Muscle, bone and exercise
How muscle protects the joints, why strength training builds bone, and when effort becomes dangerous.
No es una condena al reposo: el movimiento guiado y fortalecer el cuádriceps son el mejor rescate articular.
Muscles, bones and joints work as a single system. The muscle around a joint acts as a shock absorber: when it weakens, every step sends the force straight into cartilage and bone, and wear and tear —osteoarthritis— progresses faster. Strengthening the quadriceps is one of the best-supported measures for knee osteoarthritis.
Bone is living tissue that also responds to load: lifting weights and impact exercise stimulate the cells that build new bone, while a lack of stimulus lets density drain away painlessly until the first fracture. At the other extreme, pushing a muscle far beyond what it is trained for can break its cells open and release myoglobin into the blood, a substance that damages the kidneys: exertional rhabdomyolysis. The key is progression.
