Analysis of Running Ground Reaction Forces Using the One-Dimensional Statistical Parametric Mapping (SPM1d)
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1.Ningbo University;2.Faculty of Sports Science,Ningbo University,Ningbo,Zhejiang

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    Abstract:

    Objective: This study aimed to analyse the difference in the ground reaction force between male and female runners and left versus right limbs using the one-dimensional Statistical Parametric Mapping. Methods: Thirty male and female runners participated the running test on the Bertec force treadmill at a speed of 12 km/h (3.3m/s). Ground reaction force of consecutive five steps were recorded. The independent-sample t test and paired-sample t test in the Statistical Parametric Mapping package were used to check the male versus female and right versus left difference. Results: 1) Male and female runners showed inter-limb asymmetry in the vertical average loading rate (VALR), and male was significantly higher than female with no significance in the right limb. 2) Male and female runners showed significance in the right vertical GRF during push-off and medial-lateral GRF during landing, while left medial-lateral GRF presented significance during landing and mid stance. Male showed right versus left significance in the anterior-posterior GRF during push-off, vertical GRF during landing and push-off and medial-lateral GRF during landing, while female exhibited right versus left significance in the vertical GRF during landing and push-off. Conclusion: This study introduced the application of SPM in the statistical analysis of ground reaction force, elaborated the procedures and theory, compared the test of time-series data in SPM and discrete value with traditional statistics, and discussed the difference and features in SPM and SnPM, thus providing implication and reference for the application in the data analysis of sports biomechanics. Comparison in the male versus female and right versus left revealed the genders and inter-limb symmetrical differences in the landing, mid-stance and push-off phases during stance. Findings laid the foundation for future investigation of mechanism in running related injuries and strategy of prevention and treatment.

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History
  • Received:June 12,2020
  • Revised:July 24,2020
  • Adopted:July 28,2020
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