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- Publisher Website: 10.1080/00222890109603147
- Scopus: eid_2-s2.0-0035009022
- PMID: 11404211
- WOS: WOS:000168905700004
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Article: Changes in limb stiffness under conditions of mental stress
Title | Changes in limb stiffness under conditions of mental stress |
---|---|
Authors | |
Keywords | Limb stiffness Load perturbation Mental stress Stretch reflex |
Issue Date | 2001 |
Publisher | Routledge. The Journal's web site is located at http://www.tandf.co.uk/journals/titles/00222895.asp |
Citation | Journal Of Motor Behavior, 2001, v. 33 n. 2, p. 153-164 How to Cite? |
Abstract | In 2 experiments, the effects of mental stress on limb stiffness were investigated. The relative contribution to arm stiffness of individual muscle activity, co-contraction, muscle reflexes, and postural adjustments were examined. In each experiment, participants (N = 24, Experiment 1; N = 16, Experiment 2) held their supinated hand under a tray that they were required to return to horizontal after it had been suddenly released. Electromyographic activity in the biceps and triceps muscles was recorded, as were elbow and wrist angles and tray displacement. In Experiment 1, mental arithmetic stress was shown to lead to decreased tray displacement (i.e., increased resistance) compared with displacements under the control, unstressed condition, as well as to increased elbow flexion before tray release. In Experiment 2, the increased resistance to perturbation caused by mental stress was found to be independent of initial elbow angle, but to vary as a function of the amount of upward force exerted before tray release. The authors conclude that stress-induced increases in limb stiffness result from changes in the initial position of the elbow, specified by its angle, together with the initial force exerted by participants to counteract the mechanical perturbations. |
Persistent Identifier | http://hdl.handle.net/10722/176015 |
ISSN | 2023 Impact Factor: 1.1 2023 SCImago Journal Rankings: 0.441 |
ISI Accession Number ID | |
References |
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Van Loon, EM | en_US |
dc.contributor.author | Masters, RSW | en_US |
dc.contributor.author | Ring, C | en_US |
dc.contributor.author | Mcintyre, DB | en_US |
dc.date.accessioned | 2012-11-26T09:04:32Z | - |
dc.date.available | 2012-11-26T09:04:32Z | - |
dc.date.issued | 2001 | en_US |
dc.identifier.citation | Journal Of Motor Behavior, 2001, v. 33 n. 2, p. 153-164 | en_US |
dc.identifier.issn | 0022-2895 | en_US |
dc.identifier.uri | http://hdl.handle.net/10722/176015 | - |
dc.description.abstract | In 2 experiments, the effects of mental stress on limb stiffness were investigated. The relative contribution to arm stiffness of individual muscle activity, co-contraction, muscle reflexes, and postural adjustments were examined. In each experiment, participants (N = 24, Experiment 1; N = 16, Experiment 2) held their supinated hand under a tray that they were required to return to horizontal after it had been suddenly released. Electromyographic activity in the biceps and triceps muscles was recorded, as were elbow and wrist angles and tray displacement. In Experiment 1, mental arithmetic stress was shown to lead to decreased tray displacement (i.e., increased resistance) compared with displacements under the control, unstressed condition, as well as to increased elbow flexion before tray release. In Experiment 2, the increased resistance to perturbation caused by mental stress was found to be independent of initial elbow angle, but to vary as a function of the amount of upward force exerted before tray release. The authors conclude that stress-induced increases in limb stiffness result from changes in the initial position of the elbow, specified by its angle, together with the initial force exerted by participants to counteract the mechanical perturbations. | en_US |
dc.language | eng | en_US |
dc.publisher | Routledge. The Journal's web site is located at http://www.tandf.co.uk/journals/titles/00222895.asp | en_US |
dc.relation.ispartof | Journal of Motor Behavior | en_US |
dc.subject | Limb stiffness | - |
dc.subject | Load perturbation | - |
dc.subject | Mental stress | - |
dc.subject | Stretch reflex | - |
dc.subject.mesh | Adult | en_US |
dc.subject.mesh | Arm - Physiopathology | en_US |
dc.subject.mesh | Arousal - Physiology | en_US |
dc.subject.mesh | Electromyography - Methods | en_US |
dc.subject.mesh | Female | en_US |
dc.subject.mesh | Heart Rate - Physiology | en_US |
dc.subject.mesh | Humans | en_US |
dc.subject.mesh | Male | en_US |
dc.subject.mesh | Muscle Contraction - Physiology | en_US |
dc.subject.mesh | Muscle, Skeletal - Physiopathology | en_US |
dc.subject.mesh | Posture - Physiology | en_US |
dc.subject.mesh | Reflex, Stretch - Physiology | en_US |
dc.subject.mesh | Stress, Psychological - Physiopathology - Psychology | en_US |
dc.title | Changes in limb stiffness under conditions of mental stress | en_US |
dc.type | Article | en_US |
dc.identifier.email | Masters, RSW: mastersr@hku.hk | en_US |
dc.identifier.authority | Masters, RSW=rp00935 | en_US |
dc.description.nature | link_to_subscribed_fulltext | en_US |
dc.identifier.doi | 10.1080/00222890109603147 | - |
dc.identifier.pmid | 11404211 | - |
dc.identifier.scopus | eid_2-s2.0-0035009022 | en_US |
dc.relation.references | http://www.scopus.com/mlt/select.url?eid=2-s2.0-0035009022&selection=ref&src=s&origin=recordpage | en_US |
dc.identifier.volume | 33 | en_US |
dc.identifier.issue | 2 | en_US |
dc.identifier.spage | 153 | en_US |
dc.identifier.epage | 164 | en_US |
dc.identifier.isi | WOS:000168905700004 | - |
dc.publisher.place | United States | en_US |
dc.identifier.scopusauthorid | Van Loon, EM=36948374200 | en_US |
dc.identifier.scopusauthorid | Masters, RSW=7102880488 | en_US |
dc.identifier.scopusauthorid | Ring, C=7006494007 | en_US |
dc.identifier.scopusauthorid | McIntyre, DB=7102663995 | en_US |
dc.identifier.issnl | 0022-2895 | - |