Working
multiple muscle groups such as the posterior chain, (a huge group of muscles that supports the spine, back and hamstrings), it's used across a wide range of sports for conditioning and torching fat and calories.
The reviewers found few studies evaluating the effectiveness in the ACL rehabilitation process of so - called «open chain» exercises (those which tend to isolate a single
muscle group and a single joint,
such as leg curls and leg extensions, with or without added weight) versus «closed chain» exercises (those which work
multiple joints and
multiple muscle groups at once,
such as, for example, a squat involves the knee, hip and ankle joints, and
multiple muscles groups, e.g. quads, hamstrings, hip flexors, calves and glutes, with body weight alone or with added weight).
Multitask «Choose exercises that target
multiple muscle groups at once,
such as your upper and lower body, which tend to burn more calories,» says Brett Hoebel, a trainer on «The Biggest Loser: Season 11.»
This is a very important
muscle group for athletes though, because it performs
multiple functions crucial for explosive strength,
such as knee flexion and hip extension.