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- Title
RESPOSTA DA VARIABILIDADE DA FREQUÊNCIA CARDÍACA E GLICEMIA DURANTE O EXERCÍCIO INCREMENTAL.
- Authors
da Silva Cavalcante, Marcos David; Reinert, Juliana; De-Oliveira, Fernando Roberto; de Cássio Moraes Bertuzzi, Rômulo; de Oliveira Pires, Flávio; Lima-Silva, Adriano Eduardo
- Abstract
Response of heart rate variability and blood glucose during incremental exercise. Brazilian Journal of Biomotricity, v. 4, n. 4, p. 256-265, 2010. As the exercise intensity increases during an incremental test, there is an increase in the activity of sympathetic nervous system (SNS), which seems to cause a gradual reduction in the heart rate variability (HRV). The SNS might also be related to a blood glucose threshold (GT) during incremental test. The purpose of this study was to verify if the GT occurs at the same intensity of the HRVT during an incremental test. Eight individuals (25.7 ± 4.3 years; 81.2 ± 10.0 kg; 179.6 ± 6.4 cm; 18.3 ± 2.1 % of fat body) rested for 5 min. The test was increased with 17.2 W/2 minutes (70 rpm). The R-R intervals (Polar S810i) and the blood glucose (Accu-Chek Advantage) were measured at rest and at final into each stage. There was no significant difference between LiVFC and LiGLI expressed in W (71.3 ± 30.5 vs 96.8 ± 38.9 W, respectively; P>0.05) as well as expressed in %Wmáx or %FCmáx (LiVFC3: 47.0 ± 15.4% e 73.3 ± 3.8%; LiGLI 66.3 ± 24.0% e 76.6 ± 18.1%, respectively; P>0.05). Thus, it could conclude that the two thresholds occur at the same intensity during incremental test and could be used as a reference for prescription of exercise intensity.
- Subjects
HEART beat; BLOOD sugar; HEART conduction system; PHYSICAL activity; HEALTH behavior; SYMPATHETIC nervous system; EXERCISE -- Social aspects; PHYSICAL fitness
- Publication
Brazilian Journal of Biomotricity, 2010, Vol 4, Issue 4, p256
- ISSN
1981-6324
- Publication type
Article