Perception of Muscular Effort During Dynamic Elbow Extension in Multiple Sclerosis.
Arch Phys Med Rehabil
; 97(2): 252-8, 2016 Feb.
Article
en En
| MEDLINE
| ID: mdl-26525526
OBJECTIVE: To investigate the perception of muscular effort in individuals with multiple sclerosis (MS) and healthy controls during dynamic contractions. DESIGN: Case-control study. SETTING: MS day care center. PARTICIPANTS: Individuals with MS (n=28) and controls (n=28) (N=56). INTERVENTIONS: Not applicable. MAIN OUTCOME MEASURES: Perceived muscular effort during dynamic elbow extensions was rated at 9 different weight intensities (10%-90% of 1-repetition maximum) in a single-blind, randomized order using the OMNI-Resistance Exercise Scale. Muscle activity of the triceps brachii muscle (lateral head) was measured via surface electromyography and normalized to maximal voluntary excitation. RESULTS: According to OMNI-level ratings, significant main effects were found for the diagnostic condition (F=27.33, P<.001, η(2)=.11), indicating 0.7 (95% confidence interval [CI], 0.3-1.1) lower mean OMNI-level ratings for MS, and for the intensity level (F=46.81, P<.001, η(2)=.46), showing increased OMNI-level ratings for increased intensity levels for both groups. Furthermore, significant main effects were found for the diagnostic condition (F=16.52, P<.001, η(2)=.07), indicating 7.1% (95% CI, -8.6 to 22.8) higher maximal voluntary excitation values for MS, and for the intensity level (F=33.09, P<.001, η(2)=.36), showing higher relative muscle activities for increasing intensity levels in both groups. CONCLUSIONS: Similar to controls, individuals with MS were able to differentiate between different intensities of weight during dynamic elbow extensions when provided in a single-blind, randomized order. Therefore, perceived muscular effort might be considered to control resistance training intensities in individuals with MS. However, training intensity for individuals with MS should be chosen at approximately 1 OMNI level lower than recommended, at least for dynamic elbow extension exercises.
Palabras clave
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Levantamiento de Peso
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Articulación del Codo
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Esfuerzo Físico
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Esclerosis Múltiple
Tipo de estudio:
Clinical_trials
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Observational_studies
Límite:
Female
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Humans
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Male
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Middle aged
Idioma:
En
Revista:
Arch Phys Med Rehabil
Año:
2016
Tipo del documento:
Article
Pais de publicación:
Estados Unidos