Abstract: A belt which mounts to the hips and thighs and includes a number of fasteners for selectively attaching one or more training bands. The fasteners are arrayed about the circumference of hip and thigh straps. Varying degrees of resistance to hip rotation are obtained upon selectively positioning appropriate elastic and/or static training bands to the fasteners at the front, sides and rear of the hip strap. The training bands may be supported to stationary objects or handles can be gripped by a training assistant. The assembly finds particular advantage for training softball pitchers and batters, although can be used to condition other dynamic training or therapeutic movements.