The use of weighted sleds as part of a workout has increased in popularity as they are one of the most effective ways to add another dimension to your resistance training.
When you work with a weighted sled you are performing what is known as a concentric movement — a type of muscle activation that increases tension on a muscle as it shortens, such as when you perform a curl or a bench press. But those exercises also have an eccentric, or negative, movement, such as when you lower the bar back to your chest during a bench press.
Since sled training — whether you are pulling or pushing — only has concentric movements, you can give your muscles a great workout without overtaxing them too much.
According to Box Life magazine, here are five benefits to working with a sled:
Improves acceleration
When the body routinely has to work against resistance, it has to fire harder with each repetition: in this case, with each step as you push or pull the sled. With repeated use of the sled, your nervous system (which controls muscle function) may learn to fire harder all the time.
Develops functional strength
Sled work involves numerous muscles and joints performing functional movements. The arms and legs work together to coordinate movement, and keeping a strong core is crucial to keeping the body stable as the limbs exert force on the sled and training surface.
Variety
If you want to stay engaged in your workouts, you need to change things up. What could be a better way to mix up your workout and have a little fun than pulling and pushing a sled around?
Active recovery and injury prevention
When you lower yourself during a squat, you’re performing an eccentric action. The concentric portion occurs when you drive upward with the weight. You can lower far more weight than you can lift, so this is where most of the muscle damage occurs, which is how muscles become stronger. However, if you want to train frequently or speed up recovery, it isn’t ideal. Since sled training only has a concentric movement, it’s a great way to work your muscles without beating them up too much.
Great for conditioning
The practice of pulling and pushing something for time, distance or reps is as true to the core principles of fitness as it gets. If the sled is light, you can try and sprint as hard as you can and it will burn. If it’s heavy, there’s no question that your muscular endurance is going to go through the roof after a few sessions of pushing the sled 50 yards.
Sleds offer the opportunity to perform just about any exercise, from chest presses and rows, to wood chops, bear crawls and lunges, while providing a full-body workout. So next time you are in the gym, why not give one a try?
(Photo courtesy of muscleandfitness.com)









