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Tibial impacts and muscle activation during walking, jogging and running when performed overground, and on motorised and non-motorised treadmills

Montgomery, G.; Abt, G.; Dobson, C.; Smith, T.; Ditroilo, M.

Authors

G. Montgomery

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Dr Grant Abt G.Abt@hull.ac.uk
Reader in Sport and Exercise Physiology and Head of Department for Sport, Health and Exercise Science

T. Smith

M. Ditroilo

Abstract

Purpose To examine tibial acceleration and muscle activation during overground (OG), motorised treadmill (MT) and non-motorised treadmill conditions (NMT) when walking, jogging and running at matched velocities. Methods An accelerometer recorded acceleration at the mid-tibia and surface EMG electrodes recorded rectus femoris (RF), semitendinosus (ST), tibialis anterior (TA) and soleus (SL) muscle activation during OG, MT and NMT locomotion whilst walking, jogging and running. Results The NMT produced large reductions in tibial acceleration when compared with OG and MT conditions across walking, jogging and running conditions. RF EMG was small-moderately higher in the NMT condition when compared with the OG and MT conditions across walking, jogging and running conditions. ST EMG showed large and very large increases in the NMT when compared to OG and MT conditions during walking whilst SL EMG found large increases on the NMT when compared to OG and MT conditions during running. The NMT condition generated very large increases in step frequency when compared to OG and MT conditions during walking, with large and very large decreases during jogging and very large decreases during running. Conclusions The NMT generates large reductions in tibial acceleration, moderate to very large increases in muscular activation and large to very large decreases in cycle time when compared to OG and MT locomotion. Whilst this may decrease the osteogenic potential of NMT locomotion, there may be uses for NMTs during rehabilitation for lower limb injuries.

Publication Date 2016-09
Journal Gait & posture
Print ISSN 0966-6362
Electronic ISSN 1879-2219
Publisher Elsevier
Peer Reviewed Peer Reviewed
Volume 49
Pages 120-126
Institution Citation Montgomery, G., Abt, G., Dobson, C., Smith, T., & Ditroilo, M. (2016). Tibial impacts and muscle activation during walking, jogging and running when performed overground, and on motorised and non-motorised treadmills. Gait and Posture, 49, 120-126. https://doi.org/10.1016/j.gaitpost.2016.06.037
DOI https://doi.org/10.1016/j.gaitpost.2016.06.037
Keywords Biophysics; Rehabilitation; Orthopedics and Sports Medicine
Publisher URL http://www.sciencedirect.com/science/article/pii/S0966636216301163
Additional Information Authors' accepted manuscript of article published in: Gait & posture 2016, v.49.

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