The effect of moderate treadmill exercise on the resistive index of the medial long posterior ciliary artery in dogs
The resistive index (RI) is an indirect measurement of arterial resistance by means of a ratio between the peak systolic and end diastolic velocities recorded with a spectral Doppler device, especially used to evaluate the vascular damage in ocular diseases such as glaucoma. Some ocular variables su...
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| Format: | Article |
| Language: | English |
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Czech Academy of Agricultural Sciences
2019-09-01
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| Series: | Veterinární Medicína |
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| Online Access: | https://vetmed.agriculturejournals.cz/artkey/vet-201909-0004_the-effect-of-moderate-treadmill-exercise-on-the-resistive-index-of-the-medial-long-posterior-ciliary-artery-in.php |
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| author | Michela Pugliese Monica Ragusa Vito Biondi Annamaria Passantino Kai Zhang Francesco Macri |
| author_facet | Michela Pugliese Monica Ragusa Vito Biondi Annamaria Passantino Kai Zhang Francesco Macri |
| author_sort | Michela Pugliese |
| collection | DOAJ |
| description | The resistive index (RI) is an indirect measurement of arterial resistance by means of a ratio between the peak systolic and end diastolic velocities recorded with a spectral Doppler device, especially used to evaluate the vascular damage in ocular diseases such as glaucoma. Some ocular variables such as the intraocular pressure (IOP), the choroidal thickness, the axial length and the ocular blood flow may be influenced by physical exercise. The purpose of this study was to evaluate the influence of the exercise on the RI of the medial long posterior ciliary artery in dogs, and correlate the data obtained with the IOP values. Ten clinically healthy dogs were subjected to moderate physical exercise on a canine motorised treadmill at different speeds for 45 minutes. A colour Doppler examination was performed and the RI values were calculated for the medial long posterior ciliary artery at rest, immediately after the exercise, and after 60 minutes at the end of the exercise. At the same times, the IOP was recorded by applanation tonometry. The data were analysed by a two-way repeated ANOVA measurement in order to compare the RI and the IOP. Wilcoxon's test was applied for the post hoc comparison. Spearman's rank correlation for non-normal distribution was used to determine a relationship between the RI and the IOP. The at rest RI was 0.722 +/-0.022, IOP 12.38 +/3.21 mm Hg. A significant decrease in the RI was observed immediately after the exercise (0.697 +/-0.035) and during the passive recovery phase (0.682 +/-0.042). A significant decrease in the IOP (11+/3.39 mmHg) was recorded after 60 min of the passive recovery phase; at the end of the exercise, a slight decrease (12.29+/4.26 mm Hg) mm Hg was detected. During the test, a linear correlation between the RI and the IOP was observed. Our results suggest that exercise induces the modification of the ophthalmic blood flow in dogs, presumably related to the compensatory neuro-hormonal mechanisms. |
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| format | Article |
| id | doaj.art-e46743ae5a4c46ec95297f7c6e450619 |
| institution | Directory Open Access Journal |
| issn | 0375-8427 1805-9392 |
| language | English |
| last_indexed | 2024-04-10T07:59:06Z |
| publishDate | 2019-09-01 |
| publisher | Czech Academy of Agricultural Sciences |
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| series | Veterinární Medicína |
| spelling | doaj.art-e46743ae5a4c46ec95297f7c6e4506192023-02-23T03:50:53ZengCzech Academy of Agricultural SciencesVeterinární Medicína0375-84271805-93922019-09-0164940040610.17221/162/2018-VETMEDvet-201909-0004The effect of moderate treadmill exercise on the resistive index of the medial long posterior ciliary artery in dogsMichela Pugliese0Monica Ragusa1Vito Biondi2Annamaria Passantino3Kai Zhang4Francesco Macri5Department of Veterinary Science, University of Messina, Polo Universitario Annunziata, Messina, ItalyDepartment of Experimental and Clinical Medicine, University of Catanzaro, Viale Europa, Catanzaro, ItalyDepartment of Veterinary Science, University of Messina, Polo Universitario Annunziata, Messina, ItalyDepartment of Veterinary Science, University of Messina, Polo Universitario Annunziata, Messina, ItalyDepartment of Traditional Chinese Veterinary Medicine. Lanzhou Institute of Husbandry and Pharmaceutical Sciences of CAAS, Xiaoxihu, Qilihe District, Lanzhou city, Gansu province, People's Republic of ChinaDepartment of Veterinary Science, University of Messina, Polo Universitario Annunziata, Messina, ItalyThe resistive index (RI) is an indirect measurement of arterial resistance by means of a ratio between the peak systolic and end diastolic velocities recorded with a spectral Doppler device, especially used to evaluate the vascular damage in ocular diseases such as glaucoma. Some ocular variables such as the intraocular pressure (IOP), the choroidal thickness, the axial length and the ocular blood flow may be influenced by physical exercise. The purpose of this study was to evaluate the influence of the exercise on the RI of the medial long posterior ciliary artery in dogs, and correlate the data obtained with the IOP values. Ten clinically healthy dogs were subjected to moderate physical exercise on a canine motorised treadmill at different speeds for 45 minutes. A colour Doppler examination was performed and the RI values were calculated for the medial long posterior ciliary artery at rest, immediately after the exercise, and after 60 minutes at the end of the exercise. At the same times, the IOP was recorded by applanation tonometry. The data were analysed by a two-way repeated ANOVA measurement in order to compare the RI and the IOP. Wilcoxon's test was applied for the post hoc comparison. Spearman's rank correlation for non-normal distribution was used to determine a relationship between the RI and the IOP. The at rest RI was 0.722 +/-0.022, IOP 12.38 +/3.21 mm Hg. A significant decrease in the RI was observed immediately after the exercise (0.697 +/-0.035) and during the passive recovery phase (0.682 +/-0.042). A significant decrease in the IOP (11+/3.39 mmHg) was recorded after 60 min of the passive recovery phase; at the end of the exercise, a slight decrease (12.29+/4.26 mm Hg) mm Hg was detected. During the test, a linear correlation between the RI and the IOP was observed. Our results suggest that exercise induces the modification of the ophthalmic blood flow in dogs, presumably related to the compensatory neuro-hormonal mechanisms.https://vetmed.agriculturejournals.cz/artkey/vet-201909-0004_the-effect-of-moderate-treadmill-exercise-on-the-resistive-index-of-the-medial-long-posterior-ciliary-artery-in.phpphysical exerciseocular variablesocular blood flow |
| spellingShingle | Michela Pugliese Monica Ragusa Vito Biondi Annamaria Passantino Kai Zhang Francesco Macri The effect of moderate treadmill exercise on the resistive index of the medial long posterior ciliary artery in dogs Veterinární Medicína physical exercise ocular variables ocular blood flow |
| title | The effect of moderate treadmill exercise on the resistive index of the medial long posterior ciliary artery in dogs |
| title_full | The effect of moderate treadmill exercise on the resistive index of the medial long posterior ciliary artery in dogs |
| title_fullStr | The effect of moderate treadmill exercise on the resistive index of the medial long posterior ciliary artery in dogs |
| title_full_unstemmed | The effect of moderate treadmill exercise on the resistive index of the medial long posterior ciliary artery in dogs |
| title_short | The effect of moderate treadmill exercise on the resistive index of the medial long posterior ciliary artery in dogs |
| title_sort | effect of moderate treadmill exercise on the resistive index of the medial long posterior ciliary artery in dogs |
| topic | physical exercise ocular variables ocular blood flow |
| url | https://vetmed.agriculturejournals.cz/artkey/vet-201909-0004_the-effect-of-moderate-treadmill-exercise-on-the-resistive-index-of-the-medial-long-posterior-ciliary-artery-in.php |
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