Mechanisms of head stability during gait initiation in young and older women: a neuro-mechanical analysis
MetadataShow full item record
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.
Journal of Electromyography and Kinesiology;
Maslivec, A., Bampouras, T., Dewhurst, S., Vannozzi, G., Macaluso, A. and Laudani, L. (2018) 'Mechanisms of head stability during gait initiation in young and older women: a neuro-mechanical analysis', 38, pp.103-110
This article was published in Journal of Electromyography and Kinesiology on 23 November 2018, available open access at https://doi.org/10.1016/j.jelekin.2017.11.010
- Export 
Showing items related by title, author, subject and abstract.
Mair, J.L.; Laudani, Luca; Vannozzi, G.; De Vito, G.; Boreham, C.; Macaluso, A. (Springer, 2014-05)Purpose = An understanding of the neuromechanical responses to bench stepping with external loading is important for exercise prescription, especially in older women who are more at risk than men for disability. This study ...
Rum, Lorenzo; Laudani, Luca; Macaluso, Andrea; Vannozzi, Giuseppe (Elsevier, 2017-10-25)Transitory tasks, such as gait termination, involve interactions between neural and biomechanical factors that challenge postural stability and head stabilization patterns in older adults. The aim of the study was to compare ...
Age‐related changes to cardiac systolic and diastolic function during whole‐body passive hyperthermia Lucas, Rebekah; Sarma, Satyam; Schadler, Zachary; Pearson, James; Crandall, Craig (Wiley, 2015-01-15)The effect of ageing on hyperthermia‐induced changes in cardiac function is unknown. This study tested the hypothesis that hyperthermia‐induced changes in left ventricular systolic and diastolic function are attenuated in ...