zaskar said:
Anyone here know how red meat or any meat affect cycling performance? i cut back on red meats and find my blood pressure is lower and im riding better. also seem to have more endurance on a 5 hour ride.if anyone has facts or experience with being a vegetarian please share.
This is a great question but a rather sticky topic. I find that people tend to be defensive of diet on about the same par as politics and religion. So whatever I offer you will probably be met with a head-on assault from someone. Such is the diet controversy.
I have read about a few studies in which those who ate meat, (all meats, not just red meat), were compared to those who abstained from meat. In each case, the findings of the study were that strength was increased in those who abstained from eating meat. Perhaps not unexpectedly, most of these studies utilized
endurance tests to determine the affect of the compared diets. Also note that the source for these condensed summaries was published in the late 1980s, so the tests aren't what would be considered contemporary or the final word by any stretch.
One study performed at Yale and reported in the
Yale Medical Journal in
1907, tested three groups; meat-eating athletes, vegetarian athletes and sedentary vegetarians. Though the information I have is only excerpted from the actual report, it does conclude that the vegetarians, even when sedentary, scored higher than the non-vegetarian group. The director of the study made specific mention of a non-meat diet being conducive to endurance.
[Fisher, I., "The Influence of Flesh Eating on Endurance," Yale Medical Journal, 13(5):205-221, 1907]
Another study, performed by Dr, J, Ioteyko of the
Academie de Medicine of Paris, compared the endurance of vegetarians and meat-eaters from all walks of life and across a variety of tests. The study concluded that vegetarians averaged two to three times the stamina shown by the meat-eaters and required only one-fifth as long to recover. Again, this is not a complete copy of the report but a very condensed summary so there isn't much to go on concerning how the study was performed, what kind of exercise the test subjects performed or any of the other necessary information to really understand the merits of the study.
[Ioteyko, J., "Enquete Scientifique sur les Vegetariens de Bruxelles," Henri Lamertin, Brussels, pg 50]
A team of Danish researchers completed a test in 1968, which tested a group of men on a variety of diets. Strength was measured on a stationary bicycle so perhaps this aligns more specifically with your concerns. The men were first fed a mixed diet of meat and vegetables, (period of time unknown), and instructed to pedal the bike to muscle failure. The average time recorded was 114 minutes. The men were then switched to a diet high in meat, milk and eggs, (for an unspecified period of time), and retested on the stationary bike. This resulted in an average of 57 minutes of pedalling before muscle failure. Lastly, the men were switched to a diet containing grains, vegetables and fruits, (again the duration of the diet is not recorded in the information I have), and turned in an average of 167 minutes of pedalling before muscle failure.
[Astrand, Per-Olaf, "Nutrition Today," no.2, 9-11, 1968]
Doctors in Belgium performed a study utilizing a grip meter to determine strength. They tested vegetarians against those eating standard diets containing meat and found that the meat-eaters could squeeze the grip meter an average of 38 times, while the vegetarians recorded an average of 69. It was again noted that the vegetarians also recovered faster.
[Schouteden, A., "Ann de Soc. Des Science Med. et Nat. de Bruxelles (Belgium) I]
I should stress that this information comes from a book which shows a decided bias toward diets devoid of animal products and certainly the studies chosen were those which fit the intent of the book. None the less, the information appears to have come from legitimate studies.
Perhaps it is notable that the results of these studies are in agreement with a number of points of human digestive physiology. More simply stated, if we can take a tip from animals, the traits and characteristics of the human digestive tract appear to place us more closely to herbivores than to carnivores or omnivores. It is also worth mentioning that based on other information, it is highly probable that for exercise involving explosive strength as opposed to endurance, the results of these studies might be expected to reverse.
For what it's worth.