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The Effect of Target Speed and Verbal Instruction on NPC Measures in a Young, Healthy, and Active Population
Purpose: Evaluate the effect of target speed and verbal instruction on near point of convergence (NPC) measurements in a young, healthy, and active population. Methods: NPC was measured in 20 individuals with three target speeds and two sets of verbal instruction. The target speeds used were 1 cm/s,...
Autores principales: | , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Bern Open Publishing
2019
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7880140/ https://www.ncbi.nlm.nih.gov/pubmed/33828741 http://dx.doi.org/10.16910/jemr.12.4.5 |
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author | McGinnis, Ian Tierney, Ryan Mansell, Jamie Phillips, Jacqueline |
author_facet | McGinnis, Ian Tierney, Ryan Mansell, Jamie Phillips, Jacqueline |
author_sort | McGinnis, Ian |
collection | PubMed |
description | Purpose: Evaluate the effect of target speed and verbal instruction on near point of convergence (NPC) measurements in a young, healthy, and active population. Methods: NPC was measured in 20 individuals with three target speeds and two sets of verbal instruction. The target speeds used were 1 cm/s, 3 cm/s, 5 cm/s, and participant self-paced. The verbal instruction given was either to indicate when the target became “double” or “blurry”. Results: Paired-samples t-tests revealed significant differences between 5 cm/s (5.44 ± 2.01) and 1 cm/s (6.72 ± 2.39, p = .003), 3 cm/s (6.10 ± 2.36, p = .030) and self-paced (6.63 ± 2.26, p = .005). A significant difference (p < .001) was also found between the “double” (6.72 ± 2.39) and “blurry” (10.82 ± 3.08) conditions. Conclusion: For young, healthy and active individuals, target speed and verbal instruction matter when measuring NPC. |
format | Online Article Text |
id | pubmed-7880140 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2019 |
publisher | Bern Open Publishing |
record_format | MEDLINE/PubMed |
spelling | pubmed-78801402021-04-06 The Effect of Target Speed and Verbal Instruction on NPC Measures in a Young, Healthy, and Active Population McGinnis, Ian Tierney, Ryan Mansell, Jamie Phillips, Jacqueline J Eye Mov Res Research Article Purpose: Evaluate the effect of target speed and verbal instruction on near point of convergence (NPC) measurements in a young, healthy, and active population. Methods: NPC was measured in 20 individuals with three target speeds and two sets of verbal instruction. The target speeds used were 1 cm/s, 3 cm/s, 5 cm/s, and participant self-paced. The verbal instruction given was either to indicate when the target became “double” or “blurry”. Results: Paired-samples t-tests revealed significant differences between 5 cm/s (5.44 ± 2.01) and 1 cm/s (6.72 ± 2.39, p = .003), 3 cm/s (6.10 ± 2.36, p = .030) and self-paced (6.63 ± 2.26, p = .005). A significant difference (p < .001) was also found between the “double” (6.72 ± 2.39) and “blurry” (10.82 ± 3.08) conditions. Conclusion: For young, healthy and active individuals, target speed and verbal instruction matter when measuring NPC. Bern Open Publishing 2019-10-23 /pmc/articles/PMC7880140/ /pubmed/33828741 http://dx.doi.org/10.16910/jemr.12.4.5 Text en This work is licensed under a Creative Commons Attribution 4.0 International License, ( https://creativecommons.org/licenses/by/4.0/), which permits unrestricted use and redistribution provided that the original author and source are credited. |
spellingShingle | Research Article McGinnis, Ian Tierney, Ryan Mansell, Jamie Phillips, Jacqueline The Effect of Target Speed and Verbal Instruction on NPC Measures in a Young, Healthy, and Active Population |
title | The Effect of Target Speed and Verbal Instruction on NPC Measures in a Young, Healthy, and Active Population |
title_full | The Effect of Target Speed and Verbal Instruction on NPC Measures in a Young, Healthy, and Active Population |
title_fullStr | The Effect of Target Speed and Verbal Instruction on NPC Measures in a Young, Healthy, and Active Population |
title_full_unstemmed | The Effect of Target Speed and Verbal Instruction on NPC Measures in a Young, Healthy, and Active Population |
title_short | The Effect of Target Speed and Verbal Instruction on NPC Measures in a Young, Healthy, and Active Population |
title_sort | effect of target speed and verbal instruction on npc measures in a young, healthy, and active population |
topic | Research Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7880140/ https://www.ncbi.nlm.nih.gov/pubmed/33828741 http://dx.doi.org/10.16910/jemr.12.4.5 |
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