If you look into it there is quite a lot of professional opinion that they do speed recovery.
In my case I did a weeks off-piste skiing last year and on Thursday night I was so knackered when I finished that I thought I would have real trouble the next day – even my knees ached walking up the stairs.
Wore my 2XU compression tights overnight (they are small and very tight – I look like Max Wall in them) and the next day felt like I had week-start legs, and no aching knees.
Two 50 min hikes up the mountain with skiis on my back and a long ‘skate’ along a valley path to end the day were no problem.