Increasing cadence with a metronome and running barefoot changes the sagittal kinematics of the lower limbs and trunk

Molina-Molina, Alejandro, Delgado-García, Gabriel, Richards, James orcid iconORCID: 0000-0002-4004-3115, Mercado-Palomino, Elia, Manuel Soto-Hermoso, Víctor and Ángel Latorre-Román, Pedro (2024) Increasing cadence with a metronome and running barefoot changes the sagittal kinematics of the lower limbs and trunk. Journal of Sports Sciences . ISSN 0264-0414

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Abstract

The purpose was to compare two non-laboratory based running retraining programs on lower limb and trunk kinematics in recreational runners. Seventy recreational runners (30 ± 7.3 years old, 40% female) were randomised to a barefoot running group (BAR), a group wearing a digital metronome with their basal cadence increased by 10% (CAD), and a control group (CON). BAR and CAD groups included intervals from 15 to 40 minutes over 10 weeks and 3 days/week. 3D sagittal kinematics of the ankle, knee, hip, pelvis, and trunk were measured before and after the retraining program, at comfortable and high speeds. A 3 × 2 mixed ANOVA revealed that BAR and CAD groups increased knee and hip flexion at footstrike, increased peak hip flexion during stance and flight phase, decreased peak hip extension during flight phase, and increased anterior pelvic tilt at both speeds after retraining. In addition, BAR increased ankle plantar flexion at footstrike and increased anterior trunk tilt. Both retraining programs demonstrated significant moderate to large effect size changes in parameters that could reduce the mechanical risks of injury associated with excessive knee stress, which is of interest to coaches, runners and those prescribing rehabilitation and injury prevention programs.


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