Coupling between muscle activities and muscle torques during horizontal-planar arm movements with direction reversal

Almeida, Gil Lúcio; Freitas, Sandra Maria Sbeghen Ferreira de; Marconi, Nadia

doi:10.1016/j.jelekin.2005.07.010

Cited by 18 publications

(22 citation statements)

References 22 publications

(49 reference statements)

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“…In the same way as for agonist EMG activity, muscle torque has also been shown to be modulated with increasing angular distance, for simple constrained³ and unconstrained 5,9 movements, and for reversal movements involving the shoulder and elbow joints 13,14,16 . Modulation of muscle torque with the distance moved has been found to occur for both acceleration and deceleration impulses, independent of whether the torque pattern is two-phase or three-phase.…”

Section: Kinetic Control Strategymentioning

confidence: 80%

“…Similar results have been observed by other authors 11,12 . EMG activity modulation strategies are also present in movements with reversal carried out in the horizontal plane involving the shoulder and elbow joints 13,14 . If, on the one hand, while carrying out aiming movements, the antagonist activity has the function of decelerating the limb so as to come to a halt at the target, in reversion movements this activity has three distinct functions: to decelerate the limb so as to stop at the target, to reverse the direction of movement and to accelerate the limb back to its starting position.…”

Section: Introductionmentioning

confidence: 99%

“…As a result, we move faster for greater distances when we launch the limb towards a target and when accelerating back to the original position 13,14 .…”

Section: Introductionmentioning

confidence: 99%

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Electromyographic and kinetic strategies to control movements

Marconi¹,

Almeida²,

Gottlieb³

2006

Rev. bras. fisioter.

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Introduction: This paper is a literature review on the electromyographic and kinetic strategies used by the central nervous system to control voluntary movement. Such strategies have been identified from carrying out simple and complex movements, with and without direction reversal. Objective: To discuss the set of rules used to modulate the muscle activity patterns and muscle torque generated during voluntary movements involving one and two joints. Electromyographic strategies used to control simple movements involving one or two joints are dealt with first. Kinetic strategies are discussed in terms of the generation and modulation of muscle torque to carry out simple and complex movements. Linear synergy between muscle activity and muscle torque and the correlation of the muscle torque generated between chain-linked joints are then discussed. The role of interactive forces in the control of movements is also discussed. Conclusion: Physical therapy practice requires a theoretical framework based on technical-scientific knowledge to guide it. Motor control theories are powerful tools for this. Such knowledge could be used towards understanding the adaptations and modifications in motor control mechanisms that occur as a result of disorders or disease.

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Section: Kinetic Control Strategymentioning

confidence: 80%

Section: Introductionmentioning

confidence: 99%

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Electromyographic and kinetic strategies to control movements

Marconi¹,

Almeida²,

Gottlieb³

2006

Rev. bras. fisioter.

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“…The EMG activity of a single-joint movement has been described by an important number of authors (Gottlieb et al 1992;Latash, 1993;Ives et al, 1993;Pezarat-Correia et al;Morrison and Anson, 1999;Schmidt and Lee, 1999;Milanovic et al, 2000, Prodoehl and Gottlieb, 2001, Almeida et al, 2006. These authors have observed that impact movement of a single joint show a biphasic or triphasic EMG pattern.…”

Section: Introductionmentioning

confidence: 99%

Influence of type of movement termination and sport practice on muscle activity during elbow extension movements. (Efecto del tipo de finalización del movimiento y práctica deportiva sobre la actividad muscular en el movimiento de extensión del codo).

Moreno¹,

Solana²,

Vaíllo³

et al. 2008

rev. int. cienc. deporte

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Influence of type of movement termination and sport practice on Influence of type of movement termination and sport practice on muscle activity during elbow extension movements. muscle activity during elbow extension movements.Efecto del tipo de finalización del movimiento y práctica Efecto del tipo de finalización del movimiento y práctica deportiva sobre la actividad muscular en el movimiento de deportiva sobre la actividad muscular en el movimiento de extensión del codo. extensión del codo.M o r e n o H e r n á n d e , F r a n c i s c o J .M i g u e l H e r n á n d e z U n i ve r s i t y Twenty participants were tested on rapid elbow extension movements. This experiment examined the effects of the type of termination (pointing vs. impact movements) and sport practice (karate vs. volleyball) on temporary specific electromyographic (EMG) and kinematic measures during elbow extension movements. EMG was recorded from triceps (main agonist) and biceps (main antagonist). The analysis of variance on the type of movement showed differences on the time from onset of EMG activation to peak EMG in agonist and antagonist when these variables are normalized to a proportion of total movement time. Also, correlation analysis showed strong correlations between the kinematic variables and the time from onset of EMG antagonist to peak EMG. This variable is the only EMG variable that presented differences in the analysis between sport groups. The results allow us to conclude that the delay in the biceps action expressed in the time from onset EMG activation to peak EMG normalized to a proportion of total movement time is an indicator of the performance level in fast movements.Correspondencia/correspondence: Francisco J. Moreno Hernández Miguel Hernández University Av. de la Universidad s/n, 03202, Elche (Alicante) E-Mail: fmoreno@umh.es.Key words: electromyography; elbow joint; volleyball; karate; impact movement; pointing movement.Palabras clave: electromiografía; articulación de codo; voleibol; kárate; movimiento de impacto; movimiento de marcaje.Veinte sujetos fueron evaluados durante la realización de rápi-dos movimientos de extensión del codo. En este trabajo se analizan los efectos que el tipo de finalización del movimiento (marcaje vs. golpeo) y el tipo de práctica deportiva (voleibol vs. kára-te) tienen sobre variables específicas temporales de electromiografía (EMG) como de tipo cinemático. Se registró la actividad EMG del tríceps (principal músculo agonista) y del bíceps (principal músculo antagonista). El análisis de varianza acerca del tipo de movimiento mostró diferencias respecto al tiempo de comienzo de la activación EMG hasta el pico de actividad EMG del agonista y antagonista cuando esas variables eran normalizadas con respecto al tiempo total de movimiento. Además, el análisis de correlación realizado mostró correlaciones significativas entre las variables cinemáticas y el tiempo desde el comienzo de la actividad EMG del antagonista hasta su pico de actividad. Esta variable es la única considerada acerca de la...

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“…1 --2 3 Hallett et al, 1975;Hallett and Marsden, 1979;Brown and Cooke, 1981;Hannaford andStark, 1985 1 Hallett andMarsden, 1979;Brown and Cooke, 1981;Flament et al, 1984;Hoffman andStrick, 1990 Engelhorn, 1983;Mustard andLee, 1987 2 Brown andCooke, 1990;Almeida et al, 20061 Corcos et al, 1989Gottlieb et al, 1989a3 Sanes and Jennings, 1984Cooke et al, 1985Sanes et al, 1985;Mills and Kimiskidis, 1996;MacKinnon and Rothwell, 2000Schmidt and Lee, 1999Schmidt and Lee, 1999Soechting and Lacquaniti, 1983van Sonderen et al, 1988;Kudo and Ohtsuki, 1998 Kudo and Ohtsuki …”

mentioning

confidence: 99%