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Plots of the estimated marginal means over time between the arm pain classes for the mixed effects model for grip strength (A), flexion (B), abduction (C), internal rotation (D), and external rotation (E). Statistically significant findings: Grip strength - time effect: P < .001; Flexion - group effect: P < .001 and time effect: P < .001; Abduction - group effect: P < .001 and time effect: P < .001; External rotation - group effect: P < .001 and time effect: P < .001.
