Effects of calf muscle conditioning upon ankle proprioception

Autor: Robert Griffin, Raymond F. Reynolds, Craig J. McAllister, Craig Smith, Amanda Dunn, Rufei Yang
Rok vydání: 2020
Předmět:
Male
Muscle Physiology
Physiology
Social Sciences
0302 clinical medicine
Skeletal Joints
Medicine and Health Sciences
Psychology
Musculoskeletal System
Feedback
Physiological
Multidisciplinary
Body movement
Ankle Joints
medicine.anatomical_structure
Medicine
Legs
Female
Sensory Perception
medicine.symptom
Right ankle
Anatomy
Muscle contraction
Muscle Contraction
Research Article
Muscle tissue
Adult
medicine.medical_specialty
Science
03 medical and health sciences
Young Adult
Physical medicine and rehabilitation
medicine
Humans
Muscle
Skeletal
Skeleton
Proprioception
business.industry
Ankles
Cognitive Psychology
Biology and Life Sciences
030229 sport sciences
Calf muscle
Body Limbs
Conditioning
Cognitive Science
Perception
Ankle
business
Skin Temperature
030217 neurology & neurosurgery
Neuroscience
Zdroj: PLoS ONE
PLoS ONE, Vol 15, Iss 8, p e0236731 (2020)
ISSN: 1932-6203
Popis: Ankle proprioception is crucial for balance and relies upon accurate input from calf muscle spindles. Spindle input, in turn, depends upon the physiological and mechanical properties of surrounding muscle tissue. Altering these properties could affect ankle proprioception, with potential consequences for balance. Here we determine the effects of prior muscle cooling, stretch and contraction upon performance of a contralateral ankle joint matching task. Participants stood passively leaning against a board oriented 22° rearward from vertical. Their right ankle was rotated to a randomised position between ± 6° plantar/dorsiflexion. The task was to align the left ankle to the same position, without vision. In the first experiment, immediately prior to each testing session, participants either produced a strong calf muscle contraction in a fully plantarflexed (tiptoe) posture or underwent 15° dorsiflexion stretch. Contraction had no effect on task performance, whereas stretch produced a significant bias in ankle placement of 0.89 ± 0.6°, indicating that participants perceived their foot to be more plantarflexed compared to a control condition. In the second experiment, the right lower leg was cooled in iced water (≤ 5°C) for 10 minutes. Cooling increased joint matching error by ~0.4°, through a combination of increased bias and variability. These results confirm that conditioning the triceps surae muscles can alter perception of ankle joint position. Since body movement during quiet stance is in the order of 1°, the magnitude of these changes are relevant for balance.
Databáze: OpenAIRE
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