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18.
Eur J Phys Rehabil Med ; 49(4): 507-15, 2013 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-23138675

RESUMEN

BACKGROUND: Strength training has been proposed by several authors to treat Lateral Epicondylitis. However, there is still a lack of information concerning muscle weakness and its relationship to imbalances and fatigability of forearm muscles during dynamic conditions in subjects after epicondylitis recovery. AIM: To analyze the relationship between lateral humeral epicondylitis, and forearm muscle strength and fatigue. SETTING: Rehabilitation specialized center POPULATION: Cross-sectional study in eight former epicondylitis men free of symptoms and actively working at the moment of the evaluation and eight healthy men volunteers. METHODS: Isokinetic tests were performed at different velocities in order to assess strength in concentric and eccentric contractions. Additionally, a long-term concentric test was carried out in order to analyze strength during endurance. The following variables were analyzed: Average torque of dorsal and palmar flexors of the wrist and ratio of agonist/antagonist for non-endurance contractions; length of initial and final plateaus and the slope of average torque decay during the endurance test. RESULTS: In both groups, average torque produced by palmar flexor muscles was higher than that produced by dorsal flexor muscles. Patients showed higher strength in palmar flexor muscles, whereas dorsal flexor strength was similar for both populations. Palmar flexor vs. dorsal flexor ratio was significantly higher in patients for eccentric contractions. Regarding fatigue, results showed that torque decreased earlier in patients. CONCLUSIONS AND CLINICAL REHABILITATION IMPACT: Both palmar flexor force and palmar/dorsal ratio in eccentric exercise were significantly higher in patients. This finding indicates a muscular imbalance in patients underlying the epicondylitis condition. Additionally, former patients fatigued earlier. Findings indicate that muscle imbalances and fatigability might be related to lateral epicondylitis. This information may be useful in the design and monitoring of programs intended for lateral epicondylitis rehabilitation. More studies are necessary to conclude if these differences are cause or consequence of the epicondylitis.


Asunto(s)
Fatiga Muscular/fisiología , Fuerza Muscular/fisiología , Debilidad Muscular/fisiopatología , Entrenamiento de Fuerza/métodos , Codo de Tenista/rehabilitación , Muñeca/fisiopatología , Adulto , Estudios Transversales , Antebrazo/fisiología , Antebrazo/fisiopatología , Humanos , Masculino , Contracción Muscular/fisiología , Dinamómetro de Fuerza Muscular , Debilidad Muscular/etiología , Músculo Esquelético/fisiología , Músculo Esquelético/fisiopatología , Resistencia Física/fisiología , Centros de Rehabilitación , España , Codo de Tenista/fisiopatología , Muñeca/fisiología
19.
Eur J Phys Rehabil Med ; 46(1): 81-8, 2010 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-20332731

RESUMEN

AIM: The aim of this study was to establish the test-retest reliability of a knee extensor and flexor muscle fatigue protocol using a biodex system 3 isokinetic dynamometer. METHODS: Three-outpatient Rehabilitation Departments undertook the study. Fatigue was evaluated in the dominant knee of 90 healthy female volunteers, non-sportswomen, aged between 20 and 40. They performed 40 consecutive concentric knee flexions and extensions, at 120 degrees /s, on a Biodex 3 isokinetic dynamometer. Two evaluations were done over a period of seven days. Analysed variables were: maximal repetition of total work, maximal work repetition number, work to body weight ratio, total work, work during first and last third of the protocol, fatigue ratio, work fatigue. Statistical analysis determined mean values, medians and box-plots. Intraclass Correlation Coefficients (ICC) (confidence interval 95 %), t-test and one-way analysis of variance (ANOVA) evaluated reliability. Difference of means (di), standard error of measurement (SEM) and 95% of interval confidence (IC di) were also calculated (P<0.05). RESULTS: All participants completed the study. Reliability data were excellent (ICC>0.75) for total work (0.85), work during first third (0.80) and last third (0.80) in extension, and for total work in flexion. Reliability data were fair to good (ICC 0.4-0.75) for the rest of the variables. Median varied less than 20% in all cases during test-retest. CONCLUSION: This knee fatigue protocol is reliable for flexion and extension, above all when using the total work as a variable. The desirability of multicentre studies in rehabilitation and standardisation of protocols is emphasised.


Asunto(s)
Rodilla/fisiología , Fatiga Muscular , Adulto , Femenino , Humanos , Reproducibilidad de los Resultados , Adulto Joven
20.
Trauma (Majadahonda) ; 20(4): 229-233, oct.-dic. 2009. tab
Artículo en Español | IBECS | ID: ibc-84338

RESUMEN

Objetivo: Conocer la discordancia entre la clínica y las pruebas complementarias en la patología del raquis lumbar. Pacientes y metodología: Estudiamos 64 pacientes (50 hombres, 14 mujeres), con una edad media de 45 años (rango: 33–55), que fueron evaluados con un dinamómetro para conocer la fuerza concéntrica y excéntrica de los músculos extensores de la columna lumbar. Padecían de lumbalgia, 36 procedían de accidente laboral y 28 de contingencia común. La mayoría de los hombres realizaban trabajos en la construcción y las mujeres trabajos de manipulación o en cadenas de montaje. Se obtuvo la sinceridad del esfuerzo mediante REC (índice excéntrico / concéntrico) y DEC (diferencia entre REC a velocidad alta y REC a velocidad baja). Resultados: La media de días desde la baja hasta realizar la prueba fue de 280 días en accidentes laborales y 157 días en las contingencias. En el 68% de las pruebas se registraron parámetros indicativos de esfuerzo máximo. En ellos se registraron unos valores deficitarios de extensores en modalidad excéntrica (50%) y concéntrica (60%). Conclusiones: La dinamometría isocinética de columna lumbar permite hacer una estimación sobre la funcionalidad de la columna (AU)


Objetive: To determine the discrepancy between the clinical manifestations and complementary test findings in lumbar spine disorders. Patients and methods: A total of 64 patients (50 males, 14 females) with a mean age of 45 years (range: 33-55) were subjected to dynamometric testing to determine concentric and eccentric strength of the extensor muscles of the lumbar spine. The patients presented lumbar disorders; 36 had suffered occupational accidents and 28 common contingencies. Most of the males worked in construction, while the women were involved in processing or assembly operations. Exertion sincerity was determined by REC (eccentric / concentric ratio) and DEC (difference between REC at high velocity and REC at low velocity). Results: The mean days from the start of sick leave to the moment of testing was 280 days in the case of occupational accidents and 157 days in the case of contingencies. Most of the tests (68%) registered parameters indicative of maximum exertion. These tests showed extensor deficiencies in the eccentric (50%) and concentric modalities (60%). Conclusions: Isokinetic dynamometry of the lumbar spine offers an estimation of spinal functionality (AU)


Asunto(s)
Humanos , Masculino , Femenino , Adulto , Persona de Mediana Edad , Enfermedades de la Columna Vertebral/prevención & control , Enfermedades de la Columna Vertebral/fisiopatología , Traumatismos Vertebrales/diagnóstico , Columna Vertebral/fisiología , Dinamómetro de Fuerza Muscular/tendencias , Dinamómetro de Fuerza Muscular , Dolor de la Región Lumbar/prevención & control , Dolor de la Región Lumbar/fisiopatología , Salud Laboral/estadística & datos numéricos , Dolor de la Región Lumbar/epidemiología , Servicios de Salud del Trabajador/estadística & datos numéricos , Medicina del Trabajo/normas
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