| Autor: |
Coon, Sarah, Bevilacqua, Zachary W., Ferris, McCarthy, Chen, Zhongxue, Kawata, Keisuke |
| Předmět: |
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| Zdroj: |
Athletic Training & Sports Health Care: The Journal for the Practicing Clinician; 2021, Vol. 13 Issue 1, p7-10, 4p |
| Abstrakt: |
Purpose: To test whether near point of convergence (NPC) is stable across morning to night. Methods: Thirty healthy adults with an average sleep duration of 7 hours or more at night were recruited. The study used time (7 AM and 7 PM) as the independent variable and NPC as the outcome variable. To objectively assess one's average sleep duration, participants wore an activity/sleep tracker (ActiGraph) for 7 days prior to the study. NPC was measured by using an accommodative ruler with a target approaching participants' eyes at a speed of 2 cm/sec. Measurements were recorded when the participant reported experiencing diplopia or malalignment of the eye was observed. The assessment was repeated twice. Mean NPC (cm) was used for analyses. Results: NPC at 7 PM (6.35 ± 2.37 cm) was significantly worse compared to 7 AM (5.27 ± 2.00 cm, NPC at 7 PM (6.35 ± 2.37 cm) was significantly worse compared to 7 AM (5.27 ± 2.00 cm, P <.001). After adjusting for a significant covariate (contact lens use), an estimated difference between 7 PM and 7 AM was 0.70 ± 0.98 cm, t(29) = 3.15, P =.0039. Conclusions: Results indicate that after a period of wakeful time, oculomotor function begins to decline. Although NPC emerges as a tool for concussion assessment, the time of day needs to be considered when interpreting the data. [[Athletic Training & Sports Health Care. 2021;13(1):7–10.] [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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