Effect of neutral-cushioned running shoes on plantar pressure loading and comfort in athletes with cavus feet: a crossover randomized controlled trial.
BACKGROUND
High injury rates observed in athletes with cavus feet are thought to be associated with elevated plantar pressure loading. Neutral-cushioned running shoes are often recommended to manage and prevent such injuries.


OBJECTIVE
To investigate in-shoe plantar pressure loading and comfort during running in 2 popular neutral-cushioned running shoes recommended for athletes with cavus feet.


METHODS
Controlled laboratory study.


METHODS
Plantar pressures were collected using the in-shoe Novel Pedar-X system during overground running in 22 athletes with cavus feet in 2 neutral-cushioned running shoes (Asics Nimbus 6 and Brooks Glycerin 3) and a control condition (Dunlop Volley). Comfort was measured using a validated visual analog scale.


RESULTS
Compared with the control, both neutral-cushioned running shoes significantly reduced peak pressure and pressure-time integrals by 17% to 33% (P < .001). The Brooks Glycerin most effectively reduced pressure beneath the whole foot and forefoot (P < .01), and the Asics Nimbus most effectively reduced rearfoot pressure (P <.01). Both neutral-cushioned running shoes reduced force at the forefoot by 6% and increased it at the midfoot by 12% to 17% (P < .05). Contact time and area increased in both neutral-cushioned running shoes (P < .01). The Asics Nimbus was the most comfortable, although both neutral-cushioned running shoes were significantly more comfortable than the control (P < .001).


CONCLUSIONS
Two popular types of neutral-cushioned running shoes were effective at reducing plantar pressures in athletes with cavus feet.


CONCLUSIONS
Regional differences in pressure reduction suggest neutral-cushioned running shoe recommendation should shift from being categorical in nature to being based on location of injury or elevated plantar pressure.
Wegener
Caleb
C
Podiatry Program, School of Biomedical and Health Sciences, University of Western Sydney, Sydney, NSW, Australia. Caleb.Wegener@swahs.health.nsw.gov.au
Burns
Joshua
J
Penkala
Stefania
S
D001265:Athletic Injuries / Q000517:prevention & control; D001696:Biomechanical Phenomena; D005260:Female; D005528:Foot / Q000502:physiology*; D005530:Foot Deformities; D018409:Foot Injuries / Q000517:prevention & control; D015775:Fractures, Stress / Q000517:prevention & control; D006801:Humans; D008297:Male; D009989:Orthotic Devices; D010146:Pain / Q000517:prevention & control; D011312:Pressure; D012420:Running / Q000293:injuries; D012775:Shoes