Mechanisms of head stability during gait initiation in young and older women: A neuro-mechanical analysis
Decreased head stability has been reported in older women during locomotor transitions such as the initiation of gait. The aim of the study was to investigate the neuro-mechanical mechanisms underpinning head stabilisation in young and older women during gait initiation. Eleven young (23.1 ± 1.1 yrs...
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| Veröffentlicht in: | Journal of electromyography and kinesiology 2018-02, Vol.38, p.103-110 |
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| creator | Maslivec, A. Bampouras, T.M. Dewhurst, S. Vannozzi, G. Macaluso, A. Laudani, L. |
| description | Decreased head stability has been reported in older women during locomotor transitions such as the initiation of gait. The aim of the study was to investigate the neuro-mechanical mechanisms underpinning head stabilisation in young and older women during gait initiation. Eleven young (23.1 ± 1.1 yrs) and 12 older (73.9 ± 2.4 yrs) women initiated walking at comfortable speed while focussing on a fixed visual target at eye level. A stereophotogrammetric system was used to assess variability of angular displacement and RMS acceleration of the pelvis, trunk and head, and dynamic stability in the anteroposterior and mediolateral directions. Latency of muscle activation in the sternocleidomastoid, and upper and lower trunk muscles were determined by surface electromyography. Older displayed higher variability of head angular displacement, and a decreased ability to attenuate accelerations from trunk to head, compared to young in the anteroposterior but not mediolateral direction. Moreover, older displayed a delayed onset of sternocleidomastoid activation than young. In conclusion, the age-related decrease in head stability could be attributed to an impaired ability to attenuate accelerations from trunk to head along with delayed onset of neck muscles activation. |
| doi_str_mv | 10.1016/j.jelekin.2017.11.010 |
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The aim of the study was to investigate the neuro-mechanical mechanisms underpinning head stabilisation in young and older women during gait initiation. Eleven young (23.1 ± 1.1 yrs) and 12 older (73.9 ± 2.4 yrs) women initiated walking at comfortable speed while focussing on a fixed visual target at eye level. A stereophotogrammetric system was used to assess variability of angular displacement and RMS acceleration of the pelvis, trunk and head, and dynamic stability in the anteroposterior and mediolateral directions. Latency of muscle activation in the sternocleidomastoid, and upper and lower trunk muscles were determined by surface electromyography. Older displayed higher variability of head angular displacement, and a decreased ability to attenuate accelerations from trunk to head, compared to young in the anteroposterior but not mediolateral direction. Moreover, older displayed a delayed onset of sternocleidomastoid activation than young. In conclusion, the age-related decrease in head stability could be attributed to an impaired ability to attenuate accelerations from trunk to head along with delayed onset of neck muscles activation.</description><identifier>ISSN: 1050-6411</identifier><identifier>EISSN: 1873-5711</identifier><identifier>DOI: 10.1016/j.jelekin.2017.11.010</identifier><identifier>PMID: 29195138</identifier><language>eng</language><publisher>England: Elsevier Ltd</publisher><subject>Acceleration ; Adult ; Aged ; Aging - physiology ; Balance ; Biomechanical Phenomena ; Electromyography ; Fall risk ; Female ; Gait ; Head Movements ; Humans ; Male ; Movement variability ; Muscle, Skeletal - growth & development ; Muscle, Skeletal - physiology ; Postural Balance</subject><ispartof>Journal of electromyography and kinesiology, 2018-02, Vol.38, p.103-110</ispartof><rights>2017 The Authors</rights><rights>Copyright © 2017 The Authors. Published by Elsevier Ltd.. 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The aim of the study was to investigate the neuro-mechanical mechanisms underpinning head stabilisation in young and older women during gait initiation. Eleven young (23.1 ± 1.1 yrs) and 12 older (73.9 ± 2.4 yrs) women initiated walking at comfortable speed while focussing on a fixed visual target at eye level. A stereophotogrammetric system was used to assess variability of angular displacement and RMS acceleration of the pelvis, trunk and head, and dynamic stability in the anteroposterior and mediolateral directions. Latency of muscle activation in the sternocleidomastoid, and upper and lower trunk muscles were determined by surface electromyography. Older displayed higher variability of head angular displacement, and a decreased ability to attenuate accelerations from trunk to head, compared to young in the anteroposterior but not mediolateral direction. Moreover, older displayed a delayed onset of sternocleidomastoid activation than young. In conclusion, the age-related decrease in head stability could be attributed to an impaired ability to attenuate accelerations from trunk to head along with delayed onset of neck muscles activation.</description><subject>Acceleration</subject><subject>Adult</subject><subject>Aged</subject><subject>Aging - physiology</subject><subject>Balance</subject><subject>Biomechanical Phenomena</subject><subject>Electromyography</subject><subject>Fall risk</subject><subject>Female</subject><subject>Gait</subject><subject>Head Movements</subject><subject>Humans</subject><subject>Male</subject><subject>Movement variability</subject><subject>Muscle, Skeletal - growth & development</subject><subject>Muscle, Skeletal - physiology</subject><subject>Postural Balance</subject><issn>1050-6411</issn><issn>1873-5711</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2018</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNqFkEtP3DAQgK2qFa_yE1r5yCXBE2_shEuFEC8J1Et7trz2BGab2GAnrfbf12i3XHuakeab18fYFxA1CFDnm3qDI_6iUDcCdA1QCxAf2BF0WlatBvhYctGKSq0ADtlxzhtRQNGJA3bY9NC3ILsjRo_onm2gPGUeB_6M1vM82zWNNG-5XxKFJ_5kaeYUaCY7Uwwl5du4lIINnsfRY-J_4oThgl_ygEuK1bSb6uxYGDtuM-XP7NNgx4yn-3jCft5c_7i6qx6-395fXT5UbgXNXE7Xsh08NjhorZXQg-yUdijAteidVCitV4Ne9z34UlmtZdf0XlkhpPYrK0_Y2W7uS4qvC-bZTJQdjqMNGJdsoNeg-q4BVdB2h7oUc044mJdEk01bA8K8WTYbs7ds3iwbAFMsl76v-xXLekL_3vVPawG-7QAsj_4mTCY7wuDQU0I3Gx_pPyv-ArLDkXI</recordid><startdate>201802</startdate><enddate>201802</enddate><creator>Maslivec, A.</creator><creator>Bampouras, T.M.</creator><creator>Dewhurst, S.</creator><creator>Vannozzi, G.</creator><creator>Macaluso, A.</creator><creator>Laudani, L.</creator><general>Elsevier Ltd</general><scope>6I.</scope><scope>AAFTH</scope><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7X8</scope></search><sort><creationdate>201802</creationdate><title>Mechanisms of head stability during gait initiation in young and older women: A neuro-mechanical analysis</title><author>Maslivec, A. ; Bampouras, T.M. ; Dewhurst, S. ; Vannozzi, G. ; Macaluso, A. ; Laudani, L.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c412t-57735fde2ef777607f3867ce01c5edc36e3ad6f7b991d8674b3829d6a0037d4a3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2018</creationdate><topic>Acceleration</topic><topic>Adult</topic><topic>Aged</topic><topic>Aging - physiology</topic><topic>Balance</topic><topic>Biomechanical Phenomena</topic><topic>Electromyography</topic><topic>Fall risk</topic><topic>Female</topic><topic>Gait</topic><topic>Head Movements</topic><topic>Humans</topic><topic>Male</topic><topic>Movement variability</topic><topic>Muscle, Skeletal - growth & development</topic><topic>Muscle, Skeletal - physiology</topic><topic>Postural Balance</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Maslivec, A.</creatorcontrib><creatorcontrib>Bampouras, T.M.</creatorcontrib><creatorcontrib>Dewhurst, S.</creatorcontrib><creatorcontrib>Vannozzi, G.</creatorcontrib><creatorcontrib>Macaluso, A.</creatorcontrib><creatorcontrib>Laudani, L.</creatorcontrib><collection>ScienceDirect Open Access Titles</collection><collection>Elsevier:ScienceDirect:Open Access</collection><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>MEDLINE - Academic</collection><jtitle>Journal of electromyography and kinesiology</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Maslivec, A.</au><au>Bampouras, T.M.</au><au>Dewhurst, S.</au><au>Vannozzi, G.</au><au>Macaluso, A.</au><au>Laudani, L.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Mechanisms of head stability during gait initiation in young and older women: A neuro-mechanical analysis</atitle><jtitle>Journal of electromyography and kinesiology</jtitle><addtitle>J Electromyogr Kinesiol</addtitle><date>2018-02</date><risdate>2018</risdate><volume>38</volume><spage>103</spage><epage>110</epage><pages>103-110</pages><issn>1050-6411</issn><eissn>1873-5711</eissn><abstract>Decreased head stability has been reported in older women during locomotor transitions such as the initiation of gait. The aim of the study was to investigate the neuro-mechanical mechanisms underpinning head stabilisation in young and older women during gait initiation. Eleven young (23.1 ± 1.1 yrs) and 12 older (73.9 ± 2.4 yrs) women initiated walking at comfortable speed while focussing on a fixed visual target at eye level. A stereophotogrammetric system was used to assess variability of angular displacement and RMS acceleration of the pelvis, trunk and head, and dynamic stability in the anteroposterior and mediolateral directions. Latency of muscle activation in the sternocleidomastoid, and upper and lower trunk muscles were determined by surface electromyography. Older displayed higher variability of head angular displacement, and a decreased ability to attenuate accelerations from trunk to head, compared to young in the anteroposterior but not mediolateral direction. Moreover, older displayed a delayed onset of sternocleidomastoid activation than young. 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| subjects | Acceleration Adult Aged Aging - physiology Balance Biomechanical Phenomena Electromyography Fall risk Female Gait Head Movements Humans Male Movement variability Muscle, Skeletal - growth & development Muscle, Skeletal - physiology Postural Balance |
| title | Mechanisms of head stability during gait initiation in young and older women: A neuro-mechanical analysis |
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