Now showing 1 - 7 of 7
  • 2015Journal Article
    [["dc.bibliographiccitation.firstpage","715"],["dc.bibliographiccitation.issue","5"],["dc.bibliographiccitation.journal","Manual Therapy"],["dc.bibliographiccitation.lastpage","722"],["dc.bibliographiccitation.volume","20"],["dc.contributor.author","Dieterich, A."],["dc.contributor.author","Petzke, Frank"],["dc.contributor.author","Pickard, C."],["dc.contributor.author","Davey, Paul"],["dc.contributor.author","Falla, Deborah"],["dc.date.accessioned","2018-11-07T09:51:11Z"],["dc.date.available","2018-11-07T09:51:11Z"],["dc.date.issued","2015"],["dc.description.abstract","Background: Knowledge on task-specific activity of the deep hip abductor muscles is limited and is required for determining appropriate hip abductor exercises. Objectives: To assess the temporal differentiation of activity of gluteus minimus and the deep and the superficial regions of gluteus medius during weight bearing and non-weight bearing exercises. Design: Repeated measures design on a single recording occasion. Method: M-mode ultrasound was used to capture activity-related muscle motion of the gluteus minimus and medius muscles in 20 healthy volunteers during weight shift, hip hitch, side-lying abduction and active leg lengthening exercises. M-mode traces were computer-processed for detecting muscle motion onsets. Mean onset differences between muscle regions and their intra-individual variability were assessed. Results: In contrast to side-lying abduction, the weight shift and hip hitch exercises resulted in larger onset variability between the gluteus minimus and deep gluteus medius (P < 0.001) and also between the deep and superficial regions of the gluteus medius (P < 0.05). Conclusions: Weight bearing exercises promoted a greater functional differentiation between deep and superficial hip abductor muscles. (C) 2015 Elsevier Ltd. All rights reserved."],["dc.identifier.doi","10.1016/j.math.2015.01.006"],["dc.identifier.isi","000361773900012"],["dc.identifier.pmid","25697631"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/35860"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.relation.issn","1532-2769"],["dc.relation.issn","1356-689X"],["dc.title","Differentiation of gluteus medius and minimus activity in weight bearing and non-weight bearing exercises by M-mode ultrasound imaging"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dspace.entity.type","Publication"]]
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  • 2017Journal Article
    [["dc.bibliographiccitation.firstpage","268"],["dc.bibliographiccitation.issue","4"],["dc.bibliographiccitation.journal","Journal of Orthopaedic and Sports Physical Therapy"],["dc.bibliographiccitation.lastpage","277"],["dc.bibliographiccitation.volume","47"],["dc.contributor.author","Falla, Deborah"],["dc.contributor.author","Gizzi, Leonardo"],["dc.contributor.author","Parsa, Hesam"],["dc.contributor.author","Dieterich, Angela V."],["dc.contributor.author","Petzke, Frank"],["dc.date.accessioned","2018-11-07T10:25:46Z"],["dc.date.available","2018-11-07T10:25:46Z"],["dc.date.issued","2017"],["dc.description.abstract","STUDY DESIGN: Controlled laboratory study, case-control design. OBJECTIVE: To evaluate spine kinematics and gait characteristics in people with nonspecific chronic neck pain. BACKGROUND: People with chronic neck pain present with a number of sensorimotor and biomechanical alterations, yet little is known about the influence of neck pain on gait and motions of the spine during gait. METHODS: People with chronic nonspecific neck pain and age- and sex-matched asymptomatic controls walked on a treadmill at 3 different speeds (self-selected, 3 km/h, and 5 km/h), either with their head in a neutral position or rotated 30. Tridimensional motion capture was employed to quantify body kinematics. Neck and trunk rotations were derived from the difference between the transverse plane component of the head and thorax and thorax and pelvis angles to provide an indication of neck and trunk rotation during gait. RESULTS: Overall, the patient group showed shorter stride length compared to the control group (P<.001). Moreover, the patients with neck pain showed smaller trunk rotations (P<.001), regardless of the condition or speed. The difference in the amount of trunk rotation between groups became larger for the conditions of walking with the head rotated. CONCLUSION: People with chronic neck pain walk with reduced trunk rotation, especially when challenged by walking with their head positioned in rotation. Reduced rotation of the trunk during gait may have long-term consequences on spinal health."],["dc.identifier.doi","10.2519/jospt.2017.6768"],["dc.identifier.isi","000398334200007"],["dc.identifier.pmid","28158961"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/42920"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","PUB_WoS_Import"],["dc.publisher","J O S P T"],["dc.relation.issn","1938-1344"],["dc.relation.issn","0190-6011"],["dc.title","People With Chronic Neck Pain. Walk With a Stiffer Spine"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]
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  • 2017Journal Article
    [["dc.bibliographiccitation.artnumber","42011"],["dc.bibliographiccitation.journal","Scientific Reports"],["dc.bibliographiccitation.volume","7"],["dc.contributor.author","Dieterich, Angela V."],["dc.contributor.author","Botter, Alberto"],["dc.contributor.author","Vieira, Taian Martins"],["dc.contributor.author","Peolsson, Anneli"],["dc.contributor.author","Petzke, Frank"],["dc.contributor.author","Davey, Paul"],["dc.contributor.author","Falla, Deborah"],["dc.date.accessioned","2018-11-07T10:27:32Z"],["dc.date.available","2018-11-07T10:27:32Z"],["dc.date.issued","2017"],["dc.description.abstract","Delayed onset of muscle activation can be a descriptor of impaired motor control. Activation onset can be estimated from electromyography (EMG)-registered muscle excitation and from ultrasound-registered muscle motion, which enables non-invasive measurements in deep muscles. However, in voluntary activation, EMG-and ultrasound-detected activation onsets may not correspond. To evaluate this, ten healthy men performed isometric elbow flexion at 20% to 70% of their maximal force. Utilising a multi-channel electrode transparent to ultrasound, EMG and M(otion)-mode ultrasound were recorded simultaneously over the biceps brachii muscle. The time intervals between automated and visually estimated activation onsets were correlated with the regional variation of EMG and muscle motion onset, contraction level and speed. Automated and visual onsets indicated variable time intervals between EMG-and motion onset, median (interquartile range) 96 (121) ms and 48 (72) ms, respectively. In 17% (computed analysis) or 23% (visual analysis) of trials, motion onset was detected before local EMG onset. Multi-channel EMG and M-mode ultrasound revealed regional differences in activation onset, which decreased with higher contraction speed (Spearman rho >= 0.45, P < 0.001). In voluntary activation the heterogeneous motor unit recruitment together with immediate motion transmission may explain the high variation of the time intervals between local EMG-and ultrasound-detected activation onset."],["dc.description.sponsorship","Open-Access-Publikationsfonds 2017"],["dc.identifier.doi","10.1038/srep42011"],["dc.identifier.isi","000393550900001"],["dc.identifier.pmid","28176821"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/14273"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/43250"],["dc.notes.intern","Merged from goescholar"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","PUB_WoS_Import"],["dc.publisher","Nature Publishing Group"],["dc.relation.issn","2045-2322"],["dc.rights","CC BY 4.0"],["dc.rights.uri","https://creativecommons.org/licenses/by/4.0"],["dc.title","Spatial variation and inconsistency between estimates of onset of muscle activation from EMG and ultrasound"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]
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  • 2015Journal Article
    [["dc.bibliographiccitation.firstpage","694"],["dc.bibliographiccitation.issue","5"],["dc.bibliographiccitation.journal","Manual Therapy"],["dc.bibliographiccitation.lastpage","702"],["dc.bibliographiccitation.volume","20"],["dc.contributor.author","Schomacher, Jochen"],["dc.contributor.author","Erlenwein, Joachim"],["dc.contributor.author","Dieterich, Angela V."],["dc.contributor.author","Petzke, Frank"],["dc.contributor.author","Falla, Deborah"],["dc.date.accessioned","2018-11-07T09:51:11Z"],["dc.date.available","2018-11-07T09:51:11Z"],["dc.date.issued","2015"],["dc.description.abstract","The deep cervical extensor, semispinalis cervicis, displays changes in behaviour and structure in people with chronic neck pain yet there is limited knowledge on how activation of this muscle can be emphasized during training. Using intramuscular electromyography (EMG), this study investigated the activity of the deep semispinalis cervicis and the superficial splenius capitis muscle at two spinal levels (C2 and C5) in ten healthy volunteers during a series of neck exercises: I. Traction and compression, 2. Resistance applied in either flexion or extension at the occiput, at the level of the vertebral arch of Cl and of C4, and 3. Maintaining the neck in neutral while inclined on the elbows, with and without resistance at C4. The ratio between semispinalis cervicis and the splenius capitis EMG amplitude was quantified as an indication of whether the exercise could emphasize the activation of the semispinalis cervicis muscle relative to the splenius capitis. Manual resistance applied in extension over the vertebral arch emphasized the activation of the semispinalis cervicis relative to the splenius capitis at the spinal level directly caudal to the site of resistance (ratio: 2.0 +/- 1.1 measured at C5 with resistance at C4 and 2.1 +/- 1.2 measured at C2 with resistance at Cl). This study confirmed the possibility of emphasizing the activation of the semispinalis cervicis relative to the splenius capitis which may be relevant for targeted exercise interventions for this deep extensor muscle. Further studies are required to investigate the clinical efficacy of these exercises for people with neck pain. (C) 2015 Elsevier Ltd. All rights reserved."],["dc.identifier.doi","10.1016/j.math.2015.04.010"],["dc.identifier.isi","000361773900009"],["dc.identifier.pmid","25935795"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/35859"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Churchill Livingstone"],["dc.relation.issn","1532-2769"],["dc.relation.issn","1356-689X"],["dc.title","Can neck exercises enhance the activation of the semispinalis cervicis relative to the splenius capitis at specific spinal levels?"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]
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  • 2020Journal Article
    [["dc.bibliographiccitation.firstpage","179"],["dc.bibliographiccitation.issue","4"],["dc.bibliographiccitation.journal","Journal of Orthopaedic and Sports Physical Therapy"],["dc.bibliographiccitation.lastpage","188"],["dc.bibliographiccitation.volume","50"],["dc.contributor.author","Dieterich, Angela V."],["dc.contributor.author","Yavuz, Utku Şükrü"],["dc.contributor.author","Petzke, Frank"],["dc.contributor.author","Nordez, Antoine"],["dc.contributor.author","Falla, Deborah"],["dc.date.accessioned","2021-04-14T08:26:27Z"],["dc.date.available","2021-04-14T08:26:27Z"],["dc.date.issued","2020"],["dc.identifier.doi","10.2519/jospt.2020.8821"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/81952"],["dc.language.iso","en"],["dc.notes.intern","DOI Import GROB-399"],["dc.relation.eissn","1938-1344"],["dc.relation.issn","0190-6011"],["dc.title","Neck Muscle Stiffness Measured With Shear Wave Elastography in Women With Chronic Nonspecific Neck Pain"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]
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  • 2018Journal Article
    [["dc.bibliographiccitation.artnumber","e0206514"],["dc.bibliographiccitation.issue","11"],["dc.bibliographiccitation.journal","PlOS ONE"],["dc.bibliographiccitation.volume","13"],["dc.contributor.author","Crawford, Rebecca"],["dc.contributor.author","Gizzi, Leonardo"],["dc.contributor.author","Dieterich, Angela"],["dc.contributor.author","Ni Mhuiris, Áine"],["dc.contributor.author","Falla, Deborah"],["dc.date.accessioned","2019-07-09T11:50:17Z"],["dc.date.available","2019-07-09T11:50:17Z"],["dc.date.issued","2018"],["dc.description.abstract","The influence of age on spinal muscle activation patterns and its relation to kinematics is poorly understood. We aimed at understanding age-related changes to spine and trunk muscle activity in addition to spinal and lower limb kinematics during treadmill walking under various conditions. An observational study was conducted evaluating asymptomatic young (n = 10; 3F, 7M; 26.3±2.5yrs) and older (n = 9; 3F, 6M; 67.1±4.2yrs) adults' treadmill walking at 2km/h and 4km/h, each at 0, 1, 5, and 10% inclination. Unilateral (right side) electromyography (EMG) was recorded from deep and superficial multifidus (intramuscular) and erector spinae and abdominal obliques (surface); trunk and leg kinematics were also measured. Muscle activity was characterised by peak amplitude and duration of activity, and the time-point of peak amplitude in the gait cycle (0-100%). Peak activation in older adults was lower for the superficial multifidus (p<0.0001) and higher for the thoracolumbar (p<0.001) and lumbar erector spinae (p<0.01). The duration of activation was longer in older adults for all muscles (p<0.05) except the superficial multifidus, and longer during faster walking for all participants. The time-point of peak amplitude in the gait cycle was earlier in older participants for the external obliques (p<0.05). Walking speed appeared to influence muscle activity more than inclination. Older adults used less spine, trunk and lower limb motion, except at the ankle. Age-related differences within multifidus and between paravertebral and trunk muscles were inconsistent. Walking at 4km/h at 5-10% inclination may specifically target the lumbar paravertebral muscles."],["dc.identifier.doi","10.1371/journal.pone.0206514"],["dc.identifier.pmid","30408111"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/15902"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/59739"],["dc.language.iso","en"],["dc.notes.intern","Merged from goescholar"],["dc.relation.issn","1932-6203"],["dc.rights","CC BY 4.0"],["dc.rights.uri","https://creativecommons.org/licenses/by/4.0"],["dc.subject.ddc","610"],["dc.title","Age-related changes in trunk muscle activity and spinal and lower limb kinematics during gait"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]
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  • 2017Journal Article
    [["dc.bibliographiccitation.firstpage","171"],["dc.bibliographiccitation.issue","1"],["dc.bibliographiccitation.journal","European Journal of Applied Physiology"],["dc.bibliographiccitation.lastpage","178"],["dc.bibliographiccitation.volume","117"],["dc.contributor.author","Dieterich, Angela V."],["dc.contributor.author","Andrade, Ricardo J."],["dc.contributor.author","Le Sant, Guillaume"],["dc.contributor.author","Falla, Deborah"],["dc.contributor.author","Petzke, Frank"],["dc.contributor.author","Hug, Francois"],["dc.contributor.author","Nordez, Antoine"],["dc.date.accessioned","2018-11-07T10:29:04Z"],["dc.date.available","2018-11-07T10:29:04Z"],["dc.date.issued","2017"],["dc.description.abstract","The neck extensor muscles contribute to spinal support and posture while performing head and neck motion. Muscle stiffness relates to passive elasticity (support) and active tensioning (posture and movement) of muscle. It was hypothesized that support and motion requirements are reflected in the distribution of stiffness between superficial and deep neck extensor muscles. In ten healthy participants, shear modulus (stiffness) of five neck extensor muscles was determined in prone at rest and during isometric head lift at three intensities using shear wave elastography. Shear modulus differed between muscles (P < 0.001), and was larger for the deeper muscles: (median (interquartile range)) trapezius 7.7 kPa (4.4), splenius capitis 6.5 kPa (2.5), semispinalis capitis 8.9 kPa (2.8), semispinalis cervicis 9.5 kPa (2.5), multifidus 14.9 kPa (1.4). Shear modulus differed between the resting condition and head lift (P < 0.001) but not between levels of head lift intensity. Shear wave elastography revealed highest passive and active stiffness of the deep neck extensor muscles most close to the spine. The highest active increase of stiffness during the head lift was found in the semispinalis cervicis muscle. The non-invasive, clinically applicable estimates of muscle stiffness have potential for the assessment of muscular changes associated with neck pain/injury."],["dc.identifier.doi","10.1007/s00421-016-3509-5"],["dc.identifier.isi","000394313300017"],["dc.identifier.pmid","27913924"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/43562"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","PUB_WoS_Import"],["dc.publisher","Springer"],["dc.relation.issn","1439-6327"],["dc.relation.issn","1439-6319"],["dc.title","Shear wave elastography reveals different degrees of passive and active stiffness of the neck extensor muscles"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]
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