Artikel
Resistance exercise elicits acute blood pressure reduction in type-2 diabetics
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Autoren
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Marcelo Sales
- Catholic University of Brasília, Brasília, Brazil
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Carmen Campbell
- Catholic University of Brasília, Brasília, Brazil
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Paulo Segundo
- Federal Institute of Roraima, Roraima, Brazil
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Herbert Simões
- Catholic University of Brasília, Brasília, Brazil
| Veröffentlicht: | 24. Oktober 2011 |
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Gliederung
Text
Objective: To analyze the occurrence of post-exercise hypotension (PEH) and cardiovascular and metabolic responses to aerobic (AE) and resistance exercises (RE) in type-2 diabetics.
Material/Methods: Nine type-2 diabetics performed 1) 20-min of cycling (AE) at lactate threshold intensity; 2) RE at 70%1RM, and 3) control session (CONT). For the RE, 3 sets of circuit training, composed by 6 exercises with 8 repetitions each, were performed with a 50-sec interval between sets and 1-min between circuit laps. Heart rate (HR), blood pressure (BP), blood lactate ([lac]), oxygen consumption (VO2) and rate of perceived exertion (RPE) were measured at rest, exercise or CONT and over the 120-min of post-session recovery.
Results: HR, BP, RPE and caloric expenditure measured immediately after exercise sessions did not differ between groups. Mean VO2 of RE (10.6±1.7) was lower than AE (13.3±1.4) (p<0.05). VO2 peak measured immediately after each RE bout (17.5±3.4) was higher than in AE (p<0.05) also showing a higher peak [lac] after RE (7.5±3.0 vs. 4.2±1.5mM) (p<0.05). The RE but not AE elicited PEH in systolic blood pressure, diastolic blood pressure and mean arterial pressure (MAP) (p<0.05). The MAP decrease after one hour of recovery in RE was ~5.3 mmHg, while AE elicited a non-significant decrease of ~1.9 mmHg. Only RE elicited diastolic PEH.
Figure 1 [Fig. 1], Table 1 [Tab. 1].
Conclusion: Only the 70%1RM RE circuit training model promoted PEH in type-2 diabetic individuals, perhaps due the higher cardiovascular and metabolic stress when compared to the AE session.
Acknowledgements: Fundação de Apoio a pesquisa do Distrito Federal – FAPDF
References
- 1.
- Motta D, Lima L, Arsa G, Russo P, Sales M, Moreira S, Morais P, Almeida W, Araujo R, Moraes M, Pesquero J, Simões H, Campbell C. Effect of type 2 diabetes on plasma kallikrein activity after physical exercise and its relationship to post-exercise hypotension. Diabetes Metab. 2010;36:363-8.
- 2.
- Morais PK, Campbell CSG, Sales MM, Mota DF, Moreira SR, Cunha V, et al. Acute resistance exercise is more effective than aerobic for 24 h blood pressure control in individuals with type 2 diabetes. Diabetes Metab. 2011;37(2):112-7.
