Overall , peak relative oxygen uptake increased ( +11.3 % ) and reductions occurred in body weight ( -14.6 % ) , body fat percentage ( -6.9 % [ absolute ] ) , isometric knee extensor strength ( -12.4 % ) , handgrip strength ( -4.5 % ) , and absolute peak oxygen uptake ( -5.2 % ; p 0.02 time for all ) with no diet effect ( p 0.18 ) .