Continuous Analysis of Marathon Running Using Inertial Sensors: Hitting Two Walls?
| Autor: | Frédéric Meyer, Grégoire P. Millet, Kamiar Aminian, Mathieu Falbriard, Benoit Mariani |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Inertial frame of reference
Foot Continuous monitoring Biomechanics Monitoring Ambulatory Stiffness Marathon Running Physical Therapy Sports Therapy and Rehabilitation 030229 sport sciences Swing Geodesy Barefoot Wearable Electronic Devices 03 medical and health sciences 0302 clinical medicine Inertial measurement unit Duty cycle medicine Humans Orthopedics and Sports Medicine medicine.symptom Gait 030217 neurology & neurosurgery Geology |
| Zdroj: | International Journal of Sports Medicine. 42:1182-1190 |
| ISSN: | 1439-3964 0172-4622 |
| DOI: | 10.1055/a-1432-2336 |
| Popis: | Marathon running involves complex mechanisms that cannot be measured with objective metrics or laboratory equipment. The emergence of wearable sensors introduced new opportunities, allowing the continuous recording of relevant parameters. The present study aimed to assess the evolution of stride-by-stride spatio-temporal parameters, stiffness, and foot strike angle during a marathon and determine possible abrupt changes in running patterns. Twelve recreational runners were equipped with a Global Navigation Satellite System watch, and two inertial measurement units clamped on each foot during a marathon race. Data were split into eight 5-km sections and only level parts were analyzed. We observed gradual increases in contact time and duty factor as well as decreases in flight time, swing time, stride length, speed, maximal vertical force and stiffness during the race. Surprisingly, the average foot strike angle decreased during the race, but each participant maintained a rearfoot strike until the end. Two abrupt changes were also detected around km 25 and km 35. These two breaks are possibly due to the alteration of the stretch-shortening cycle combined with physiological limits. This study highlights new measurable phenomena that can only be analyzed through continuous monitoring of runners over a long period of time. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|