NDLI: Reliability and stability of performances in 400-m swimming and 1500-m running.

Content Provider	World Health Organization (WHO)-Global Index Medicus
Author	Mytton, Graham J. Archer, David T. St Clair Gibson, Alan Thompson, Kevin G.
Description	Country affiliation: United kingdom Author Affiliation: Mytton GJ ( Dept for Sport and Tourism, Sunderland College, Sunderland, UK.)
Abstract	PURPOSE: To assess the reliability and stability of 400-m swimming and 1500-m running competitions to establish the number of samples needed to obtain a stable pacing profile. Coaches, athletes, and researchers can use these methods to ensure that sufficient data are collected before training and race strategies are constructed or research conclusions are drawn. METHOD: Lap times were collected from 5 world and European championship finals between 2005 and 2011, resulting in the capture of data from 40 swimmers and 55 runners. A cumulative mean for each lap was calculated, starting with the most recent data, and the number of races needed for this to stabilize to within 1% was reported. Typical error for each lap was calculated for athletes who had competed in more than 1 final. RESULTS: International swimmers demonstrated more reproducible performances than runners in 3 of the 4 laps of the race (P < .01). Variance in runners' lap times significantly decreased by 1.7-2.7% after lap 1, whereas variance in swimmers' lap times tended to increase by 0.1-0.5% after lap 1. To establish a stable profile, at least ten 400-m swimmers and forty-four 1500-m runners must be included. CONCLUSIONS: A stable race profile was observed from the analysis of 5 events for 1500-m running and 3 events for 400-m swimming. Researchers and athletes can be more certain about the pacing information collected from 400-m swimming than 1500-m running races, as the swimming data are less variable, despite both events being of similar duration.
File Format	HTM / HTML
ISSN	15550265
Issue Number	4
Volume Number	9
e-ISSN	15550273
Journal	International Journal of Sports Physiology and Performance
Language	English
Publisher	Human Kinetics
Publisher Date	2014-07-01
Publisher Place	United States
Access Restriction	Subscribed
Subject Keyword	Discipline Physiology Discipline Sports Medicine Athletic Performance Running Swimming Task Performance And Analysis Competitive Behavior Humans Reproducibility Of Results Time Factors Video Recording Journal Article Research Support, Non-u.s. Gov't
Content Type	Text
Resource Type	Article
Subject	Orthopedics and Sports Medicine Physical Therapy, Sports Therapy and Rehabilitation Sports Science

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