The intraocular pressure (IOP) is a dynamic value influenced by many factors as age, sex, diurnality, season, type and time of exercise (1). The physiological changes in the eye during exercise are studied in human, but not fully understood (2-3). The purpose of the present study was to gain more knowledge about how transient changes in systemic blood pressure, induced by exercise, affect IOP. Fifteen healthy dogs (8 male, 7 female) of different breeds participated in the present study. The median age was 2.9 y.o., the median body weight 14.14 Kg. The dogs were not familiar with the equipment. They underwent an exercise test on a motorized treadmill (professional canine treadmill, ® Grillo, Modena, Italy) for 45 min at the following speeds: 2.5 Km/h for 15 minutes, 5.0 Km/h for 20 and 2.5 Km/h for 10. IOP and BP was measured respectively with a Tonopen Vet (Medtronic, Solan–USA) and oscillometry equipment (VET HDO; S and B MedVet, Babenhausen, Germany) in three times: at rest (T0), before starting the treadmill session, immediately after the exercise (T1) and after 1 hour to it (T2). Also, at the recovery venous blood samples obtained from the cephalic vein were used for lactate dosage. Applicable data od IOP and BP are presented as the mean ± SEM. Student’s t-test was used to calculate significance between means value before the exercise, during the recovery and after 1 hour to conclusion of exercise. P < 0.05 was significant. The results are summarized in table 1. During the exercise, there was a gradual decrease on IOP and it not is directly related to systemic blood pressure. These values were not significant immediately at the end of exercise, but they were significant until at 1 hour after the exercise. Aerobic exercise is known to reduce intraocular pressure (IOP) in human (4-5). The mechanism lowering IOP it is not clear. It has also been suggested that exercise increases the facility of outflow leading to small increases in ocular blood flow (6-9). This study demonstrates in a population of young adult dogs that a period of dynamic exercise leads to significant changes in IOP and it seems not related to the changes of blood pressure.

Ragusa M., Zhang K., Quarta M., De Majo M., Pugliese M.

RAGUSA, MONICA;ZHANG, KAI;QUARTA, MICHELA;DE MAJO, Massimo;PUGLIESE, Michela
2014-01-01

Abstract

The intraocular pressure (IOP) is a dynamic value influenced by many factors as age, sex, diurnality, season, type and time of exercise (1). The physiological changes in the eye during exercise are studied in human, but not fully understood (2-3). The purpose of the present study was to gain more knowledge about how transient changes in systemic blood pressure, induced by exercise, affect IOP. Fifteen healthy dogs (8 male, 7 female) of different breeds participated in the present study. The median age was 2.9 y.o., the median body weight 14.14 Kg. The dogs were not familiar with the equipment. They underwent an exercise test on a motorized treadmill (professional canine treadmill, ® Grillo, Modena, Italy) for 45 min at the following speeds: 2.5 Km/h for 15 minutes, 5.0 Km/h for 20 and 2.5 Km/h for 10. IOP and BP was measured respectively with a Tonopen Vet (Medtronic, Solan–USA) and oscillometry equipment (VET HDO; S and B MedVet, Babenhausen, Germany) in three times: at rest (T0), before starting the treadmill session, immediately after the exercise (T1) and after 1 hour to it (T2). Also, at the recovery venous blood samples obtained from the cephalic vein were used for lactate dosage. Applicable data od IOP and BP are presented as the mean ± SEM. Student’s t-test was used to calculate significance between means value before the exercise, during the recovery and after 1 hour to conclusion of exercise. P < 0.05 was significant. The results are summarized in table 1. During the exercise, there was a gradual decrease on IOP and it not is directly related to systemic blood pressure. These values were not significant immediately at the end of exercise, but they were significant until at 1 hour after the exercise. Aerobic exercise is known to reduce intraocular pressure (IOP) in human (4-5). The mechanism lowering IOP it is not clear. It has also been suggested that exercise increases the facility of outflow leading to small increases in ocular blood flow (6-9). This study demonstrates in a population of young adult dogs that a period of dynamic exercise leads to significant changes in IOP and it seems not related to the changes of blood pressure.
File in questo prodotto:
Non ci sono file associati a questo prodotto.
Pubblicazioni consigliate

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11570/3094748
 Attenzione

Attenzione! I dati visualizzati non sono stati sottoposti a validazione da parte dell'ateneo

Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus ND
  • ???jsp.display-item.citation.isi??? ND
social impact