Acute Effects of Handgrip on Blood Pressure in Hypertensive Adults
29 de septiembre de 2021 actualizado por: Aline Mendes Gerage, Universidade Federal de Santa Catarina
Acute Effects of Handgrip on Vascular Function and Ambulatory Blood Pressure in Hypertensive Adults: A Randomized Controlled Trial
The effect of handgrip training on blood pressure reduction has been demonstrated in several studies.
However, acutely, there is still divergence regarding the effects of isometric handgrip exercise on blood pressure responses, especially when it is performed at different times of the day.
It is suggested that the magnitude of blood pressure reduction after a single exercise session is able to predict long-term blood pressure behavior.
Thus, understanding the effects of isometric handgrip exercise, performed at different times of the day, on blood pressure in adult hypertensive individuals acutely may help to understand the effects of this type of exercise chronically.
Descripción general del estudio
Estado
Terminado
Condiciones
Intervención / Tratamiento
Tipo de estudio
Intervencionista
Inscripción (Actual)
11
Fase
- No aplica
Contactos y Ubicaciones
Esta sección proporciona los datos de contacto de quienes realizan el estudio e información sobre dónde se lleva a cabo este estudio.
Ubicaciones de estudio
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Santa Catarina
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Florianopolis, Santa Catarina, Brasil, 88040-900
- Universidade Federal de Santa Catarina
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Criterios de participación
Los investigadores buscan personas que se ajusten a una determinada descripción, denominada criterio de elegibilidad. Algunos ejemplos de estos criterios son el estado de salud general de una persona o tratamientos previos.
Criterio de elegibilidad
Edades elegibles para estudiar
18 años y mayores (Adulto, Adulto Mayor)
Acepta Voluntarios Saludables
No
Géneros elegibles para el estudio
Todos
Descripción
Inclusion Criteria:
- diagnosis of hypertension controlled by up to three antihypertensive medications;
- SBP levels ≤ 180 mmHg and/or DBP ≤110 mmHg;
- no serious heart disease;
- no upper limb musculoskeletal injury that prevents the handgrip.
Exclusion Criteria:
- diagnosis of other cardiovascular diseases or diabetes during the study;
- change the class and/or dose of antihypertensive medication during the study;
- worsening of the disease (BP > 180 or use of four or more medications).
Plan de estudios
Esta sección proporciona detalles del plan de estudio, incluido cómo está diseñado el estudio y qué mide el estudio.
¿Cómo está diseñado el estudio?
Detalles de diseño
- Propósito principal: Otro
- Asignación: Aleatorizado
- Modelo Intervencionista: Asignación cruzada
- Enmascaramiento: Único
Armas e Intervenciones
Grupo de participantes/brazo |
Intervención / Tratamiento |
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Experimental: Handgrip exercise (morning)
The handgrip exercise session will be executed with four series (two in each arm) of two minutes of isometric contraction at 30% of maximum voluntary contraction, with a one-minute interval between series in the morning.
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The participants will be randomized into three sessions, handgrip exercise in the morning, handgrip exercise in the afternoon, and control performed in the morning to analyze the acute effects of handgrip exercise on blood pressure and vascular function at different times of the day.
After the morning sessions, ambulatory blood pressure will also be measured for 24 hours.
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Sin intervención: Control
In the control session, the participants will remain at rest for the same period of time as in the handgrip exercise protocol.
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Experimental: Handgrip exercise (afternoon)
The handgrip exercise session will be executed with four series (two in each arm) of two minutes of isometric contraction at 30% of maximum voluntary contraction, with a one-minute interval between series in the afternoon.
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The participants will be randomized into three sessions, handgrip exercise in the morning, handgrip exercise in the afternoon, and control performed in the morning to analyze the acute effects of handgrip exercise on blood pressure and vascular function at different times of the day.
After the morning sessions, ambulatory blood pressure will also be measured for 24 hours.
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¿Qué mide el estudio?
Medidas de resultado primarias
Medida de resultado |
Medida Descripción |
Periodo de tiempo |
|---|---|---|
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Change in Ambulatory Blood Pressure
Periodo de tiempo: 24 hours after the session
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The ambulatory blood pressure will be collected for a 24-hour period using an automatic device (Dyna-MAPA, Cardios, Brazil).
The device, duly calibrated, will be connected to a cuff, in the arm of preference, for the evaluation measurements.
The device will be programmed to take measurements throughout the day at 15-minute intervals and during the night every 30 minutes (between 11:00 p.m. and 7:00 a.m.).
All subjects will be given forms to record possible eventualities during the use of the device.
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24 hours after the session
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Medidas de resultado secundarias
Medida de resultado |
Medida Descripción |
Periodo de tiempo |
|---|---|---|
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Change of clinical blood pressure from pre to post session
Periodo de tiempo: Before, immediately after, 15 minutes and 30 minutes after the session.
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For the measurement of clinical blood pressure, the Omron HEM 742 automatic equipment will be used.
Initially, the participant will remain for 10 minutes in dorsal decubitus and then a cuff appropriate for the circumference of the participant's arm will be placed.
On the right arm, consecutive measurements will be taken, one minute apart, until a difference of less than 4 mmHg between two measurements is reached.
For analysis purposes, the average of the last two measurements will be used, as recommended by the 7th Brazilian Guideline on Hypertension.
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Before, immediately after, 15 minutes and 30 minutes after the session.
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Change in vascular function from pre to post session
Periodo de tiempo: Before, immediately after and 30 minutes after the session.
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The vascular function will be assessed using the flow-mediated dilation (FMD) technique using the LOGIQ S7 Expert ultrasound device (GE Healthcare), following the recommendations of Thijssen et al. (2019).
For FMD collection, the baseline diameter of the artery will be assessed before cuff inflation for a period of at least 30 seconds.
The cuff will then be inflated to 50 mmHg above the individual's systolic blood pressure for five minutes, and after this period, the cuff will be deflated and diameter measurement will be assessed for three minutes.
The post-deflation diameter measurement will start 30 seconds before the cuff is released.
Throughout the collection, continuous measurements of the brachial artery diameter (mm) using the Doppler function will be recorded for future analyses in percentage change.
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Before, immediately after and 30 minutes after the session.
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Colaboradores e Investigadores
Aquí es donde encontrará personas y organizaciones involucradas en este estudio.
Patrocinador
Investigadores
- Investigador principal: Aline M. Gerage, Dr., Universidade Federal de Santa Catarina
Fechas de registro del estudio
Estas fechas rastrean el progreso del registro del estudio y los envíos de resultados resumidos a ClinicalTrials.gov. Los registros del estudio y los resultados informados son revisados por la Biblioteca Nacional de Medicina (NLM) para asegurarse de que cumplan con los estándares de control de calidad específicos antes de publicarlos en el sitio web público.
Fechas importantes del estudio
Inicio del estudio (Actual)
1 de junio de 2021
Finalización primaria (Actual)
30 de agosto de 2021
Finalización del estudio (Actual)
30 de agosto de 2021
Fechas de registro del estudio
Enviado por primera vez
14 de abril de 2021
Primero enviado que cumplió con los criterios de control de calidad
19 de abril de 2021
Publicado por primera vez (Actual)
23 de abril de 2021
Actualizaciones de registros de estudio
Última actualización publicada (Actual)
30 de septiembre de 2021
Última actualización enviada que cumplió con los criterios de control de calidad
29 de septiembre de 2021
Última verificación
1 de septiembre de 2021
Más información
Términos relacionados con este estudio
Palabras clave
Términos MeSH relevantes adicionales
Otros números de identificación del estudio
- ACUTE HANDGRIP 2021
Plan de datos de participantes individuales (IPD)
¿Planea compartir datos de participantes individuales (IPD)?
NO
Información sobre medicamentos y dispositivos, documentos del estudio
Estudia un producto farmacéutico regulado por la FDA de EE. UU.
No
Estudia un producto de dispositivo regulado por la FDA de EE. UU.
No
Esta información se obtuvo directamente del sitio web clinicaltrials.gov sin cambios. Si tiene alguna solicitud para cambiar, eliminar o actualizar los detalles de su estudio, comuníquese con register@clinicaltrials.gov. Tan pronto como se implemente un cambio en clinicaltrials.gov, también se actualizará automáticamente en nuestro sitio web. .