RESULTS	At follow up , a significant difference between those starting cycling and those who did not starting cycling was observed in VO ( 2peak ) ( 51.7 ml O ( 2 ) / min/kg vs. 47.9 ml O ( 2 ) / min/kg ; effect size = 0.49 , F = 8.145 , p = 0.007 ) , after adjustment for baseline scores , gender and age .\