偏离目标配速、体温及体重减轻作为公路赛跑成绩的预测指标。

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

作者信息

Adams William M, Hosokawa Yuri, Belval Luke N, Huggins Robert A, Stearns Rebecca L, Casa Douglas J

机构信息

Korey Stringer Institute, Human Performance Laboratory, Department of Kinesiology, University of Connecticut, United States.

出版信息

J Sci Med Sport. 2017 Mar;20(3):302-306. doi: 10.1016/j.jsams.2016.07.009. Epub 2016 Sep 28.

DOI:10.1016/j.jsams.2016.07.009

PMID:27720128

Abstract

OBJECTIVES

The purpose of this study was to examine the relationship between pacing, gastrointestinal temperature (T), and percent body mass loss (%BML) on relative race performance during a warm weather 11.3km road race.

DESIGN

Observational study of a sample of active runners competing in the 2014 Falmouth Road Race.

METHODS

Participants ingested a T pill and donned a GPS enabled watch with heart rate monitoring capabilities prior to the start of the race. Percent off predicted pace (%) was calculated for seven segments of the race. Separate linear regression analyses were used to assess the relationship between pace, T, and %BML on relative race performance. One-way ANOVA was used to analyse post race T (≥40°C vs <40°C) on pace and %.

RESULTS

Larger %BML was associated with faster finish times (R=0.19, p=0.018), faster average pace (R=0.29, p=0.012), and a greater % (R=0.15, p=0.033). % during the first mile (1.61km) significantly predicted overall finish time (R=0.64, p<0.001) while % during the second mile (3.22km) (R change=0.18, p<0.001) further added to the model (R=0.82, p<0.001). Body temperature (pre race T and post race T) was not predictive of overall finish time (p>0.05). There was a trend in a slower pace (p=0.055) and greater % (p=0.056) in runners finishing the race with a T>40°C.

CONCLUSIONS

Overall, 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 T were associated with meeting self-predicted goals.

摘要

目的

本研究旨在探讨在温暖天气下进行的11.3公里公路赛中，配速、胃肠道温度（T）和体重减轻百分比（%BML）与相对比赛成绩之间的关系。

设计

对参加2014年法尔茅斯公路赛的活跃跑步者样本进行观察性研究。

方法

参与者在比赛开始前服用一颗温度药丸，并佩戴具备心率监测功能的GPS手表。计算比赛七个赛段的预测配速百分比（%）。采用单独的线性回归分析来评估配速、T和%BML与相对比赛成绩之间的关系。使用单因素方差分析来分析赛后体温（≥40°C与<40°C）对配速和%的影响。

结果

更大的%BML与更快的完赛时间（R=0.19，p=0.018）、更快的平均配速（R=0.29，p=0.012）以及更高的%（R=0.15，p=0.033）相关。第一英里（1.61公里）的%显著预测了总体完赛时间（R=0.64，p<0.001），而第二英里（3.22公里）的%（R变化=0.18，p<0.001）进一步纳入模型（R=0.82，p<0.001）。体温（赛前T和赛后T）不能预测总体完赛时间（p>0.05）。赛后体温>40°C的跑步者存在配速较慢（p=0.055）和%较高（p=0.056）的趋势。