Video Experimental Relacionado
Updated: Feb 7, 2026
10:37
Transcranial Direct Current Stimulation tDCS for Memory Enhancement
Published on: September 18, 2021
15.8K
¿La estimulación transcraneal por corriente directa mejora el efecto hipoalgesico del ejercicio?
Aidan Lewis1,2, Ben Rattray2, Constantino Toufexis1,2
1Discipline of Psychology, Faculty of Health, University of Canberra, Australia.
Sports medicine and health science
|February 6, 2026
Resumen
La estimulación transcraneal por corriente directa (ETCC) anodal antes del ejercicio no mejoró la hipoalgesia inducida por el ejercicio (HIE) en adultos sanos. El estudio no encontró diferencias significativas en la reducción del dolor entre las condiciones de ETCC activa y simulada combinadas con ejercicio.
Área de la Ciencia:
- Neurociencia
- Manejo del dolor
- Fisiología del ejercicio
Sus antecedentes:
- La hipoalgesia inducida por el ejercicio (HIE) es un fenómeno conocido que disminuye la sensibilidad al dolor.
- La estimulación transcraneal por corriente directa (ETCC) se dirige a vías analgésicas similares y puede complementar el ejercicio.
- La investigación de la ETCC como adyuvante del ejercicio para la modulación del dolor es un área de investigación novedosa.
Objetivo del estudio:
- Determinar si la ETCC anodal mejora la hipoalgesia inducida por el ejercicio en comparación con el ejercicio solo.
- Comparar los efectos de la ETCC activa versus la ETCC simulada cuando se combina con ejercicio sobre la sensibilidad al dolor.
Principales métodos:
- Un diseño cruzado aleatorizado que involucra a 35 participantes sanos (edades 19-37).
- Los participantes se sometieron a familiarización, seguido de dos sesiones con ETCC anodal activa o simulada (2 mA, 10 min) sobre la corteza motora.
- La sensibilidad al dolor se evaluó utilizando el umbral del dolor a la presión antes y después de la ETCC, y después del ejercicio (contracción isométrica de agarre sostenida).
Principales resultados:
- El ejercicio aumentó significativamente el umbral del dolor (redujo la sensibilidad al dolor) en comparación con las mediciones pre y post-ETCC, independientemente de la condición de ETCC.
- No se observó una diferencia significativa en el aumento del umbral del dolor entre las condiciones de ETCC activa y ETCC simulada.
- La ETCC anodal sobre la corteza motora no proporcionó efectos hipoalgesicos adicionales más allá del ejercicio solo.
Conclusiones:
- La ETCC anodal activa aplicada sobre la corteza motora antes del ejercicio no aumenta los efectos hipoalgesicos del ejercicio en individuos sanos.
- Los hallazgos sugieren que la ETCC, bajo estos parámetros específicos, no es una intervención complementaria superior al ejercicio para mejorar la reducción del dolor.
Videos de Conceptos Relacionados
01:26Exercise Stress Test
1.4K
Introduction
Exercise stress testing, commonly known as a treadmill test, is a noninvasive procedure used to evaluate cardiovascular function and diagnose heart conditions.
Definition
An exercise stress test measures the heart's response to exertion using a treadmill or stationary bicycle. Chest electrodes record the heart's electrical activity through an ECG, and blood pressure is monitored regularly.
Purposes
Exercise stress testing, commonly known as a treadmill test, is a noninvasive procedure used to evaluate cardiovascular function and diagnose heart conditions.
Definition
An exercise stress test measures the heart's response to exertion using a treadmill or stationary bicycle. Chest electrodes record the heart's electrical activity through an ECG, and blood pressure is monitored regularly.
Purposes
1.4K
01:27Exercise and Muscle Performance
2.5K
Exercise induces a range of adaptations in muscle tissue, depending on the type and duration of activity. Such physical training can be broadly categorized into two types: endurance exercises and resistance exercises.
Endurance exercises
Endurance exercises involve running, swimming, or cycling, which require repetitive movements with low force output. When a person engages in endurance exercise, a few noticeable changes occur in their skeletal muscles. For instance, the number of capillaries...
Endurance exercises
Endurance exercises involve running, swimming, or cycling, which require repetitive movements with low force output. When a person engages in endurance exercise, a few noticeable changes occur in their skeletal muscles. For instance, the number of capillaries...
2.5K
01:17Exercise and Cardiac Output
2.0K
Regular physical activity is essential for maintaining cardiovascular health, with aerobic exercises being particularly effective. According to the American Heart Association, 150 minutes of moderate to intense aerobic exercise per week is recommended for a healthy heart. Aerobic activities may include brisk walking, running, bicycling, cross-country skiing, and swimming, ideally performed three to five times per week.
Sustained exercise increases the muscles' oxygen demand, which can be...
Sustained exercise increases the muscles' oxygen demand, which can be...
2.0K
01:10Electrical Current
7.2K
Electrical current is defined as the rate at which charge flows. When there is a large current present, such as that used to run a refrigerator, a large amount of charge moves through the wire in a small amount of time. If the current is small, such as that used to operate a handheld calculator, a small amount of charge moves through the circuit over a long period of time. The SI unit for current is the ampere (A), named for the French physicist André-Marie Ampère (1775–1836).
7.2K
01:20Exercise and Cardiovascular Response
4.5K
Exercise significantly impacts cardiovascular response, which is crucial for understanding patient health and designing effective treatment plans.
Light to moderate physical activity initiates a series of interconnected responses in the body. The heart rate modestly increases in anticipation of the workout, followed by widespread vasodilation as oxygen consumption by skeletal muscles increases. This results in decreased peripheral resistance, increased capillary blood flow, and accelerated...
Light to moderate physical activity initiates a series of interconnected responses in the body. The heart rate modestly increases in anticipation of the workout, followed by widespread vasodilation as oxygen consumption by skeletal muscles increases. This results in decreased peripheral resistance, increased capillary blood flow, and accelerated...
4.5K
03:00Self-Evaluation: Self-Enhancement and Self-Verification
5.8K
Social psychologists have documented that feeling good about ourselves and maintaining positive self-esteem is a powerful motivator of human behavior (Tavris & Aronson, 2008). In the United States, members of the predominant culture typically think very highly of themselves and view themselves as good people who are above average on many desirable traits (Ehrlinger, Gilovich, & Ross, 2005). Often, our behavior, attitudes, and beliefs are affected when we experience a threat to our...
5.8K