| The trampoline aftereffect: the motor and sensory modulations associated with jumping on an elastic surface. | |
| | |
MedLine Citation:
|
PMID: 20556367 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
|
After repeated jumps over an elastic surface (e.g. a trampoline), subjects usually report a strange sensation when they jump again overground (e.g. they feel unable to jump because their body feels heavy). However, the motor and sensory effects of exposure to an elastic surface are unknown. In the present study, we examined the motor and perceptual effects of repeated jumps over two different surfaces (stiff and elastic), measuring how this affected maximal countermovement vertical jump (CMJ). Fourteen subjects participated in two counterbalanced sessions, 1 week apart. Each experimental session consisted of a series of maximal CMJs over a force plate before and after 1 min of light jumping on an elastic or stiff surface. We measured actual motor performance (height jump and leg stiffness during CMJ) and how that related to perceptual experience (jump height estimation and subjective sensation). After repeated jumps on an elastic surface, the first CMJ showed a significant increase in leg stiffness (P < or = 0.01), decrease in jump height (P < or = 0.01) increase in perceptual misestimation (P < or = 0.05) and abnormal subjective sensation (P < or = 0.001). These changes were not observed after repeated jumps on a rigid surface. In a complementary experiment, continuous surface transitions show that the effects persist across cycles, and the effects over the leg stiffness and subjective experience are minimized (P < or = 0.05). We propose that these aftereffects could be the consequence of an erroneous internal model resulting from the high vertical forces produced by the elastic surface. |
| | |
Authors:
|
Gonzalo Márquez; Xavier Aguado; Luis M Alegre; Angel Lago; Rafael M Acero; Miguel Fernández-del-Olmo |
Related Documents
:
|
20820787 - Antennae in the hawkmoth manduca sexta (lepidoptera, sphingidae) mediate abdominal flex... 18590967 - Wheelchair propulsion demands during outdoor community ambulation. 20228337 - Influence of wing loading on the trade-off between pursuit-diving and flight in common ... 10333507 - Many-legged maneuverability: dynamics of turning in hexapods 22427997 - Time-frequency analysis of chemosensory event-related potentials to characterize the co... 19604797 - Development of binaural responses in the kitten inferior colliculus. |
Publication Detail:
|
Type: Journal Article; Research Support, Non-U.S. Gov't Date: 2010-06-17 |
Journal Detail:
|
Title: Experimental brain research. Experimentelle Hirnforschung. Expérimentation cérébrale Volume: 204 ISSN: 1432-1106 ISO Abbreviation: Exp Brain Res Publication Date: 2010 Aug |
Date Detail:
|
Created Date: 2010-07-14 Completed Date: 2010-12-10 Revised Date: - |
Medline Journal Info:
|
Nlm Unique ID: 0043312 Medline TA: Exp Brain Res Country: Germany |
Other Details:
|
Languages: eng Pagination: 575-84 Citation Subset: IM |
Affiliation:
|
Facultade de Ciencias do Deporte e a Educación Física (INEF Galicia), Departamento de Educación Física e Deportiva, Universidade da Coruña, Avd. Ernesto Che Guevara 121, Pazos-Liáns, 15179 Oleiros, A Coruña, España, Spain. |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
Adolescent Biomechanics Elastic Modulus Humans Leg / physiology* Male Motor Skills / physiology* Muscle Contraction / physiology* Sports Young Adult |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: Introduction to special issue on body representation: feeling, seeing, moving and observing.
Next Document: Using vision to control locomotion: looking where you want to go.