Resumen de Low-Intensity Resistance Exercise Reduces Hyperglycemia and Enhances Glucose Control Over a 24-Hour Period in Women With Type 2 Diabetes
Loumaira Carvalho da Cruz, Alfredo A. Teixeira-Araujo, Karoline T. Passos Andrade, Thaise Camila O. Gomes Rocha, Guilherme M. Puga, Sérgio R. Moreira
The study herein aimed to compare glucose concentration and hyperglycemic responses of 24 hours after resistance exercise (RE) performed in different intensities in patients with type 2 diabetes (T2D). Twelve women with T2D (55.2 +/- 4.0 years; 70.1 +/- 11.4 kg; and 155.7 +/- 3.3 cm) performed 4 experimental sessions divided into 2 blocks separated by 7 days and in randomized order: block-A (session-1: control-CONT40% and session-2: RE40% of one repetition maximum [1RM] test) and block-B (session-3: CONT80% and session-4: RE80%1RM). The RE sessions were performed over 40 minutes with 3 circuits of 7 exercises each, with 40%1RM and 80%1RM with 16 and 8 repetitions for each set, respectively. Glucose was monitored over 24 hours after each experimental session through continuous glucose-monitoring system. One-way ANOVA for repeated measures showed that area under the curve of glucose concentration was reduced (p <= 0.05) after RE40%1RM (193.738 +/- 33.186 mg[middle dot]dl-1 x 1.380 min-1) when compared with CONT40% (263.937 +/- 26.665 mg[middle dot]dl-1 x 1.380 min-1), CONT80% (254.721 +/- 35.836 mg[middle dot]dl-1 x 1.380 min-1), and RE80%1RM (263.966 +/- 62.795 mg[middle dot]dl-1 x 1.380 min-1). Hyperglycemia (>160 mg[middle dot]dl-1) was less prevalent (p <= 0.05) during the total period after RE40%1RM (20.8 +/- 21.2%) when compared with CONT40% (77.4 +/- 18.3%), CONT80% (69.4 +/- 24.6%), and RE80%1RM (66.0 +/- 33.7%). There was a lower hyperglycemic state in RE40%1RM (p <= 0.05) vs. CONT40%, CONT80%, and RE80%1RM after breakfast (1:25 +/- 0:54 vs. 4:00 +/- 0:00, 3:40 +/- 0:53, and 3:25 +/- 1:09 hours, respectively), lunch (1:25 +/- 2:03 vs. 4:55 +/- 0:17, 4:25 +/- 1:26, and 3:40 +/- 2:06 hours, respectively), and dinner (0:15 +/- 0:27 vs. 3:15 +/- 0:45, 3:25 +/- 0:47, and 2:50 +/- 1:31 hours, respectively). During the sleeping period, there was a lower hyperglycemic state (p <= 0.05) in RE40%1RM (0:20 +/- 0:39 hours) vs. RE80%1RM (4:05 +/- 3:08 hours). A single low-intensity RE40%1RM decreases hyperglycemic prevalence over a 24-hour period and ameliorates glucose control after meals and in sleeping periods in women with T2D.
