Keep loads as close to the body as possible and don't twist them when lifting, carrying or placing a load. The nose, shoulders, hips, and toes should all be facing up. There's no fixed answer to whether it's better to push or pull. There are times when pushing is better than pulling because we can protect our backs, visibility is usually better and the object cannot roll over us. Pulling an object can be easier because we can lift part of it off the ground and reduce the frictional force of the ground.
This means that you should never lean forward to lift a heavy object. Instead, you should squat, hold the load and stand up straightening your legs while keeping your back straight or slightly arched. In this context, this means that when you try to move an object, you will have to exert the same force whether you push or pull. Inadequate handles, such as boxes without handles or oddly shaped loads, make lifting difficult, moving the load away from the body, reducing the lifting height and increasing the risk of contact tension and of the load falling. Move objects close to your body and use your legs when lifting them from a low place to minimize flexion and stretching.
Walking up a slope or maneuvering an object in transit can also require excessive force and result in injuries to many different parts of the body. Moving an object that is on a roller coaster can allow a smaller person to move a very heavy object, as long as they can start it from the start. The amount of force required is determined by the weight of the object and where the object should be moved. Ultimately, you'll need to decide which option is best for you based on the object you're trying to move.
Try to use materials that are packaged with the appropriate grip points (your supplier may be able to provide you with different containers) or place the materials in containers with good grip.
