• J Sci Med Sport · Mar 2017

    Observational Study

    Deviation from goal pace, body temperature and body mass loss as predictors of road race performance.

    • William M Adams, Yuri Hosokawa, Luke N Belval, Robert A Huggins, Rebecca L Stearns, and Douglas J Casa.
    • Korey Stringer Institute, Human Performance Laboratory, Department of Kinesiology, University of Connecticut, United States. Electronic address: william.adams@uconn.edu.
    • J Sci Med Sport. 2017 Mar 1; 20 (3): 302-306.

    ObjectivesThe purpose of this study was to examine the relationship between pacing, gastrointestinal temperature (TGI), and percent body mass loss (%BML) on relative race performance during a warm weather 11.3km road race.DesignObservational study of a sample of active runners competing in the 2014 Falmouth Road Race.MethodsParticipants ingested a TGI pill and donned a GPS enabled watch with heart rate monitoring capabilities prior to the start of the race. Percent off predicted pace (%OFF) was calculated for seven segments of the race. Separate linear regression analyses were used to assess the relationship between pace, T​GI, and %BML on relative race performance. One-way ANOVA was used to analyse post race TGI (≥40°C vs <40°C) on pace and %OFF.ResultsLarger %BML was associated with faster finish times (R2=0.19, p=0.018), faster average pace (R2=0.29, p=0.012), and a greater %OFF (R2=0.15, p=0.033). %OFF during the first mile (1.61km) significantly predicted overall finish time (R2=0.64, p<0.001) while %OFF during the second mile (3.22km) (R2 change=0.18, p<0.001) further added to the model (R2=0.82, p<0.001). Body temperature (pre race TGI and post race TGI) was not predictive of overall finish time (p>0.05). There was a trend in a slower pace (p=0.055) and greater %OFF (p=0.056) in runners finishing the race with a TGI>40°C.ConclusionsOverall, finish time was influenced by greater variations in pace during the first two miles of the race. In addition, runners who minimized fluid losses and had lower TGI were associated with meeting self-predicted goals.Copyright © 2016 Sports Medicine Australia. Published by Elsevier Ltd. All rights reserved.

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