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      The accute effects of resistance exercise on intraocular pressure Translated title: Efeitos agudos do exercício de resistência na pressão intra-ocular

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          Abstract

          PURPOSE: To study intraocular pressure (IOP) variations in healthy volunteers after weight lifting, in the supine position. METHODS: A descriptive study was designed. Thirty-four individuals were preselected for this study, and a group of 25 volunteers fulfilled the inclusion criteria for joining the initial phase of this research. All of them were healthy without glaucoma. They were asked to lift an 85% top load in the supine position for 8 times. IOP was measured before and after the exercise. Student's t test was used to analyze the IOP variations. RESULTS: A small, but significant IOP decrease (1.61 mmHg) was obtained after exposing 25 individuals (49 eyes) to a specific physical effort. CONCLUSIONS: After a session of weight lifting in the supine position with 85% top load for 8 repetitions, there is a small, but significant IOP decrease.

          Translated abstract

          OBJETIVO: Estudar as variações da pressão intra-ocular (Po) após o levantamento de peso na posição supina, em voluntários saudáveis. MÉTODOS: Um estudo descritivo foi desenhado. Trinta e quatro voluntários foram pré-selecionados e 25 preencheram os critérios de inclusão para a fase final desta pesquisa. Aos voluntários, sadios, não portadores de glaucoma, foi solicitado que se levantasse peso na posição supina, com 85% da carga máxima, em série de 8 repetições. A Po foi aferida antes e após o esforço. Os resultados foram analisados pelo teste t de Student. RESULTADOS: houve pequena, mas significante diminuição da Po de 1,61 mmHg após a exposição dos 25 indivíduos (49 olhos) ao esforço físico específico. CONCLUSÕES: após o esforço físico de levantamento de peso em posição supina, e 85% da carga máxima, em 8 repetições, ocorre pequena, mas significativa redução da Po.

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          Most cited references21

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          Correlates of acute exercise-induced ocular hypotension.

          To understand those factors that determine the decrease in intraocular pressure (IOP) that occurs during acute dynamic exercise. Three aspects of the exercise-IOP relationship were studied. These included graded exercise, with and without CO2 addition for isocapnia; comparison of the IOP response of trained and sedentary subjects to a fixed external work load; and exercise after ocular beta-adrenoceptor blockade. Graded exercise consisted of 7 minutes each at 30 and 90 watts on a cycle ergometer, then progressive work to exhaustion. Trained and sedentary subjects were defined on the basis of the blood lactate response to fixed external work (10 minutes at 90 watts). Selective beta 1-adrenoceptor blockade (betaxolol) and nonselective beta-adrenoceptor blockade (levobunolol) were superimposed on graded exercise. Intraocular pressure was measured using applanation tonometry. Graded exercise: Intraocular pressure decreased in proportion to exercise intensity. Hypocapnia developed in the last minutes of exhausting work, but preventing hypocapnia with CO2 addition failed to lessen the decrease in IOP. Response to fixed external work load: Intraocular pressure decreased significantly more in sedentary than in trained subjects; this decline was correlated with elevations in blood lactate but not with changes in metabolic rate or plasma osmolarity. Selective and nonselective beta-adrenoceptor blockade: Both drugs lowered IOP at baseline and throughout graded exercise; the drugs and exercise had apparently additive ocular hypotensive effects. Acute dynamic exercise lowers IOP in a graded fashion proportional to relative, not absolute, work load. The IOP decline is correlated with blood lactate but not with PCO2 or plasma osmolarity changes, and exercise potentiates the ocular hypotensive effects of beta-adrenoceptor blockade.
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            Ocular pressure patterns in the Valsalva maneuver.

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              Exercise-induced increase of intraocular pressure in the pigmentary dispersion syndrome.

              A 32-year-old man with pigmentary dispersion syndrome had blurred vision and halos after strenuous exercise, associated with a release of pigment into the anterior chamber and increased intraocular pressure (IOP). Additionally, he had typical symptoms after emotional stress or exposure to dim illumination, and had a high IOP without angle closure during a darkroom provocative test. The exercise-induced symptoms and the increase of IOP were prevented by the use of pilocarpine 0.5% drops immediately before exercise.
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                Author and article information

                Contributors
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Journal
                abo
                Arquivos Brasileiros de Oftalmologia
                Arq. Bras. Oftalmol.
                Conselho Brasileiro de Oftalmologia (São Paulo )
                1678-2925
                August 2003
                : 66
                : 4
                : 431-435
                Affiliations
                [1 ] Universidade de Brasília Brazil
                [2 ] Universidade Católica de Brasília Brazil
                [3 ] Universidade Católica de Brasília Brazil
                Article
                S0004-27492003000400007
                10.1590/S0004-27492003000400007
                1e0649c0-e234-46bb-b18a-7a32a611aaaf

                http://creativecommons.org/licenses/by/4.0/

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                SciELO Brazil

                Self URI (journal page): http://www.scielo.br/scielo.php?script=sci_serial&pid=0004-2749&lng=en
                Categories
                OPHTHALMOLOGY

                Ophthalmology & Optometry
                Intraocular pressure,Weight lifting,Sports,Pressão intra-ocular,Levantamento de peso,Esportes

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