Standards for Bodyweight Movements
When we train by manipulating objects like a barbell for weightlifting, it's much easier to set movement standards around the object. For example, the barbell must be move from platform to locked-out arms overhead in one continuous for the snatch lift; the weights on the bar determine the difficulty of the snatch weightlifting movement. Same goes for sports, where the ball or apparatus typically sets the standards of movement. For example, the ball may be touched and moved along the field by any body part other than the arms until it passes the goal line in soccer/football.
With bodyweight and gymnastics training, sometimes it's not that easy to determine the movement standard since the athlete is manipulating their own body instead of an object. In this case, there are three main perspectives from which to set and evaluate movement standards for bodyweight skills: the biomechanic for the movement, the sport or purpose for which the movement is performed for, and the artistic expression or aesthetics appeal for the movement itself.