Hello, Muscle strengthening happens when you put load on the Muscle, which results in wear and tear of Muscles due to lactate accumulation. Basic principle for best strengthening is REST, DIET AND RECUPERATION. If you do and follow this steps the recovery is better amd chances of overuse injury can be prevented. Proper rest, enough protein intake will enhance muscle building and strength. For eg. If you do legs exercises on Monday based on recovery time it takes 48 to 72 hours for Complete recovery. Withing that time if you do same exercises again The muscles do not get enough time to recover hence overuse. So you will not get desired strengthening. On the other hand if exercises that you do, if you do not follow proper form and technique that may create injury. Yes it is possible, that injury can be prevented if you follow certain principles for proper exercises like periodization, your exercise trainer would know this. I hope you find this useful. Let me know if you need more clarification.

Joint and other musculoskeletal overuse injuries can happen at any age if you engage in regular exercise and physical activity. For example, you can overuse your muscles, bones, joints, ligaments, and tendons when you participate in athletics. Exercise and activity can strengthen muscles, tendons, bones, and ligaments through a process known as remodeling — the break down and growth of new tissue. But when tissue breaks down faster than it can rebuild, injuries occur,. ..