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dc.contributor.authorDewhurst, Susanen_UK
dc.contributor.authorGraven-Nielsen, Thomasen_UK
dc.contributor.authorDe Vito, Giuseppeen_UK
dc.contributor.authorFarina, Darioen_UK
dc.description.abstractObjective: To investigate the effect of muscle temperature on force fluctuations during isometric contractions in young and older females. Methods: Fifteen young and 11 older subjects performed 3 · 30-s long submaximal isometric ankle dorsi-flexions (5%, 10%, and 15% of the maximal force). Tibialis anterior muscle temperature was monitored with an intramuscular probe and manipulated to obtain a cold, control, and warm condition. The coefficient of variation (CofV) and the relative power in the frequency bands 0–3 Hz (low), 4–6 Hz (middle), and 8–12 Hz (high) of the force signal were computed to characterise steadiness. Intramuscular EMG signals were recorded from the tibialis anterior muscle to assess motor unit discharge pattern. Results: CofV was higher in the older than in the young subjects (P < 0.001) in all conditions. In the older group only, CofV increased with cooling with respect to control temperature (P < 0.001), whereas in the young group only, relative power of force fluctuations at high frequency decreased with cooling. Motor unit discharge rate and inter-pulse interval variability were not different between groups and across temperatures. Conclusions: The findings indicate a different effect of temperature on the ability to maintain constant force in young and older subjects. Significance: These results highlight the risk of further impairment to the motor control of older individuals with varying temperature.en_UK
dc.publisherElsevier / International Federation of Clinical Neurophysiologyen_UK
dc.relationDewhurst S, Graven-Nielsen T, De Vito G & Farina D (2007) Muscle temperature has a different effect on force fluctuations in young and older women. Clinical Neurophysiology, 118 (4), pp. 762-769.;
dc.rightsThe publisher does not allow this work to be made publicly available in this Repository. Please use the Request a Copy feature at the foot of the Repository record to request a copy directly from the author; you can only request a copy if you wish to use this work for your own research or private study.en_UK
dc.subjectMotor uniten_UK
dc.subjectMuscle strengthen_UK
dc.subjectExercise for older peopleen_UK
dc.subjectExercise Physiological aspectsen_UK
dc.subjectBody Temperature Regulation physiologyen_UK
dc.subjectMotor neuronsen_UK
dc.titleMuscle temperature has a different effect on force fluctuations in young and older womenen_UK
dc.typeJournal Articleen_UK
dc.rights.embargoreason[Susan_Clin_neurophysiol1.pdf] The publisher does not allow this work to be made publicly available in this Repository therefore there is an embargo on the full text of the work.en_UK
dc.citation.jtitleClinical Neurophysiologyen_UK
dc.type.statusVoR - Version of Recorden_UK
dc.contributor.affiliationUniversity of Strathclydeen_UK
dc.contributor.affiliationAalborg Universityen_UK
dc.contributor.affiliationAalborg Universityen_UK
rioxxterms.typeJournal Article/Reviewen_UK
local.rioxx.authorDewhurst, Susan|en_UK
local.rioxx.authorGraven-Nielsen, Thomas|en_UK
local.rioxx.authorDe Vito, Giuseppe|en_UK
local.rioxx.authorFarina, Dario|en_UK
local.rioxx.projectInternal Project|University of Stirling|
Appears in Collections:Faculty of Health Sciences and Sport Journal Articles

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