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Dynamic Neuromuscular Control of the Lower Limbs in Response to Unexpected Single-Planar versus Multi-Planar Support Perturbations in Young, Active Adults

Malfait, Bart ; Staes, Filip ; de Vries, Aijse ; Smeets, Annemie ; Hawken, Malcolm ; Robinson, Mark A ; Vanrenterghem, Jos ; Verschueren, Sabine Macaluso, Andrea

PloS one, 2015-07, Vol.10 (7), p.e0133147-e0133147 [Periódico revisado por pares]

United States: Public Library of Science

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Título:
Dynamic Neuromuscular Control of the Lower Limbs in Response to Unexpected Single-Planar versus Multi-Planar Support Perturbations in Young, Active Adults
Autor: Malfait, Bart ; Staes, Filip ; de Vries, Aijse ; Smeets, Annemie ; Hawken, Malcolm ; Robinson, Mark A ; Vanrenterghem, Jos ; Verschueren, Sabine
Macaluso, Andrea
Assuntos: Adult ; Adults ; Anterior cruciate ligament ; Anterior Cruciate Ligament - physiology ; Anterior Cruciate Ligament Injuries ; Athletes ; Biomechanical Phenomena ; Biomechanics ; Care and treatment ; Displacement ; Electromyography ; Exercise - physiology ; Female ; Females ; Health aspects ; Humans ; Injuries ; Injury prevention ; Kinesiology ; Kinetics ; Knee ; Knee Injuries - prevention & control ; Knee Joint - physiology ; Ligaments ; Lower Extremity - physiology ; Male ; Muscle function ; Muscle, Skeletal - physiology ; Muscles ; Neuromuscular system ; Posture ; Rehabilitation ; Science ; Sports injuries ; Variance analysis ; Young Adult ; Young adults
É parte de: PloS one, 2015-07, Vol.10 (7), p.e0133147-e0133147
Notas: ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
Competing Interests: The authors have declared that no competing interests exist.
Performed the experiments: BM ADV AS. Analyzed the data: BM ADV AS FS MH MAR JV SV. Contributed reagents/materials/analysis tools: BM MH MAR JV. Wrote the paper: BM ADV AS FS MH MAR JV SV.
Descrição: An anterior cruciate ligament (ACL) injury involves a multi-planar injury mechanism. Nevertheless, unexpected multi-planar perturbations have not been used to screen athletes in the context of ACL injury prevention yet could reveal those more at risk. The objective of this study was to compare neuromuscular responses to multi-planar (MPP) and single-planar perturbations (SPP) during a stepping-down task. These results might serve as a basis for future implementation of external perturbations in ACL injury screening programs. Thirteen young adults performed a single leg stepping-down task in eight conditions (four MPP and four SPP with a specified amplitude and velocity). The amplitudes of vastus lateralis (VL), vastus medialis (VM), hamstrings lateralis (HL), hamstrings medialis (HM) EMG activity, medio-lateral and anterior-posterior centre of mass (COM) displacements, the peak knee flexion and abduction angles were compared between conditions using an one-way ANOVA. Number of stepping responses were monitored during all conditions. Significantly greater muscle activity levels were found in response to the more challenging MPP and SPP compared to the less challenging conditions (p < 0.05). No differences in neuromuscular activity were found between the MPP conditions and their equivalents in the SPP. Eighteen stepping responses were monitored in the SPP versus nine in the MPP indicating that the overall neuromuscular control was even more challenged during the SPP which was supported by greater COM displacements in the SPP. The more intense MPP and SPP evoked different neuromuscular responses resulting in greater muscle activity levels compared to small perturbations. Based on the results of COM displacements and based on the amount of stepping responses, dynamic neuromuscular control of the knee joint appeared less challenged during the MPP. Therefore, future work should investigate extensively if other neuromuscular differences (i.e. co-activation patterns and kinetics) exist between MPP and SPP. In addition, future work should examine the influence on the neuromuscular control of the magnitude of the perturbations and the magnitude of stepping height and stepping distance.
Editor: United States: Public Library of Science
Idioma: Inglês

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Dynamic Neuromuscular Control of the Lower Limbs in Response to Unexpected Single-Planar versus Multi-Planar Support Perturbations in Young, Active Adults

Malfait, Bart ; Staes, Filip ; de Vries, Aijse ; Smeets, Annemie ; Hawken, Malcolm ; Robinson, Mark A ; Vanrenterghem, Jos ; Verschueren, Sabine Macaluso, Andrea

United States: Public Library of Science

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