Cycling above rather than below lactate threshold is more effective for nitric oxide release and post-exercise blood pressure reduction in individuals with type-2 diabetes

Asano, Ricardo Yukio; Browne, Rodrigo Alberto Vieira; Sotero, Rafael da Costa; Sales, Marcelo Magalhães; Moraes, José Fernando Vila Nova de; Campbell, Carmen Sílvia Grubert; Simões, Herbert Gustavo

doi:10.1590/s1980-65742013000300015

Cited by 8 publications

(23 citation statements)

References 30 publications

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“…Such benefits in the cardiovascular system are not exclusively derived from chronic adaptations once significant decreases in blood pressure values are commonly observed after a single bout of physical exercise – a phenomenon called post-exercise hypotension (PEH) 8–14. These findings suggest that the chronic effects of RT can be a result of a sum of the acute effects 9.…”

Section: Introductionmentioning

confidence: 99%

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Acute effects of power and resistance exercises on hemodynamic measurements of older women

Coelho-Júnior¹,

Irigoyen²,

Aguiar³

et al. 2017

CIA

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PurposeThe purpose of this study was to compare the acute effects of resistance training (RT) and power training (PT) on the hemodynamic parameters and nitric oxide (NO) bioavailability of older women.Materials and methodsA randomized experimental design was used in this study. Twenty-one older women (age: 67.1±4.6 years; body mass index: 28.03±4.9 kg/m2; systolic blood pressure: 135.1±21.1 mmHg) were recruited to participate in this study. Volunteers were randomly allocated into PT, RT, and control session (CS) groups. The PT and RT groups underwent a single session of physical exercise equalized by training volume, characterized by 3 sets of 8–10 repetitions in 8 different exercises. However, RT group performed exercise at a higher intensity (difficult) than PT (moderate) group. On the other hand, concentric contractions were faster in PT group than in RT group. Hemodynamic parameters and saliva samples (for NO quantification) were collected before and during an hour after exercise completion.ResultsResults demonstrated post-exercise hypotension during 35 minutes in the PT when compared to rest period (P=0.001). In turn, RT showed decreased heart rate and double product (P<0.001) during the whole evaluation period after exercise completion compared with the rest period. NO levels increased in the PT and RT during the whole evaluation period in relation to rest period. However, there were no differences between PT, RT, and CS regarding hemodynamic and NO evaluations.ConclusionData indicate that an acute session of power and resistance exercise can be effective to cause beneficial changes on hemodynamic parameters and NO levels in older women.

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Section: Introductionmentioning

confidence: 99%

“…Several mechanisms seem to be associated with PEH, such as a better functioning of the cardiac and peripheral autonomic control and an increased bioavailability of vasoactive substances 8,14,19. One of the most widely studied vasoactive substances is nitric oxide (NO).…”

Section: Introductionmentioning

confidence: 99%

Acute effects of power and resistance exercises on hemodynamic measurements of older women

Coelho-Júnior¹,

Irigoyen²,

Aguiar³

et al. 2017

CIA

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“…Higher intensity exercise was associated with more: neuromuscular activity, muscle mass involved, and metabolic demand during and after exercise. [9]. These adaptations may be related to a larger activity of endocrine and metabolic systems, together with elevated cardiovascular and respiratory responses leading to EPOC [7,8].…”

Section: Discussionmentioning

confidence: 99%

“…With increasing exercise intensity, the body has a greater reliance on carbohydrate as a source of fuel, activating the catecholamine signaling pathway to increase hepatic glucose production and transient hyperglycemia that would last 1-2 hours post-exercise [9]. Therefore, performing maximum intensity exercise can promote risks inherent to the disease itself, which precludes applying this prescription to the referred population.…”

Section: Introductionmentioning

confidence: 99%

“…Therefore, performing maximum intensity exercise can promote risks inherent to the disease itself, which precludes applying this prescription to the referred population. On the other hand, high-intensity exercise has been shown to be more effective for post-exercise blood pressure control [9]. However, the effect of exercise intensity on the amount of fat and carbohydrate oxidation during and after exercise needs clarification to optimize exercise prescription for T2D.…”

Section: Introductionmentioning

confidence: 99%

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High-intensity, but not moderate-intensity, exercise increases post-exercise rate of fat oxidation in type 2 diabetics

et al. 2016

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Background: Aerobic exercise is recommended for glycemic and weight control in type 2 diabetes (T2D), but exercise intensity that increase post-exercise fat oxidation has not been established yet. It is expected that high-intensity exercise induce higher absolute oxidations and rates of oxidation of CHO (during) and fat (after) in normoglycemic, but in hyperglycemic it is unclear. Aim: To compare the effects of exercise intensity on CHO and fat oxidation during and after exercise in individuals with T2D. Methods: Eleven persons with T2D, randomly underwent three experimental sessions 72 hours apart: 1) 20 minute of high-intensity exercise (120% of lactate threshold (LT) -120%LT), 2) 20 minute of moderate-intensity exercise (80% of LT -80%LT), and 3) 20 minute of control session (CON) -no exercise was performed and the individuals remained seated during the whole time. Percentages of CHO and fat contribution and CHO and fat oxidation rate (mg/min) were analyzed during and after sessions. Results: The rate of CHO oxidation during exercise was significantly higher during 120%LT in relation to 80%LT and CON (18.2 ± 5.6 vs. 9.5 ± 2.7 vs. 1.1 ± 0.4 mg•min −1 ), the absolute rate of fat oxidation was significantly higher in 120%LT compared to 80%LT and CON during exercise (13.5 ± 3.3, 9.5 ± 2.2, and 0.7 ± 0.2 mg•min, respectively, p < 0.05). During the post-exercise oxygen consumption recovery period, only the 120%LT had higher fat oxidation (94.5% vs. 68.1%, p < 0.05), when compared to CON. Both exercise sessions equally elicited a lowered glycaemia during the post-exercise period, but CHO oxidation was lower after 120%LT than CON (0.1 ± 0.2 vs. 0.9 ± 0.5 mg•min −1 , p < 0.05). Conclusions:Higher intensity elicited an elevated CHO oxidation rate during exercise and a higher percentage of fat utilization during the post-exercise recovery period compared to moderate-intensity exercise and control sessions. Relevance for patients: High-intensity aerobic exercise, even of short duration, may benefit individuals with T2D on the substrate oxidation related to the body fat. Exercise can be an important tool for the prevention and management of T2D due to its effects on carbohydrate and fat metabolism, reduction of body fat, and control of blood glucose.Keywords: metabolic disease adipose tissue oxidation blood glucose physical exercise diabetes 56

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Low blood pressure is sustained during subsequent activities of daily living performed after power training in older women

et al. 2017

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The present study aimed to examine the effects of a prior session of power training on blood pressure values during tasks that mimic the activities of daily living in hypertensive and normotensive older women. A randomized crossover experimental design was used for this study. Eleven older women (age, 66.1±1.2 years; body mass index, 26.7±4.8 kg/m2; systolic blood pressure, 133.9±23.4 mmHg) were recruited to participate. Volunteers were randomly underwent to a single session of physical exercise equalized by training volume, characterized by 3 sets of 8–10 repetitions in 8 different exercises. However, Power training session was performed at a higher intensity (moderate) than Sham session (rest/very, very easy ). Immediately after the end of the exercise session, subjects were assigned to perform five tasks that mimic the activities of daily living. Hemodynamic parameters were recorded before and immediately after the session of physical exercise, as well as in the end of each of the tasks. Results demonstrated significant elevations in systolic blood pressure and pulse pressure values during the performance of the tasks after the Sham session. However, values were not altered in the power training session. Data of the present study indicate that an acute session of power training can maintain blood pressure values lower during the subsequent performance of tasks that mimic activities of daily living in older women.

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Cycling above rather than below lactate threshold is more effective for nitric oxide release and post-exercise blood pressure reduction in individuals with type-2 diabetes

Cited by 8 publications

References 30 publications

Acute effects of power and resistance exercises on hemodynamic measurements of older women

Acute effects of power and resistance exercises on hemodynamic measurements of older women

High-intensity, but not moderate-intensity, exercise increases post-exercise rate of fat oxidation in type 2 diabetics

Low blood pressure is sustained during subsequent activities of daily living performed after power training in older women

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