicosanoids so that the body produces more "good" ekozanoidov than "bad".Barry Sears claims that eicosanoids are the most powerful hormones and control all physiological functions.

Supporters zonal border diet recommended intake of carbohydrates so that the body does not produce too much insulin, because high levels increase its production of "bad" eicosanoids."Bad" eicosanoids may wors

en athletic performance by reducing oxygen transmission cells, lowering blood glucose levels and body obstructing use hir.According to Barry Sears, insulin also: posobstvuet obesity because it causes the accumulation of carbohydrates in the form of fat.

contemplated that the protein in the diet increases the zonal glycogen levels and enhances production of "good" eicosanoids by counteracting the influence of insulin.These eicosanoids probably force-zayut stamina, increasing the transfer of oxygen to the cells, facilitating disposal of accumulated fat and maintaining blood glucose levels.

Such information contained in scientific language should intimidate athletes.However, the scientific basis for such a diet can be completely criticize.Eicosanoids not cause disease - are biologically active, hormone-like compounds from zestnye as prostaglandins, thromboxanes and -eykotrieny.Regulyatstt Eicosanoids are involved in inflammation, and coagulation reactions of the immune system.The claim that all-powerful eicosanoids, wrongly, the physiology of the body is not so simple.In addition, there is no evidence that insulin produces "bad" eicosanoids, and glucagon - "good".In the literature on nutrition and biochemistry have no information on metabolic pathways linking diet, insulin, glucagon, and eicosanoids.The idea that it is this diet (or any other) fully regulates insulin production and glucagon is not confirmed Endocrinology and "the assertion that insulin and glucagon control the eicosanoids production is not confirmed biochemically. Finally, the view that eicosanoids control every physiological function (including athletic performance), not only groundless, but also oversimplifies the complex physiological processes.

athletes need carbohydrates to maintain performance at a high level. In contrast to the assertions of the Zone books, consumption of high-carb meal 1-4 hours before exercise improves performance by increasing theblood glucose levels and replenish glycogen stores. The consumption of carbohydrates during a one-hour and longer load increases endurance, providing muscle glucose as muscle glycogen stores are depleted. carbohydrate consumption immediately after intensive training increases muscle glycogen stores.

body WeightIt depends on the number of calories absorbed, compared with the amount of "burned."There is also evidence that insulin causes people completeness.

Zone diet a low-energy.Zonal books try to disguise it, forcing people to consider the protein and carbohydrate components instead of calories.Although Sears does not focus attention on energy absorption, the Zone diet provides only about 1,200 kcal (120 g carbohydrate) for the average woman and 1,700 calories per day (170 carbohydrate) for the average man.Diet is also inadequate in respect of thiamine, pyridoxine, magnesium, copper and chromium.

Zone diet does not increase the ability to "burn" fat during exercise.The best way for athletes to improve their ability to "burn" fat - continue to train.With regard to the gradual loss of fat, it is a result of physical activity when kcal "burned" ahead comes from food, and no special dietary intake.

Hazard Zone diet:

  • inadequacy of calories (about 1,700 men and 1,200 women)
  • inadequate amount of dietary carbohydrates (about 170 g for men and 120 g for women)
  • Inadequate dietary elements (thiamine, pyridoxine, magnesium, copper and chromium)
  • misconception that the Zone diet will improve performance

finally, athletes can not train or compete for a long time at a low-energy, low-carbohydrate diet.Athletes require adequate calories and carbohydrates to maintain glycogen in muscle tissue.Those who adhere to the Zone diet, the result will be on the verge of starvation and poor performance.