Final answer:
Mid-stance in the gait cycle occurs at about 30% to 40% of the gait cycle, representing the moment when the body weight is directly over the stance limb.
Step-by-step explanation:
Mid-stance in the gait cycle occurs approximately at 30% to 40% of the gait cycle. The gait cycle is broadly divided into two main phases: the stance phase and the swing phase. The stance phase starts when the foot makes contact with the ground and ends when that same foot leaves the ground. The mid-stance specifically is the point where the body weight is directly over the stance limb and this typically happens around the mentioned percentage of the gait cycle, acting as a transitional phase between initial contact and terminal stance.