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Ultrasound and Exercises in Knee Osteoarthritis

15 de julio de 2019 actualizado por: Raquel A. Casarotto, University of Sao Paulo General Hospital

Effect of Ultrasound Associated to Exercises in Patients With Knee Osteoarthritis

The aim of this investigation is to compare the effects of continuous (CUS) and pulsed (PUS) ultrasound associated with a program of exercises on pain, range of motion, muscle strength, functionality, mobility and activity in patients with knee osteoarthritis. Participants were randomized into five groups: Group I (in the first month, continuous ultrasound was applied), Group II (in the first month, pulsed ultrasound was applied), Group III (in the first and second month, the continuous ultrasound was applied), Group IV (in the first and second month, the pulsed ultrasound was applied) and Group V (patients received only exercise sessions for eight weeks).

Descripción general del estudio

Descripción detallada

Strong evidence suggests that joint exercises reduce pain and disability in patients with osteoarthritis. There is evidence that exercise is responsible for muscular strengthening and better flexibility, improved global function as well as better performance in activities of daily living (ADL).

There are two modes of US, continuous and pulsed. Continuous US (CUS) generates thermal effects by stimulating the process of tissue regeneration, changing cell membrane permeability and increasing intracellular calcium, while pulsed US (PUS) mainly produces non-thermal effects to increase tissue metabolism, enhance fibrous tissue extensibility and elevate pain threshold

Tipo de estudio

Intervencionista

Inscripción (Actual)

100

Fase

  • No aplica

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

50 años a 75 años (Adulto, Adulto Mayor)

Acepta Voluntarios Saludables

No

Géneros elegibles para el estudio

Todos

Descripción

Inclusion Criteria:

To be included in the study, participants needed to suffer knee osteoarthritis with osteoarthritis levels 2 - 4 according to Kellgren-Lawrence grade12, be aged between 50 and 75 years and suffer knee pain and functional disability for at least three months, according to the criteria of the American College for Rheumatology (ACR)13. Participants from both genders were included. The Kellgren and Lawrence grading of knee osteoarthritis is as follows: none (0), doubtful (1), minimal (2), moderate (3) and severe (4).

The ACR criteria of knee osteoarthritis are as follows:

  • Using history and physical examination: knee pain and three of the following - over 50 years old; less than 30 minutes of morning stiffness; bone tenderness; bone enlargement; no palpable warmth of synovial.
  • Using history, physical examination and radiographic findings: knee pain and one of the following - over 50 years old; less than 30 minutes of morning stiffness; crepitus on active motion; and osteophytes.
  • Using history, physical examination and laboratory findings: knee pain and five of the following - over 50 years old; less than 30 minutes of morning stiffness; bone tenderness; bone enlargement; no palpable warmth of synovial; crepitus on active motion; ESR <40 mm/h; rheumatoid factor <1: 40; synovial fluid sign of osteoarthritis.

Exclusion Criteria:

  • Participants were excluded if they had cancer, diabetes, symptomatic hip osteoarthritis, or used antidepressants, anti-inflammatory medications or anxiolytics during six months prior to enrollment.

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: Tratamiento
  • Asignación: Aleatorizado
  • Modelo Intervencionista: Asignación paralela
  • Enmascaramiento: Cuadruplicar

Armas e Intervenciones

Grupo de participantes/brazo
Intervención / Tratamiento
Experimental: Group I
(in the first month, continuous ultrasound was applied three times a week and in the second month patients performed only exercise sessions three times a week)

Group I In the first month, continuous ultrasound was applied three times a week. In the second month, patients performed only exercise sessions three times a week. In the ultrasound treatment, the following parameters were used: frequency of 1 MHz, intensity of 1.5 W/cm2 (temporal and spatial mean SATA), duty cycle of 100%, with application time of 5 minutes on the medial side and 5 minutes on lateral side of knee.

Exercises

The intervention was divided into three phases: P-1, P-2 and P-3 during eight weeks with three sessions a week. Each session lasted 45 minutes:

  • 10 minutes warming-up (treadmill, ergometer bike or rowing machine);
  • 30 minutes 2-3 sets with P-1, P-2 or P-3;
  • 5 minutes stretching (hamstrings, quadriceps, adductors, and gastrocmenius).
Experimental: Group II
(in the first month, pulsed ultrasound was applied three times a week and in the second month patients performed only exercise sessions three times a week)

Group II In the first month, pulsed ultrasound was applied three times a week. In the second month, patients performed only exercise sessions three times a week. In the treatment with the US, the following parameters were used: 1 MHz frequency, 2.5 w / cm2 intensity (temporal and spatial mean SATA), pulsed mode (25%), 5 minutes on the medial side and 5 minutes on the lateral side of the knee.

Exercises

The intervention was divided into three phases: P-1, P-2 and P-3 during eight weeks with three sessions a week. Each session lasted 45 minutes:

  • 10 minutes warming-up (treadmill, ergometer bike or rowing machine);
  • 30 minutes 2-3 sets with P-1, P-2 or P-3;
  • 5 minutes stretching (hamstrings, quadriceps, adductors, and gastrocmenius).
Experimental: Group III
(in the first month, the continuous ultrasound was applied three times a week and in the second month, three times a week, the continuous ultrasound associated with exercises was applied)

Group III In the first month, the continuous ultrasound was applied 3 times a week. In the second month, 3 times a week, the continuous ultrasound was applied associated with exercises. The parameters were used: frequency of 1 MHz, intensity of 1.5 w / cm2 (temporal and spatial mean SATA), continuous mode (100%), with application time of 5 minutes on the medial side and 5 minutes on lateral side of knee.

Exercises

The intervention was divided into three phases: P-1, P-2 and P-3 during eight weeks with three sessions a week. Each session lasted 45 minutes:

  • 10 minutes warming-up (treadmill, ergometer bike or rowing machine);
  • 30 minutes 2-3 sets with P-1, P-2 or P-3;
  • 5 minutes stretching (hamstrings, quadriceps, adductors, and gastrocmenius).
Experimental: Group IV
(in the first month, the pulsed ultrasound was applied three times a week and in the second month, three times a week, the pulsed ultrasound associated with exercises was applied)

Group IV In the first month, the pulsed ultrasound was applied three times a week. In the second month, three times a week, the pulsed ultrasound associated with exercises was applied. In the treatment with the US, the following parameters were used: 1 MHz frequency, 2.5 w / cm2 intensity (temporal and spatial mean SATA), pulsed mode (25%), 5 minutes on the medial side and 5 Minutes on the lateral side of the knee.

Exercises

The intervention was divided into three phases: P-1, P-2 and P-3 during eight weeks with three sessions a week. Each session lasted 45 minutes:

  • 10 minutes warming-up (treadmill, ergometer bike or rowing machine);
  • 30 minutes 2-3 sets with P-1, P-2 or P-3;
  • 5 minutes stretching (hamstrings, quadriceps, adductors, and gastrocmenius).
Experimental: Group V
(patients received only exercise sessions three times a week for eight weeks)

Group V Patients received only exercise sessions three times a week for two months.

Exercises

The intervention was divided into three phases: P-1, P-2 and P-3 during eight weeks with three sessions a week. Each session lasted 45 minutes:

  • 10 minutes warming-up (treadmill, ergometer bike or rowing machine);
  • 30 minutes 2-3 sets with P-1, P-2 or P-3;
  • 5 minutes stretching (hamstrings, quadriceps, adductors, and gastrocmenius).

¿Qué mide el estudio?

Medidas de resultado primarias

Medida de resultado
Medida Descripción
Periodo de tiempo
Pain Intensity Measure
Periodo de tiempo: eight weeks
Pain was assessed using a visual analogue scale (VAS)14 consisting of a 10 cm rule (without numbers). At the left side, 'no pain' is written, while on the right side, 'unbearable pain'. Patients were instructed to mark on the rule what their level of pain was.
eight weeks

Medidas de resultado secundarias

Medida de resultado
Medida Descripción
Periodo de tiempo
Functionality Measure
Periodo de tiempo: eight weeks
Functionality was measured using the Lequesne questionnaire,14 which consists of 11 questions about pain, discomfort and function. Scores range from 0 to 24 (from 'no' to 'extremely severe' dysfunction).
eight weeks
Range of motion
Periodo de tiempo: eight weeks
Range of motion for flexion of the knees was measured with the universal goniometer (AESCULAP), according to the methods described by Marques.
eight weeks
Muscular strength
Periodo de tiempo: eight weeks
Muscular strength was estimated at maximal isometric force for the quadriceps, using a portable dynamometer (Lafayette, USA). Under stabilized conditions, patients, sitting with knees flexed at 10o, 60o and 90o (measured by a goniometer),16 were asked to extend the legs as far as they could. Three trials were conducted and the mean value was obtained.
eight weeks
Activity
Periodo de tiempo: eight weeks
Activity was measured using the Western Ontario and McMaster Universities Osteoarthritis (WOMAC) questionnaire,17 which is self-administered and measures pain, frozen joints and physical activity. Increased scores indicate decreased activity.
eight weeks
Mobility and balance
Periodo de tiempo: eight weeks
Mobility and balance are evaluated by Timed Get Up and Go (TGUG)18 and 8 meters Test19. The TGUG quantifies in seconds the functional mobility through the time that the individual needs to perform the task of getting up from a chair, walking three meters, turning back towards the chair and sitting again. The 8-meter test measures the time and number of steps required for a person to walk for 8 meters.
eight weeks

Colaboradores e Investigadores

Aquí es donde encontrará personas y organizaciones involucradas en este estudio.

Investigadores

  • Investigador principal: Raquel A Casarotto, PhD, Sao Paulo University

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 enero de 2015

Finalización primaria (Actual)

1 de enero de 2016

Finalización del estudio (Actual)

1 de enero de 2017

Fechas de registro del estudio

Enviado por primera vez

17 de septiembre de 2018

Primero enviado que cumplió con los criterios de control de calidad

17 de septiembre de 2018

Publicado por primera vez (Actual)

19 de septiembre de 2018

Actualizaciones de registros de estudio

Última actualización publicada (Actual)

18 de julio de 2019

Última actualización enviada que cumplió con los criterios de control de calidad

15 de julio de 2019

Última verificación

1 de julio de 2019

Más información

Términos relacionados con este estudio

Otros números de identificación del estudio

  • CAAE: 47955315.7.0000.0065

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. .

Ensayos clínicos sobre Group I

3
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