by Britspin » 28 Mar 2014 13:31
I meant to post on this earlier..damn work keeps coming up, as per the strength training bit, establish what is tight or/and your limiter. Establish why it is tight/limiting. For example you may feel a tighness in the hamstring, a shortness that needs stretching, not necessarily. The muscle may be held in tension due to the position of the pelvis, maybe rolled back in the saddle, so stretching will not really help & potentially create stability problems as the new length (although stretching is rarely THAT good/effective) would destabilise the pelvis when it is in its normal 'neutral' position.
If it is neck & shoulders then it will mostly, as pointed out, be tension & isometric type contractions holding a set position for an extended time, flexibilty per se will assist a little, but riding in that position for progressively longer times would be best, with a break to loosen as needed, the aerodynamic cost would be likely outweighed by the potential issues of tightness later in the bike & on the run.