Neuromechanics of repeated stepping with external loading in young and older women
De Vito, G.
MetadataShow full item record
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 was designed to describe and compare such responses to repeated bench stepping with external loading between young and older women. Methods = Eight young (25 ± 2.7 years) and nine older (70 ± 3.3 years) medically stable women performed repeated stepping on a bench of either 20 or 25 cm either unloaded or with 2.5, 5, 7.5 or 10 % of body mass (BM) incorporated into a weighted vest. Ground reaction forces, peak power output and agonist–antagonist neuromuscular activation around the knee joint were evaluated. Results = Peak power output was 44 % lower in the older than in the younger women. At a step height of 25 cm, peak power (PP) in the young women was 7 % greater with an external load of 7.5 % body mass compared with no loading, while in the older women there was a tendency for PP to be higher with an external load of 2.5 % body mass. Neuromuscular activation of the vastus lateralis muscle was 60 % higher in the older than in the young women. Conclusions = Older women performed repeated weighted-vest stepping with lower power output but greater knee muscle activation compared to younger counterparts. Peak power output during stepping may be achieved at 7.5 % BM loading in young women and either 2.5 or 10 % BM in older women, depending on desired step height.
European Journal of Applied Physiology;
Mair, J.L., Laudani, L., Vannozzi, G., De Vito, G., Boreham, C. and Macaluso, A. (2014) 'Neuromechanics of repeated stepping with external loading in young and older women', European Journal of Applied Physiology, 114(5), pp.983-994
Article published in European Journal of Applied Physiology available at https://doi.org/10.1007/s00421-014-2826-9
- Sport Research Groups 
Showing items related by title, author, subject and abstract.
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 ...
Older Age Is Associated with Lower Optimal Vibration Frequency in Lower-Limb Muscles During Whole-Body Vibration Carlucci, F.; Orlando, G.; Haxhi, J.; Laudani, Luca; Giombini, A.; Macaluso, A.; Pigozzi, F.; Sacchetti, M. (2015-07)Objective = The aim of this study was to compare the optimal vibration frequency (OVF), which corresponds to maximal electromyographic muscle response during whole-body vibration, between young, middle-aged, and older ...
Mechanisms of head stability during gait initiation in young and older women: a neuro-mechanical analysis Maslivec, Amy; Dewhurst, Susan; Vannozzi, Giuseppe; Macaluso, Andrea; Laudani, Luca (Elsevier, 2017-11-23)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 ...