Interaction Effects of Stride Angle and Strike Pattern on Running Economy
| Autor: | Jordan Santos-Concejero, Iraia Bidaurrazaga-Letona, Susana María Gil, Jon Irazusta, Jon Zabala-Lili, Nicholas Tam, Cristina Granados |
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| Rok vydání: | 2014 |
| Předmět: |
Adult
Male medicine.medical_specialty Anaerobic Threshold Foot Forefoot Lactate threshold Biomechanics STRIDE Physical Therapy Sports Therapy and Rehabilitation Swing Interaction Biomechanical Phenomena Running Physical medicine and rehabilitation Running economy Physical therapy medicine Humans Orthopedics and Sports Medicine Treadmill Gait Mathematics |
| Zdroj: | International Journal of Sports Medicine. 35:1118-1123 |
| ISSN: | 1439-3964 0172-4622 |
| DOI: | 10.1055/s-0034-1372640 |
| Popis: | This study aimed to investigate the relationship between stride angle and running economy (RE) in athletes with different foot strike patterns. 30 male runners completed 4 min running stages on a treadmill at different velocities. During the test, biomechanical variables such as stride angle, swing time, contact time, stride length and frequency were recorded using an optical measurement system. Their foot strike pattern was determined, and VO2 at velocities below the lactate threshold were measured to calculate RE. Midfoot/forefoot strikers had better RE than rearfoot strikers (201.5±5.6 ml · kg(-1) · km(-1) vs. 213.5±4.2 ml · kg(-1) · km(-1)respectively; p=0.019). Additionally, midfoot/fore-foot strikers presented higher stride angles than rearfoot strikers (p=0.043). Linear modelling analysis showed that stride angle is closely related to RE (r=0.62, p0.001) and that the effect of stride angle on RE was different in the 2 groups. From an arbitrary value of 4°, a rearfoot strike pattern is likely to be more economical, whereas at any lower degree, the midfoot/forefoot strike pattern appears to be more desirable. A biomechanical running technique characterised by high stride angles and a midfoot/forefoot strike pattern is advantageous for a better RE. Athletes may find stride angle useful for improving RE. |
| Databáze: | OpenAIRE |
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