Publications

Authors:

Colosio, Alessandro L; Pedrinolla, Anna; Da Lozzo, Giorgio; Pogliaghi, Silvia

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Title:

Heart rate-index estimates oxygen uptake, energy expenditure and aerobic fitness in rugby players

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Year:

2018

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Type of item:

Articolo in Rivista

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Tipologia ANVUR:

Articolo su rivista

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Language:

Inglese

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Format:

A Stampa

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Referee:

Sì

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Name of journal:

JOURNAL OF SPORTS SCIENCE AND MEDICINE

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ISSN of journal:

1303-2968

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N° Volume:

17

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Number or Folder:

4

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Page numbers:

633-639

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Keyword:

rugby union; cardiorespiratory fitness; game demands; sports medicine

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Short description of contents:

The purpose of the study was to verify the suitability of heart rate-index (HRindex) in predicting submaximal oxygen consumption (VO2), energy expenditure (EE) and maximal oxygen consumption (VO2max) during treadmill running in rugby players. Fifteen professional rugby players (99.8 ± 12.7 kg, 1.85 ± 0.09 m) performed a running incremental test while VO2 (breath-by-breath) and heart rate (HR) were measured. HRindex was calculated (actual HR/resting HR) to predict submaximal and maximal VO2 ([(HRindex x 6)-5.0] x (3.5 body weight)) and EE. Measured and predicted VO2 and EE were compared by two-way RM-ANOVA (method, speed), correlation and Bland-Altman analysis. Measured and predicted VO2max were compared by paired t-test, correlation and Bland-Altman analysis. Submaximal VO2 and EE significantly increased (baseline VO2: 8.1 ± 1.6 ml·kg-1·min-1VO2max: 46.8 ± 4.3 ml·kg-1·min-1, baseline EE: 0.03 ± 0.01 kcal·kg-1·min-1, peak EE: 0.23 ± 0.03 kcal·kg-1·min-1) as a function of speed (p < 0.001 and p < 0.001 for VO2 and EE respectively) yet measured and predicted values at equal treadmill speeds were not significantly different (p = 0.17; p = 0.16) and highly correlated (r = 0.95; r = 0.94). The Bland-Altman analysis confirmed a non-significant bias between measured and estimated VO2 (measured: 40.3 ± 10.7, estimated: 40.7 ± 10.1 ml·kg-1·min-1, bias = 1.35 ml·kg-1·min-1, z = 1.12, precision = 3.39 ml·kg-1·min-1) and EE (measured: 20.0 ± 0.05 kcal·kg-1·min-1, estimated: 20.0 ± 0.05 kcal·kg-1·min-1, bias = 0.00 kcal·kg-1·min-1, z = 0.04, precision = 0.02 kcal·kg-1·min-1). Estimated and predicted VO2max were not statistically different (p = 0.91), highly correlated (r = 0.96), and showed a non-significant bias (bias = 0.17, z = 0.22, precision = 1.29 ml·kg-1·min-1). HRindex is a valid field method to track VO2, EE and VO2max during running in rugby players.

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Web page:

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6243626/

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Product ID:

105340

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Handle IRIS:

11562/988152

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Last Modified:

November 15, 2022

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Bibliographic citation:

Colosio, Alessandro L; Pedrinolla, Anna; Da Lozzo, Giorgio; Pogliaghi, Silvia, Heart rate-index estimates oxygen uptake, energy expenditure and aerobic fitness in rugby players «JOURNAL OF SPORTS SCIENCE AND MEDICINE» , vol. 17 , n. 4 , 2018 , pp. 633-639

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