Using Python to Analyze Isometric Force-Time Curves

Smith, Jason Chadwick; Nagatani, Tsuyoshi; Guppy, Stuart N.; Haff, Guy Gregory

Abstract

The isometric midthigh pull (IMTP) is a commonly used strength diagnostic tool that can give insight into an athlete's force-generating capacities. The resulting force-time curves generated are commonly analyzed using commercial software packages that provide a variety of metrics. Although these software packages are useful, they are often costly and operate as a “black box,” limiting the control over how these metrics are calculated. A template created in Excel can be used to analyze isometric data. However, creating a custom script to analyze isometric trials can be more time-efficient. To provide users with an alternative analysis option, this article provides a guide for selecting IMTP force-time curves and variables for analysis and how to use Python to perform these analyses. Basic procedures are provided to ensure that accurate force-time curves are selected and analyzed, followed by strategies for using Python to read files, filter data, calculate force-time curve variables, graphically present data, and write results to a report are discussed. Although the script provided can be used to analyze the IMTP force-time curve data, it can be modified to examine other metrics as needed by the user (see, Supplemental Digital Content 1, http://links.lww.com/SCJ/A412).

• Journal Article Type: Article
• Online Publication Date: Nov 27, 2024
• Deposit Date: Jan 23, 2025
• Journal: Strength & Conditioning Journal
• Print ISSN: 1524-1602
• Electronic ISSN: 1533-4295
• Publisher: Lippincott, Williams & Wilkins
• Peer Reviewed: Peer Reviewed
• DOI: https://doi.org/10.1519/ssc.0000000000000872