Back pain can include:
Postural back pain
Disc-related back pain
Arthritis pain
Stress fracture
Symptoms:
Pain in back, stiffness, muscle spasms, leg symptoms if nerve irritation is present (numbness, pain, and/or weakness in the legs)
Do:
Use proper back mechanics when lifting your bag.
Bend through the knees (squat) when retrieving the ball.
Slow down the backswing to minimize rotational stress on the lower back at the top of the backswing.
Adopt a big shoulder and hip turn on the backswing (classic swing technique).
Make sure body weight is properly shifted to the right foot during the backswing, and that the arms and shoulders are kept within the plane of the swing at the top of the backswing.