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21 · KNOWLEDGE AREA

Movement Analysis & Troubleshooting

Observation, hypotheses, errors and reassessment.
Method

Before/after evaluation; reproducibility; limits of a single clip

This page applies the movement analysis framework to Before/after evaluation; reproducibility; limits of a single clip. Treat the listed dimensions separately rather than assigning one universal cue to the whole topic. Analysis separates observable board/rider action from an interpretation of causes. An error often appears after an earlier disturbance in approach or timing.

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Method

Equipment vs skill vs terrain vs fatigue; multiple possible causes

This page applies the movement analysis framework to Equipment vs skill vs terrain vs fatigue; multiple possible causes. Treat the listed dimensions separately rather than assigning one universal cue to the whole topic. Analysis separates observable board/rider action from an interpretation of causes. An error often appears after an earlier disturbance in approach or timing.

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Method

Flatground problems: failed press; weak pop; axis drift; broken combination

This page applies the movement analysis framework to Flatground problems: failed press; weak pop; axis drift; broken combination. Treat the listed dimensions separately rather than assigning one universal cue to the whole topic. Analysis separates observable board/rider action from an interpretation of causes. An error often appears after an earlier disturbance in approach or timing.

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Method

Jib/pipe problems: alignment; trajectory; re-entry; uncontrolled exit

This page applies the movement analysis framework to Jib/pipe problems: alignment; trajectory; re-entry; uncontrolled exit. Treat the listed dimensions separately rather than assigning one universal cue to the whole topic. Analysis separates observable board/rider action from an interpretation of causes. An error often appears after an earlier disturbance in approach or timing.

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Method

Jump problems: speed judgement; take-off; rotation; landing

Whole-body spin, counterrotation and board-relative change are different observations. Internal action alone cannot create net whole-body angular momentum in free flight. Take-off and landing geometry determine trajectory demands. Pop timing and approach speed cannot be prescribed from a feature label alone. Analysis separates observable board/rider action from an interpretation of causes. An error often appears after an earlier disturbance in approach or timing.

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Method

Observation: task; conditions; camera; whole run; phase; board outcome

This page applies the movement analysis framework to Observation: task; conditions; camera; whole run; phase; board outcome. Treat the listed dimensions separately rather than assigning one universal cue to the whole topic. Analysis separates observable board/rider action from an interpretation of causes. An error often appears after an earlier disturbance in approach or timing.

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Method

Remote analysis: required views; scope; confidence; follow-up task

This page applies the movement analysis framework to Remote analysis: required views; scope; confidence; follow-up task. Treat the listed dimensions separately rather than assigning one universal cue to the whole topic. Analysis separates observable board/rider action from an interpretation of causes. An error often appears after an earlier disturbance in approach or timing.

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Method

Video literacy: perspective distortion; frame rate; hidden edge/contact; uncertainty

An edge supports direction through its relation to snow and travel. Edge angle is distinct from board heading and skid angle. An observation requires enough view of approach, support, flight and finish. Missing information remains unknown. Analysis separates observable board/rider action from an interpretation of causes. An error often appears after an earlier disturbance in approach or timing.

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