Originally Posted by DaveLeeNC

Yep - a tad under 15% in both cases. What is interesting is that despite them being driven by very different types of skills (albeit both are physical skills), the decline seems to be similar. It stands out a bunch more on the golf course because distance is what you experience. On a bike your direct experience is speed and a 15% decline in power is not a 15% decline in speed (other than up hills). But there is that damn power meter staring you in the face

dave

ps. FWIW, the important parameters for golf distance are fast twitch muscles, your technique is a HUGE factor (absolutely HUGE), and flexibility is important. ftp on bike - mostly different stuff.