During the finish phase, the rider either actively brings the board back under the CM through leg guidance or moves the CM over the board from inside the turn. To maintain the flow of CM down the hill, it’s important that one of these two actions be performed. If the rider is unsuccessful, the finish phase becomes protracted, making it difficult to transition into the initiation phase of the new turn. Encourage students to experiment with the three phases of the turn. By isolating the elements that support initiation, control, and finishing aspects of a turn, you’ll be able to discuss movements and sensations relative to each part of the turn. Work on each phase individually, if necessary. Ten, as the rider’s skill level and proficiency increases, the blending of these phases will improve, making the transition from phase to phase look nearly seamless.
REFERENCE ALIGNMENTS Reference alignments provide instructors with reference points to compare varying positions and movements seen in snowboarding.
As a way to describe the many ways a rider can move in relation to the board and terrain, AASI has identified several reference alignments based on a neutral,
balanced stance: ■ Te shoulders and hips are parallel to the slope/terrain. ■ Te center of mass is over the working edge, and the rider’s weight is equally distributed between the feet.
■ Te shoulders and hips are perpendicular to the front foot. FIGURE 5.8: Reference Alignments
SHOULDERS AND HIPS PARALLEL TO THE SLOPE/TERRAIN
SHOULDERS AND PELVIS PERPENDICULAR TO THE FRONT FOOT
CENTER OF MASS OVER THE WORKING EDGE AND WEIGHT EQUALLY DISTRIBUTED BETWEEN THE FEET
Riders progress faster and can ride longer when they have a functional position or stance that is structurally and muscularly efficient. Tis position enables them to perform other movements quickly and easily. Due to differences with range of motion and stance angles, not all students will adopt an identical stance, but the common thread should be equal balance over both feet. Tis neutral stance promotes good alignment of the hips and upper body relative to the rider’s chosen binding angles and the board.
TheSnowPros.org CHAPTER 5: MOVEMENT ANALYSIS 81
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