Effect of Orthoses on Changes in Neuromuscular Control and Aerobic Cost of a 1 hour Run

Griff · Nov 18, 2011

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Effect of Orthoses on Changes in Neuromuscular Control and Aerobic Cost of a 1-h Run
KELLY, LUKE A.; GIRARD, OLIVIER; RACINAIS, SEBASTIEN
Medicine & Science in Sports & Exercise: December 2011 - Volume 43 - Issue 12 - p 2335–2343

Abstract
Purpose: The study’s purpose was to determine the effect of foot orthoses on neuromuscular control and the aerobic cost of running.

Methods: Twelve recreational athletes ran for 1 h on a treadmill at a constant velocity (i.e., 10% higher than their first ventilatory threshold) with and without custom-molded foot orthoses, in a counterbalanced order. Surface EMG activity of five lower limb muscles, together with oxygen consumption and HR, was recorded at 8-min intervals, starting after 2 min, during the run. A series of neuromuscular tests including voluntary and electrically evoked contractions of the ankle plantar flexors was performed before and after running.

Results: Peroneus longus root mean square amplitude decreased with time, independently of the condition (−18.9%, P < 0.01). Lower root mean square signal amplitude for vastus medialis (−13.3%, P < 0.02) and gastrocnemius medialis (−10.7%, P < 0.05), combined with increased peroneus longus burst duration (+14.7%, P < 0.05), occurred when running with orthoses. There was no main effect of the condition for oxygen consumption (P > 0.05), whereas HR was significantly lowered while wearing foot orthoses (−3%, P < 0.02). Maximal strength capacity (−9%, P < 0.01), normalized EMG activity (−17%, P < 0.001), and peak twitch torque (−14%, P < 0.01) declined from before to after exercise, independently of the condition. Smaller fatigue-induced decrements in the rate of torque development within the first 200 ms (−6% vs −33%, P < 0.01) were reported after running with foot orthoses.

Conclusions: Wearing foot orthoses alters neuromuscular control during a submaximal 1-h treadmill run and partly protects from the resulting fatigue-induced reductions in rapid force development characteristics of the plantar flexors. However, these changes may be too small to alter the aerobic cost of running.
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Nice work Luke - any chance of a copy?

Athol Thomson · Nov 18, 2011

Luke Kelly you are on fire mate!

Well done on getting another paper published.

Would love a copy too please if possible?

All the best,
Athol

Effect of Orthoses on Changes in Neuromuscular Control and Aerobic Cost of a 1 hour Run

Griff Moderator

Athol Thomson Active Member

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Effect of Orthoses on Changes in Neuromuscular Control and Aerobic Cost of a 1 hour Run

Griff Moderator

Athol Thomson Active Member

Effect by custom-made foot orthoses with added support under the first metatarsophalangeal joint

Effect of foot type and foot orthoses on gluteus medius muscle activity

Exciting New Research on Effect of Foot Orthoses on Brain Wave Patterns Updated

Effectiveness of Foot Orthoses Versus Corticosteroid Injection for Plantar Heel Pain

how does strapping replicate the effect a foot orthoses will have?

Predictors of the Biomechanical Effects of Foot Orthoses

The Immediate Effect of Foot Orthoses on Subtalar Joint Mechanics and Energetics

Share This Page

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