1. A Comparison of Heart Rate Measures between Fit Cohorts of Cyclists.
- Author
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Wyatt, Frank B., Russell, Kristin, and Munoz, Nicole
- Subjects
HEART beat ,PHYSICAL fitness ,CYCLISTS ,OXYGEN consumption ,EXERCISE physiology - Abstract
The purpose of this study was to assess heart rate variability, slope of heart rate response, and heart rate threshold between cycling groups of differing fitness status. Male and female cyclists (N=115) were placed into two groups, competitive and recreational cyclists. Each subject performed a maximal test to exhaustion on the cycle ergometer. During this time, oxygen consumption (VO
2 ), carbon dioxide production (VCO2 ) in L·min-1 and mL·kg-1 ·min-1 , and heart rate (beats·min-1) were determined. Based on maximal oxygen consumption (VO2 max), the competitive cyclists were placed in quartiles with 1 being the least fit and quartile 4 being the most fit. These quartiles were compared between groups, and to recreational cyclists considered "average fit". A trend line of best fit was assigned to each phase of heart rate response. Thresholds of noted heart rate change were determined for comparisons between the groups. Additionally, heart rate variation was determined through heart rate changes every 20 sec throughout the test. From the assessment of heart rate slope, variability and thresholds, differences were seen primarily between the fit quartiles and the recreational group. Threshold occurrences were similar across groups. Heart rates were higher at threshold with the low fit group as compared to lower threshold in the fit group. However, while heart rate slope was not different between quartiles, it was significantly steeper in the recreational group. In conclusion, in comparing groups within a very fit category and those within a fit, recreational classification, heart rate response measured through various means is notable. [ABSTRACT FROM AUTHOR]- Published
- 2018