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Analysis of Delay Patterns in Hand Movements: IPJ and MCPJ Mechanics

This study delves into the delay patterns observed in hand movements, specifically focusing on the Interphalangeal Joint (IPJ) and the Metacarpophalangeal Joint (MCPJ). Detailed quantitative analyses reveal variations in delay durations across different types of movements, classified into Types I, II, and III. Significant statistical results are noted, with implications for understanding motor control and coordination in human hand use. Furthermore, the findings highlight potential areas for rehabilitation and ergonomic adjustments.

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Analysis of Delay Patterns in Hand Movements: IPJ and MCPJ Mechanics

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  1. HAND OPENING a) LF – Delay (IPJ-MCPJ) [% dur] b) TH – Delay (IPJ-MCPJ) [% dur] p <0.05 50 50 40 40 * * 30 30 20 20 10 10 CO SD ** *** 0 0 TYPE II-III TYPE 0, I, MIX -10 -10 TYPE 0 TYPE II -20 -20 TYPE III TYPE I -30 -30 80 70 HAND CLOSING 60 50 ** c) LF – Delay (IPJ-MCPJ) [% dur] d) TH – Delay (IPJ-MCPJ) [% dur] 40 30 * 0 20 TIPO III TYPE II TIPO I TIPO0 -2 10 -4 0 -10 -6 TYPE II-III TYPE 0, I, MIX -20 -8 -10 *** -12 -14 *** *** ** -16 -18

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