Effect of ciliary-muscle contraction force on trapezius muscle activity during computer mouse work.

The relationship was valid also for nearly every minute of the tracking task for the right side at “near” screen distance: for minutes 1–4 it reached statistical significance (all r ’s ≥ 0.62, all p ’s < 0.05) and for minutes 5–8 and minute 10, the relationships bordered on significance (all r ’s ≥ 0.59, all p ’s < 0.07).

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