Assessing spring-mass similarity in elite and recreational runners

The dynamic complexity and individualization of running biomechanics has challenged the development of objective and comparative gait measures. Here, we present and explore several novel biomechanical metrics for running that are informed by a canonical inter-species gait template–the spring-mass mo...

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Main Authors: Geoffrey T. Burns, Nicholas Tam, Jordan Santos-Concejero, Ross Tucker, Ronald F. Zernicke
Format: Article
Language:English
Published: Frontiers Media S.A. 2023-09-01
Series:Frontiers in Physiology
Subjects:
Online Access:https://www.frontiersin.org/articles/10.3389/fphys.2023.1224459/full
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author Geoffrey T. Burns
Nicholas Tam
Nicholas Tam
Jordan Santos-Concejero
Jordan Santos-Concejero
Ross Tucker
Ross Tucker
Ronald F. Zernicke
Ronald F. Zernicke
Ronald F. Zernicke
author_facet Geoffrey T. Burns
Nicholas Tam
Nicholas Tam
Jordan Santos-Concejero
Jordan Santos-Concejero
Ross Tucker
Ross Tucker
Ronald F. Zernicke
Ronald F. Zernicke
Ronald F. Zernicke
author_sort Geoffrey T. Burns
collection DOAJ
description The dynamic complexity and individualization of running biomechanics has challenged the development of objective and comparative gait measures. Here, we present and explore several novel biomechanical metrics for running that are informed by a canonical inter-species gait template–the spring-mass model. The measures assess running mechanics systemically against the template via quantifying characteristics of a runner’s kinetics relative to the energy-conserving elastic system–i.e., their “spring-mass similarity”. Applying these metrics in a retrospective cohort investigation, we studied the overground kinetics of two heterogenous populations of runners in two footwear conditions: elite and recreational athletes in shod and barefoot conditions. Across all measures and within foot strike types, the elite runners exhibited mechanics that were more similar to those of the ideally elastic spring-mass template. The elite runners had more symmetric bounces, less discrepancy (i.e., greater coordination) between horizontal and vertical kinetic changes, and better fit to a spring-mass vertical ground reaction force time series. Barefoot running elicited greater kinetic coordination in the recreational runners. At a faster speed, the elites further improved their similarity to the template. Overall, the more economical elite group exhibited greater likeness to the linearly elastic, energy-conserving spring-mass system than their recreational counterparts. This study introduces novel biomechanical measures related to performance in distance running. More broadly, it provides new, approachable metrics for systemic quantification of gait biomechanics in runners across all demographics. These metrics may be applied to assess a runner’s global biomechanical response to a variety of interventions, including training adaptations, rehabilitation programs, and footwear conditions.
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spelling doaj.art-06b90de0b9d54abc99c7ba6ed880e69e2023-09-01T07:04:03ZengFrontiers Media S.A.Frontiers in Physiology1664-042X2023-09-011410.3389/fphys.2023.12244591224459Assessing spring-mass similarity in elite and recreational runnersGeoffrey T. Burns0Nicholas Tam1Nicholas Tam2Jordan Santos-Concejero3Jordan Santos-Concejero4Ross Tucker5Ross Tucker6Ronald F. Zernicke7Ronald F. Zernicke8Ronald F. Zernicke9School of Kinesiology, University of Michigan, Ann Arbor, MI, United StatesDivision for Exercise Science and Sports Medicine, Department of Human Biology, University of Cape Town, Cape Town, South AfricaDepartment of Physiology, University of the Basque Country UPV/EHU, Leioa, SpainDivision for Exercise Science and Sports Medicine, Department of Human Biology, University of Cape Town, Cape Town, South AfricaDepartment of Physical Education and Sport, University of the Basque Country UPV/EHU, Vitoria-Gasteiz, SpainDivision for Exercise Science and Sports Medicine, Department of Human Biology, University of Cape Town, Cape Town, South AfricaWorld Rugby, Dublin, IrelandSchool of Kinesiology, University of Michigan, Ann Arbor, MI, United StatesDepartment of Orthopaedic Surgery, University of Michigan, Ann Arbor, MI, United StatesDepartment of Biomedical Engineering, University of Michigan, Ann Arbor, MI, United StatesThe dynamic complexity and individualization of running biomechanics has challenged the development of objective and comparative gait measures. Here, we present and explore several novel biomechanical metrics for running that are informed by a canonical inter-species gait template–the spring-mass model. The measures assess running mechanics systemically against the template via quantifying characteristics of a runner’s kinetics relative to the energy-conserving elastic system–i.e., their “spring-mass similarity”. Applying these metrics in a retrospective cohort investigation, we studied the overground kinetics of two heterogenous populations of runners in two footwear conditions: elite and recreational athletes in shod and barefoot conditions. Across all measures and within foot strike types, the elite runners exhibited mechanics that were more similar to those of the ideally elastic spring-mass template. The elite runners had more symmetric bounces, less discrepancy (i.e., greater coordination) between horizontal and vertical kinetic changes, and better fit to a spring-mass vertical ground reaction force time series. Barefoot running elicited greater kinetic coordination in the recreational runners. At a faster speed, the elites further improved their similarity to the template. Overall, the more economical elite group exhibited greater likeness to the linearly elastic, energy-conserving spring-mass system than their recreational counterparts. This study introduces novel biomechanical measures related to performance in distance running. More broadly, it provides new, approachable metrics for systemic quantification of gait biomechanics in runners across all demographics. These metrics may be applied to assess a runner’s global biomechanical response to a variety of interventions, including training adaptations, rehabilitation programs, and footwear conditions.https://www.frontiersin.org/articles/10.3389/fphys.2023.1224459/fullbiomechanicsdistancerunninggaitstiffnessfootwear
spellingShingle Geoffrey T. Burns
Nicholas Tam
Nicholas Tam
Jordan Santos-Concejero
Jordan Santos-Concejero
Ross Tucker
Ross Tucker
Ronald F. Zernicke
Ronald F. Zernicke
Ronald F. Zernicke
Assessing spring-mass similarity in elite and recreational runners
Frontiers in Physiology
biomechanics
distance
running
gait
stiffness
footwear
title Assessing spring-mass similarity in elite and recreational runners
title_full Assessing spring-mass similarity in elite and recreational runners
title_fullStr Assessing spring-mass similarity in elite and recreational runners
title_full_unstemmed Assessing spring-mass similarity in elite and recreational runners
title_short Assessing spring-mass similarity in elite and recreational runners
title_sort assessing spring mass similarity in elite and recreational runners
topic biomechanics
distance
running
gait
stiffness
footwear
url https://www.frontiersin.org/articles/10.3389/fphys.2023.1224459/full
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