Produção Nacional
Revisado por pares
The influence of intensity of exercise over periodical leg movement and obstructive sleep apnea syndrome: a case report
2010; Brazilian Association of Sleep and Latin American Federation of Sleep Societies; Volume: 3; Issue: 2 Linguagem: Inglês
ISSN
1984-0659
AutoresDaniel Alves Cavagnolli, Andrea Maculano Esteves, Alexandre Paulino de Faria, M Rossi, Lia Bittencourt, Sergio Tufik, Marco Túlio de Mello,
Tópico(s)Sleep and related disorders
ResumoStudy carried out at Hospital Sao Paulo, Universidade Federal de Sao Paulo � UNIFESP, Sao Paulo (SP), Brazil. 1 Departament of Psychobiology, Universidade Federal de Sao Paulo � UNIFESP, Sao Paulo (SP), Brazil. 2 Centro de Estudos em Psicobiologia e Exercicio (CEPE), Universidade Federal de Sao Paulo � UNIFESP, Sao Paulo (SP), Brazil. 3 Researcher for the Conselho Nacional de Desenvolvimento Cientifico e Tecnologico � CNPq, Brazil. Corresponding author: Marco Tulio de Mello � Departamento de Psicobiologia, UNIFESP � Rua Napoleao de Barros, �25 � Vila Clementino � CEP: 04024-002 � Sao Paulo (SP), Brazil � Tel.: (11) 55�2-01�� � Fax: (11) 214�-0155 � E-mail: tmello@psicobio.epm.br Received: September 13, 200�; Accepted: July 12, 2010 ABSTRACT There is evidence that regular exercises promote a number of changes and physiological benefits, and can be considered a non-pharmacological intervention, which improves the sleep quality of people who really do not have any sleep disorders. Yet, few studies have assessed how exercise can benefit a specific population with sleep disturbance. The aim of this study was to examine the influence of an aerobic training (AT) program of variable intensity in a sample of volunteers who had periodic leg movement (PLM) and obstructive sleep apnea syndrome (OSAS). The 51 year-old volunteer, body mass index (BMI) 2�.6� kg/m, sedentary, presenting PLM (rate>53.5/ hour) and OSAS (AHI index >12.�/hour) was submitted to aerobic training on a treadmill in the mornings 3 times a week, each session lasting 40 minutes, thus totaling �2 sessions. Prior to aerobic training , the volunteer took a maximum effort test (MET) so that prescription of safe aerobic training could be made. The first aerobic training was done at 60% of the VO2peak so that acute effects of exercise could be assessed. Sessions 2 up to 24 were performed at ventilation threshold 1 (VT1) and sessions 25 to 4� were performed between ventilation threshold 1 and ventilation threshold 2 while sessions 4� to �2 were done between VT1 and VT2, with predominance at VT2. Polysomnographic and maximum effort test tests were carried out every 6 months throughout the aerobic training period and one month after the �2 sessions (suspension of training). We demonstrate that aerobic training at the intensity of VT1 promoted a reduction in the rate of periodic leg movement in relation to baseline values (53.5/h to 3�.6/h). After the increase in intensity of aerobic training and a shift to the VT1 and VT2 range with predominance in VT2, the rate of periodic leg movement rose (63.�/h), and after one month of training suspension this rate was still higher than that of its corresponding moment baseline value (�2.�/h). The AHI also increased during heightened AT when AT was performed at the intensity of VT1 2�.�/h during AT compared to baseline 12.�. Such rates approached baseline values at VT1 and VT2 with predominance at VT2 (13.0/h) only to increase once again after one month suspension of training. AT at loads compatible with VT1 promoted enough improvement in the rate of periodic leg movement to down-grade the condition from severe to moderate, but sleep apnea syndrome increased at that intensity of exercise climbing from mild to moderate. Such results suggest that the benefits credited to AT have distinct mechanisms of action in periodic leg movement and sleep apnea syndrome
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