Does Performance-Related Information Augment the Maximal Isometric Force in the Elbow Flexors?
Appl Psychophysiol Biofeedback
; 46(1): 91-101, 2021 03.
Article
en En
| MEDLINE
| ID: mdl-33095393
ABSTRACT
The effects of different feedback conditions on the elbow flexors maximal voluntary isometric (MVIC) force were examined. In a single visit, twenty participants (10 males) were exposed to four conditions including, Visual only; (i.e., knowledge of results [VI]); Verbal encouragement (i.e., verbally stating pull, pull [VE]); VI and VE (VIVE); and no VI or VE (NOVIVE). Three, 5-s MVIC trials were completed for each condition. Separate 2 × 4 (sex × condition) repeated measures analyses of variance (ANOVA) were used to examine MVIC force, rate of force development (RFD200), and rate of electromyography (EMG) rise (RER200) for the 0-200-ms window. There was a significant main condition effect for MVIC force (p < 0.001). Significantly greater MVIC force was shown for VIVE compared to VE (p < 0.001) and NOVIVE (p = 0.002) conditions, and VI compared to VE (p = 0.011) and NOVIVE (p = 0.009) conditions. A significant sex × condition interaction (p = 0.036) was observed for RFD200, with significantly (p = 0.003) greater RFD200 in males compared to females, in the VI condition only. There were no significant differences in RFD200 among condition for males (p = 0.033) or females (p = 0.194). There was a significant main effect for sex (p = 0.006) for RER200, with significantly greater (p = 0.003) RER200 (conditions merged) in males (mean ± standard deviation (SD) 422.99 ± 124.67%), compared to females (220.68 ± 134.01%). Here we suggest the importance of providing VI feedback alone, or in conjunction with VE, for the measurement of elbow flexion MVIC. Additionally, these results provide a foundational framework for future studies aiming to improve feedback modalities during training or rehabilitation.
Palabras clave
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Músculo Esquelético
/
Codo
/
Rendimiento Físico Funcional
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Contracción Isométrica
Límite:
Adult
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Female
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Humans
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Male
Idioma:
En
Revista:
Appl Psychophysiol Biofeedback
Asunto de la revista:
CIENCIAS DO COMPORTAMENTO
/
PSICOFISIOLOGIA
Año:
2021
Tipo del documento:
Article
País de afiliación:
Estados Unidos