Originally Posted by jkonecne
They aren't for his muscles necessarily. There mainly used for tendons and joints and things.(when not used for rehab) I bet Nadal was 100% healthy in the pic. You have to be very careful not to lift too much weight when doing those types of motions.
No worries. The amount of resistance of a single surgical tubing (especially for someone with Nadal's arms) is more than zero, but not much more...