GUILHERME VEIGA GUIMARAES
Projetos de Pesquisa
Unidades Organizacionais
Departamento de Cardio-Pneumologia, Faculdade de Medicina
Instituto do Coração, Hospital das Clínicas, Faculdade de Medicina
LIM/11 - Laboratório de Cirurgia Cardiovascular e Fisiopatologia da Circulação, Hospital das Clínicas, Faculdade de Medicina
Instituto do Coração, Hospital das Clínicas, Faculdade de Medicina
LIM/11 - Laboratório de Cirurgia Cardiovascular e Fisiopatologia da Circulação, Hospital das Clínicas, Faculdade de Medicina
15 resultados
Resultados de Busca
Agora exibindo 1 - 10 de 15
- Prescribing and Regulating Exercise with RPE after Heart Transplant: A Pilot Study(2015) CIOLAC, Emmanuel Gomes; CASTRO, Rafael Ertner; GREVE, Julia Maria D'Andrea; BACAL, Fernando; BOCCHI, Edimar Alcides; GUIMARAES, Guilherme VeigaPurpose The objective of this study is to analyze the use of the 6-20 RPE scale for prescribing and self-regulating heated water-based exercise (HEx) and land-based exercise (LEx) in heart transplant recipients. Methods Fifteen (five females) clinically stable heart transplant recipients (time since surgery = 4.0 2.5 yr) age 46.7 11.8 yr underwent a symptom-limited maximal graded exercise test on a treadmill to determine their HR at anaerobic threshold (HRAT), respiratory compensation point (HRRCP), and maximal effort (HRmax). After a week, patients were randomized to perform 30 min of both HEx (walking inside the pool) and LEx (treadmill walking) sessions at a pace between 11 and 13 on the 6-20 RPE scale and had their HR measured every 4 min. The interval between sessions was 48-72 h. Results No significant differences between sessions were found in the average HR during HEx and LEx. Patients showed a delay in HR increase during both interventions, with the stabilization beginning after 8 min of exercise. Exercise HR was maintained between the HRAT and HRRCP (in the aerobic exercise training zone) for the most part of both HEx (72% of HR measurements) and LEx (66% of HR measurements). Only a few HR measurements stayed below HRAT (HEx = 9%, LEx = 13%) or above HRRCP (HEx = 19%, LEx = 21%) during both exercise sessions. Conclusion Exercise HR was maintained in the aerobic exercise training zone (between HRAT and HRRCP) for the most part of both sessions, suggesting that the 6-20 RPE scale may be an efficient tool for prescribing and self-regulating HEx and LEx in heart transplant recipients.
- Exercise Training Improves Chronotropic Incompetence but not Heart Rate Recovery to Exercise in Heart Transplant Patients(2015) CIOLAC, Emmanuel Gomes; CASTRO, Rafael E.; BACAL, Fernando; BOCCHI, Edimar A.; GUIMARAES, Guilherme V.
- Hypotensive Effect of Heated Water-based Exercise in Older Individuals with Hypertension(2019) NGOMANE, Awassi Yophiwa; FERNANDES, Bianca; GUIMARAES, Guilherme Veiga; CIOLAC, Emmanuel GomesBlood pressure (BP) and hemodynamic response to heated water-based (HEx) vs. land-based exercise (LEx) were assessed in 15 (6 men) older hypertensives (age 66.4 +/- 4.9yr) under pharmacological treatment. Participants were randomly assigned to perform 30min of moderate-intensity HEx (walking inside the pool), LEx (walking on a treadmill) and non-exercise control (CON) intervention. Resting BP, arterial stiffness, endothelial reactivity and heart rate variability (HRV) were measured before, immediately after, and 45min after interventions. 24-h ambulatory BP monitoring was performed after interventions. Resting systolic (but not diastolic) BP reduced 9.9 +/- 3.1mmHg ( P <0.01) 45min after HEx only. 24-h systolic and diastolic, daytime diastolic and nightime systolic BP were lower ( P <0.05) after HEx than both LEx and CON. Daytime systolic BP was also lower ( P <0.05) after HEx than CON. Nighttime diastolic was not different between interventions. HEx-induced ambulatory BP reduction ranged 4.5 +/- 1.3mmHg (24-h diastolic BP) to 9.5 +/- 3.0mmHg (nighttime systolic BP), and persisted for 18/11h in systolic/diastolic BP, when compared with CON. No significant changes in arterial stiffness, endothelial reactivity and HRV were found during any intervention. These results suggest that HEx may have important implications for managing BP in older hypertensive under pharmacological treatment.
- Age Affects Exercise-Induced Improvements in Heart Rate Response to Exercise(2014) CIOLAC, E. G.; ROBERTS, C. K.; SILVA, J. M. Rodrigues da; GUIMARAES, G. V.The aim of the present study was to analyze the effects of age on cardiorespiratory fitness (CRF), muscle strength and heart rate (HR) response to exercise adaptation in women in response to a long-term twice-weekly combined aerobic and resistance exercise program. 85 sedentary women, divided into young (YG; n=22, 30.3 +/- 6.2 years), early middle-aged (EMG; n=28, 44.1 +/- 2.5 years), late middle-aged (LMG; n=20, 56.7 +/- 3.5 years) and older (OG; n=15, 71.4 +/- 6.9 years) groups, had their CRF, muscle strength (1-repetition maximum test) and HR response to exercise (graded exercise test) measured before and after 12 months of combined exercise training. Exercise training improved CRF and muscle strength in all age groups (P<0.05), and no significant differences were observed between groups. Exercise training also improved resting HR and recovery HR in YG and EMG (P<0.05), but not in LMG and OG. Maximal HR did not change in any group. Combined aerobic and resistance training at a frequency of 2 days/week improves CRF and muscle strength throughout the lifespan. However, exercise-induced improvements in the HR recovery response to exercise may be impaired in late middle-aged and older women.
conferenceObject Heated Water-based Exercise Training Reduces 24-hour Ambulatory Blood Pressure Levels In Resistant Hypertensive Patients: A Randomized Controlled Trial (HEx Trial)(2014) CRUZ, Lais G.; BOCCHI, Edimar Alcides; FERNANDES-SILVA, Miguel Morita; DOREA, Egidio Lima; GUIMARAES, Guilherme VeigaconferenceObject Hemodynamic and Functional Variables in Parkinson Disease Patients: High Intensity Interval versus Continuous Moderate Exercise Training(2018) FERNANDES, Bianca; BALBO, Julia L.; GUIMARAES, Guilherme V.; BARBIERI, Fabio A.; CIOLAC, Emmanuel G.- Cardiac Reinnervation Affects Blood Pressure and Cardiorespiratory Adaptation to Exercise after Heart Transplant(2019) CIOLAC, Emmanuel G.; CASTRO, Rafael E.; GGOMANE, Awassi Y.; VIANA, Ariane A.; BACAL, Fernando; BOCCHI, Edimar A.; GUIMARAES, Guilherme V.
- Prescribing high-intensity interval exercise by rating of perceived exertion in young individuals(2021) MARCAL, Isabela R.; FALQUEIRO, Pedro G.; FERNANDES, Bianca; NGOMANE, Awassi Y.; AMARAL, Vanessa T.; V, Guilherme Guimaraes; CIOLAC, Emmanuel G.BACKGROUND: We tested the hypothesis that the 6 to 20 rating of perceived exertion (RPE) is a cost-effective tool similar to heart rate (HR) response to cardiopulmonary exercise test for prescribing and self-regulating high-intensity interval exercise (HIIE). In this context, we analyzed if health-related responses to exercise are similar between HIIE prescribed and self-regulated by RPE (HIIERPE) and HIIE prescribed and regulated by HR response to cardiopulmonary exercise test (HIIERPE). METHODS: Twelve young (21 +/- 2 years) sedentary or insufficiently active individuals (weekly levels <150 minutes or 75 minutes of moderate- or vigorous-intensity physical activity, respectively) were randomly assigned to perform HIIERPE (25 minutes). HIIEHR (25 minutes) and control session (25 minutes of seated resting). Blood pressure, HR, and arterial stiffness (pulse wave velocity) were measured before, immediately after, and 30 minutes after each intervention. HR, speed, and distance were measured during exercise sessions. 24-hours ambulatory blood pressure was measured after each intervention. RESULTS: Exercise HR, speed, and distance, as well as blood pressure response to exercise were not different between HIIERPE and HIIEHR. Pulse wave velocity reduced (P<0.05) at postintemention in both HIIERPE (0.28 +/- 0.17 m/s) and HIIEHR (0.27 +/- 0.11 m/s). However, pulse wave velocity at recovery was lower than pre-intervention only during HIIERPE (0.30 +/- 0.10 m/s). CONCLUSIONS: These results suggest that RPE is a cost-effective tool for prescribing self-regulating HIIE and improving health-related variables in young individuals.
- Prescribing high-intensity interval exercise by RPE in individuals with type 2 diabetes: metabolic and hemodynamic responses(2019) VIANA, Ariane Aparecida; FERNANDES, Bianca; ALVAREZ, Cristian; GUIMARAES, Guilherme Veiga; CIOLAC, Emmanuel GomesWe tested the hypothesis that rating of perceived exertion (RPE) is a tool as efficient as the heart rate (HR) response to the cardiopulmonary exercise test (CPX) for prescribing and self-regulating high-intensity interval exercise (HIIE), and that metabolic and hemodynamic response to HIIE is superior than to continuous moderate-intensity exercise (MICE) in individuals with type 2 diabetes mellitus (T2DM). Eleven participants (age = 52.3 +/- 3 years) underwent HIIE prescribed and self-regulated by RPE (HIIERPE; 25 min), HIIE prescribed and regulated by an individual's HR response to CPX (HIIEHR; 25 min), MICE prescribed and self-regulated by RPE (30 min) and control (30 min of seated resting) intervention in random order. HR, blood pressure (BP), capillary glucose, endothelial reactivity, and carotid-femoral pulse wave velocity were assessed before, immediately after, and 45 min after each intervention. Exercise HR, speed, and distance were measured during exercise sessions. Twenty-four-hour ambulatory BP was measured after each intervention. Exercise HR, speed, and distance were similar between HIIERPE and HIIEHR. BP response was not different among HIIERPE, HIIEHR, and MICE. Capillary glycaemia reduction was greater (P < 0.05) after HIIERPE (48.6 +/- 9.6 mg/dL) and HIIEHR (47.2 +/- 9.5 mg/dL) than MICE (29.5 +/- 11.5 mg/dL). Reduction (P < 0.05) in 24-h (6.7 +/- 2.2 mm Hg) and tendency toward reduction (P = 0.06) in daytime systolic (7.0 +/- 2.5 mm Hg) ambulatory BP were found only after HIIERPE. These results suggest that HIIE is superior to MICE for reducing glycaemia and ambulatory BP, and that the 6-20 RPE scale is a useful tool for prescribing and self-regulating HIIE in individuals with T2DM.
- Postexercise Hypotension after Heart Transplant: Water- versus Land-Based Exercise(2016) CASTRO, Rafael Ertner; GUIMARAES, Guilherme Veiga; SILVA, Jose Messias Rodrigues Da; BOCCHI, Edimar Alcides; CIOLAC, Emmanuel GomesPurpose: Heart transplant recipients (HTx) have a high prevalence of hypertension. Although exercise training promotes blood pressure (BP) reduction in HTx, the effects of a single exercise bout are unknown. Thus, we analyzed the acute effects of heated water-based exercise (HEx) versus land-based exercise (LEx) on ambulatory BP (ABP) in HTx. Methods: Eighteen (six females) clinically stable HTx (time since surgery = 5.0 0.7 yr) age 45.7 2.7 yr underwent 30 min of HEx (walking inside the pool), LEx (walking on a treadmill), and nonexercise control (CON) intervention in random order (2-5 d between interventions). HEx and LEx intensity was set at 11-13 in the 6-20 RPE scale. Twenty-four-hour (24-h) ABP monitoring was performed after each intervention. Results: No significant differences between interventions were found in 24-h and nighttime BP. However, daytime diastolic BP was significantly lower after HEx than CON (-4 +/- 1.6 mm Hg, P = 0.03), and daytime diastolic BP tended to be lower after LEx than CON (-2.3 +/- 1.1 mm Hg, P = 0.052). Hourly analysis showed that systolic and diastolic BP values were lower after HEx (average reductions of 6.6 to 12.3 mm Hg, P < 0.01) and LEx (average reductions of 5 to 8.3 mm Hg, P < 0.05) than after CON in several hours. No significant differences between HEx and LEx were found in any ABP data. Conclusion: HEx and LEx promoted similar reductions in ABP of heart transplant recipients, which suggests that they may be a tool to counteract hypertension in this high-risk population.