Ketogenic diet does not affect strength performance in elite artistic gymnasts
 

http://www.ncbi.nlm.nih.gov/pmc/arti...6/?tool=pubmed

Conclusion:

"Many coaches do not favorably accept the use of a ketogenic diet by
their athletes, both due to the absence of knowledge of the effects of
the LCKD and due to fear that the diet can rebound on the physical
performance of the athlete. Unfortunately there are very few studies
on the topic “ketogenic diet and exercise”, showing consistent methods
and results. Those that reported negative effects of VLCKD on
performance were only carried out for a time of up to 15 days [22];
but a longer period of time is necessary in order to induce the
keto-adaptation [66]. This process of keto-adaptation seems to require
a significant adherence to the dietary restriction of carbohydrate
that needs to last at least 10/14 days to produce the positive
reported effects. Individuals who intermittently consume carbohydrates
during a ketogenic diet reduce their tolerance to exercise
[18,19,22,58]. Our data suggest that athletes who underwent a VLCKD
with adequate protein intake lost weight and improved body composition
without any negative changes in strength and power performance. Taken
together these results suggest that a properly monitored and
programmed ketogenic diet could be a useful, and safe, method to allow
the athletes to reach their desired weight categories without the
unnecessary and harmful procedures currently in use. In conclusion,
this dietetic approach in the short term could be helpful in sports
that involve weight categories."

--
Dogman

"I have approximate answers and possible beliefs in different degrees of certainty
about different things, but I'm not absolutely sure of anything" - Richard Feynman