Devising a Pace-Based Definition for “The Wall”: An Observational Analysis of Marathoners' Subjective Experiences of Fatigue

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Title: Devising a Pace-Based Definition for “The Wall”: An Observational Analysis of Marathoners' Subjective Experiences of Fatigue
Authors: Doherty, CailbheKeogh, AlisonSmyth, BarryMegyesi, PeterCaulfield, Brian
Permanent link: http://hdl.handle.net/10197/12198
Date: 1-May-2020
Online since: 2021-05-25T16:07:08Z
Abstract: Context Many runners report “hitting The Wall” (HTW) during a marathon (42.2 km). However, the performance manifestation of this subjectively experienced phenomenon remains unclear. Objective To identify a pace-based classification for HTW by integrating subjective reports of fatigue and runners' pacing profiles during a marathon. Design Cross-sectional study. Setting Public race event (2018 Dublin Marathon). Patients or Other Participants Eighty-three runners (28 [34%] women, 55 [66%] men, age = 41.5 ± 9.1 years, height = 1.73 ± 0.09 m, mass = 70.2 ± 10.1 kg). Main Outcome Measure(s) The pacing profiles for respondents to our postrace questionnaire that concerned the phenomenon of HTW were evaluated. Receiver operating characteristic analyses were performed on discretized outcomes of the time series of marathoners' paces during the race. Results Using the receiver operating characteristic analyses, we observed that runners could be classified as having experienced HTW if they ran any 1-km segment 11% slower than the average of the remaining segments of the race (accuracy = 84.6%, sensitivity = 1, specificity = 0.6) or if the standard deviation of the normalized 1-km split times exceeded 0.0532 (accuracy = 83%, sensitivity = 0.818, specificity = 0.8). Similarly, runners could be classified as having experienced HTW if they ran any 5-km segment 7.3% slower than the average of the remaining 5-km segments of the race (accuracy = 84.6%, sensitivity = 1, specificity = 0.644) or if the standard deviation of the normalized 5-km split times exceeded 0.0346 (accuracy = 82%, sensitivity = 0.909, specificity = 0.622). Conclusions These pace-based criteria could be valuable to researchers evaluating HTW prevalence in cohorts for whom they lack subjective questionnaire data.
Funding Details: European Commission - European Regional Development Fund
Science Foundation Ireland
Funding Details: Insight Research Centre
Type of material: Journal Article
Publisher: Allen Press
Journal: Journal of Athletic Therapy and Training
Volume: 55
Issue: 5
Start page: 494
End page: 500
Copyright (published version): 2020 National Athletic Trainers' Association
Keywords: Personal sensingRunningSportsExercisePhysical fitnessPhysical enduranceEndurance training
DOI: 10.4085/1062-6050-243-19
Language: en
Status of Item: Peer reviewed
This item is made available under a Creative Commons License: https://creativecommons.org/licenses/by-nc-nd/3.0/ie/
Appears in Collections:Public Health, Physiotherapy and Sports Science Research Collection
Insight Research Collection

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