3. Leg Extension Machine
The problem with the seated leg machine is that the resistance point is at your ankles. When you perform the leg extension, a lot of stress goes to your knees and creates excess ACL tension. As you add weight, your risk of knee injury goes up exponentially. The seated leg extension is also not the most effective choice you can make when focusing on leg strength because it is an isolation exercise that targets just one muscle group.
To multi-task your workout in a safer way, try a compound exercise such as squats. Squats develop strength in the entire lower body, but they also help with balance, core strength, and even weight loss. Because it is an intense exercise, proper form is important to avoid injury – you can perform the move over a chair for some added support when you’re just getting started.