I hope someone out there can help.
I'm 54 but keep in good shape. I train 4 to 5 times per week and am careful with putting my training programme together to meet all of the demands of skiing whilst trying to look after problemtaical knees that are pretty worn out with wear and tear. I vary the programme and it keeps up well with all other demands. For example I've been doing some pretty demanding mountain biking recently and felt strong with really good endurance on long hard climbs.
The last couple of seasons, however, I've been finding that after feeling great on the first day or two, by the middle of the week my thighs burn more and more and I get to a point where I have to stop and recover after only a few hundred metres. I find it really frustrating as it never used to be a problem. At the end of the day my legs really sieze up and it's uncomfortable walking like I've done a really hard leg session after a break.
I realise I'm getting older but like I say I'm in good shape otherwise. Technically I think I'm skiing better than ever and will hopefully be doing my CSIA Level 3 training this season, so I don't think it's a technique thing as this would have shown itself before when the technique wasn't as strong.
If anyone has any suggestions I'd really appreciate it.