Journal
JOURNAL OF STRENGTH AND CONDITIONING RESEARCH
Volume 33, Issue 5, Pages 1437-1444Publisher
LIPPINCOTT WILLIAMS & WILKINS
DOI: 10.1519/JSC.0000000000002005
Keywords
(V)over doto(2)max; athlete monitoring; physiological monitoring; minute ventilation; athlete performance; cycling
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The purpose of this study was to investigate the validity and reliability of the Hexoskin vest for measuring respiration and heart rate (HR) in elite cyclists during a progressive test to exhaustion. Ten male elite cyclists (age 18-52 yrs, height 179.3 +/- 6.0 cm, body mass 73.2 +/- 9.1 kg, (V)over doto(2)max 60.7 +/- 7.8 ml.kg.min(-1), mean +/- SD) conducted a maximal aerobic cycle ergometer test using a ramped protocol (starting at 100 W with 25 W increments each min to failure) during 2 separate occasions over a 3-4-day period. Compared with the criterion measure (MetaMax 3B) the Hexoskin vest showed mainly small typical errors (1.3-6.2%) for HR and breathing frequency (f), but larger typical errors (9.5-19.6%) for minute ventilation ((V)over dot(E)) during the progressive test to exhaustion. The typical error indicating the reliability of the Hexoskin vest at moderate-intensity exercise between tests was small for HR (2.6-2.9%) and f (2.5-3.2%) but slightly larger for (V)over dot(E) (5.3-7.9%). We conclude that the Hexoskin vest is sufficiently valid and reliable for measurements of HR and f in elite athletes during high-intensity cycling but the calculated (V)over dot(E) value by the Hexoskin vest produced during such exercise should be used with caution because of the lower validity and reliability of this variable.
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