Validity and Reproducibility of the Garmin Vector Power Meter When Compared to the SRM Device  

作　　者：Randolph Hutchison Gibson Klapthor Karlee Edwards Kaitlin Bruneau Gregory Mocko Ardalan Vahidi 

机构地区：[1]Department of Health Sciences, Furman University, Greenville, SC 29613, USA [2]College of Medicine, Medical University of South Carolina, Columbia, SC 29425, USA [3]Department of Mechanical Engineering, Clemson University, Clemson, SC 29634, USA

出　　处：《Journal of Sports Science》2017年第5期235-241,共7页运动科学（英文版）

摘　　要：Mobile power meters allow for cyclists to monitor power output （PO） during training and competition. The Garrnin Vector power meter （VPM） measures PO at the pedal compared to the crank and has been tested in only a few limited studies. The purpose of this study was to determine the validity and reproducibility of the VPM by comparing it to the SRM. The VPM validity was tested by （1） a submaximal incremental test, （2） submaximal constant power test, （3） sprint test, and （4） a field test. The reliability of the VPM was tested by repeating the laboratory tests 10 times over a 6 week span. Significant differences （P = 0.046） were found between the mean POSRM （178 ± 1.8 W） and POVPM （163.5 ± 14.7 W） for the submaximal constant-power test. No significant differences were found between the POMAX SRM and the POMAx VPM. The reproducibility of the VPM was lower than the SRM （CV = 8.52 ±4.0 vs 3.48 ± 1.9, 10.66% vs 5.50%, and 67.7% vs 55.3% for the submaximal incremental test, submaximal constant-power test, and field test respectively）. The POVPM appears to underestimate the POSRM and is less valid and reliable across various cycling efforts.

关 键 词：Mobile power meters power output SRM VPM submaximal incremental test submaximal constant power test sprinttest field test. 

分 类 号：G[文化科学]