Immediate and cumulative effects of upper-body isometric exercise on the cornea and anterior segment of the human eye
Objectives The execution of isometric resistance training has demonstrated to cause changes in the ocular physiology. The morphology of the cornea and anterior chamber is of paramount importance in the prevention and management of several ocular diseases, and thus, understating the impact of perform...
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PeerJ Inc.
2022-03-01
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| Online Access: | https://peerj.com/articles/13160.pdf |
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| author | Jesus Vera Beatriz Redondo Rubén Molina Amador García-Ramos Raimundo Jiménez |
| author_facet | Jesus Vera Beatriz Redondo Rubén Molina Amador García-Ramos Raimundo Jiménez |
| author_sort | Jesus Vera |
| collection | DOAJ |
| description | Objectives The execution of isometric resistance training has demonstrated to cause changes in the ocular physiology. The morphology of the cornea and anterior chamber is of paramount importance in the prevention and management of several ocular diseases, and thus, understating the impact of performing isometric exercise on the eye physiology may allow a better management of these ocular conditions. We aimed to determine the short-term effects of 2-minutes upper-body isometric effort at two different intensities on corneal and anterior eye morphology. Methods Eighteen healthy young adults performed a 2-minutes isometric biceps-curl exercise against two loads relative to their maximum strength capacity (high-intensity and low-intensity) in a randomized manner. An Oculus Pentacam was used to measure the corneal morphology and anterior chamber parameters in both experimental conditions at baseline, during the isometric effort (after 30, 60, 90 and 120 seconds), and after 30 and 120 seconds of passive recovery. Results We found that isometric effort causes an increase in pupil size (P < 0.001), and a decrease in the iridocorneal angle (P = 0.005), anterior chamber volume (P < 0.001) and K-flat (P < 0.001) during isometric effort, with these effects being more accentuated in high-intensity condition (P < 0.005 in all cases).Performing 2-minutes upper-body isometric effort did not alter anterior chamber depth, central corneal thickness, corneal volume, and K-steep (P > 0.05 in all cases). Conclusions Our data exhibit that performing 2-minutes of upper-body isometric exercise modifies several parameters of the corneal morphology and anterior eye biometrics, with these changes being greater for the high-intensity exercise condition. The findings of this study may be of relevance for the prevention and management of corneal ectasias and glaucoma. |
| first_indexed | 2024-03-09T07:00:02Z |
| format | Article |
| id | doaj.art-5e952a5ca44448d497dfb6687353134e |
| institution | Directory Open Access Journal |
| issn | 2167-8359 |
| language | English |
| last_indexed | 2024-03-09T07:00:02Z |
| publishDate | 2022-03-01 |
| publisher | PeerJ Inc. |
| record_format | Article |
| series | PeerJ |
| spelling | doaj.art-5e952a5ca44448d497dfb6687353134e2023-12-03T09:54:59ZengPeerJ Inc.PeerJ2167-83592022-03-0110e1316010.7717/peerj.13160Immediate and cumulative effects of upper-body isometric exercise on the cornea and anterior segment of the human eyeJesus Vera0Beatriz Redondo1Rubén Molina2Amador García-Ramos3Raimundo Jiménez4Department of Optics, Universidad de Granada, Granada, Spain, SpainDepartment of Optics, Universidad de Granada, Granada, Spain, SpainDepartment of Optics, Universidad de Granada, Granada, Spain, SpainDepartment of Physical Education and Sport, Universidad de Granada, Granada, Granada, SpainDepartment of Optics, Universidad de Granada, Granada, Spain, SpainObjectives The execution of isometric resistance training has demonstrated to cause changes in the ocular physiology. The morphology of the cornea and anterior chamber is of paramount importance in the prevention and management of several ocular diseases, and thus, understating the impact of performing isometric exercise on the eye physiology may allow a better management of these ocular conditions. We aimed to determine the short-term effects of 2-minutes upper-body isometric effort at two different intensities on corneal and anterior eye morphology. Methods Eighteen healthy young adults performed a 2-minutes isometric biceps-curl exercise against two loads relative to their maximum strength capacity (high-intensity and low-intensity) in a randomized manner. An Oculus Pentacam was used to measure the corneal morphology and anterior chamber parameters in both experimental conditions at baseline, during the isometric effort (after 30, 60, 90 and 120 seconds), and after 30 and 120 seconds of passive recovery. Results We found that isometric effort causes an increase in pupil size (P < 0.001), and a decrease in the iridocorneal angle (P = 0.005), anterior chamber volume (P < 0.001) and K-flat (P < 0.001) during isometric effort, with these effects being more accentuated in high-intensity condition (P < 0.005 in all cases).Performing 2-minutes upper-body isometric effort did not alter anterior chamber depth, central corneal thickness, corneal volume, and K-steep (P > 0.05 in all cases). Conclusions Our data exhibit that performing 2-minutes of upper-body isometric exercise modifies several parameters of the corneal morphology and anterior eye biometrics, with these changes being greater for the high-intensity exercise condition. The findings of this study may be of relevance for the prevention and management of corneal ectasias and glaucoma.https://peerj.com/articles/13160.pdfPhysical exercisePentacamCorneal ectasiaPupil size |
| spellingShingle | Jesus Vera Beatriz Redondo Rubén Molina Amador García-Ramos Raimundo Jiménez Immediate and cumulative effects of upper-body isometric exercise on the cornea and anterior segment of the human eye PeerJ Physical exercise Pentacam Corneal ectasia Pupil size |
| title | Immediate and cumulative effects of upper-body isometric exercise on the cornea and anterior segment of the human eye |
| title_full | Immediate and cumulative effects of upper-body isometric exercise on the cornea and anterior segment of the human eye |
| title_fullStr | Immediate and cumulative effects of upper-body isometric exercise on the cornea and anterior segment of the human eye |
| title_full_unstemmed | Immediate and cumulative effects of upper-body isometric exercise on the cornea and anterior segment of the human eye |
| title_short | Immediate and cumulative effects of upper-body isometric exercise on the cornea and anterior segment of the human eye |
| title_sort | immediate and cumulative effects of upper body isometric exercise on the cornea and anterior segment of the human eye |
| topic | Physical exercise Pentacam Corneal ectasia Pupil size |
| url | https://peerj.com/articles/13160.pdf |
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