Comparison of analyses of respiratory gases made with the K4b2 portable and Quark laboratory analysers in horses

Leprêtre, Pierre-Marie; Metayer, Nicolas; Giovagnoli, G.; Pagliei, E.; Barrey, Éric

doi:10.1136/vetrec.165.1.22

Cited by 7 publications

(12 citation statements)

References 20 publications

(35 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In addition, if we compare with the data given in other studies, at the speed required for winning endurance races (18 km/h), under treadmill conditions, with the K4B 2 gas‐exchange device, the extrapolated VO 2 seems lesser in Arabians than in other breeds. Indeed, 42 ml/min/kg bwt was reported in the Arabians of this study vs. 50.1 ml/min/kg bwt for Thoroughbred cross Warmblood horses (Leprêtre et al . 2009) and 70.8 for untrained saddle horses (Art et al .…”

Section: Discussionmentioning

confidence: 51%

“…Although the gas exchange device has already been validated during exercise (Art et al . 2006; Leprêtre et al . 2009), this study again confirmed that the respiratory mask was well accepted by the horses that performed the exercise test on the field.…”

Section: Discussionmentioning

confidence: 99%

“…Each horse was equipped with a validated portable respiratory gas analyser, which measured breath‐by‐breath respiratory variables (K4b 2 ) 2 (Art et al . 2006; Leprêtre et al . 2009) and heart rate (HR, Polar610) 3 (Holopherne et al .…”

Section: Methodsmentioning

confidence: 99%

“…However, RE can now be measured in a standardised field exercise test with ambulatory gas exchange (Art et al . 2006; Leprêtre et al . 2009) and gait analysers (Barrey et al .…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Oxygen consumption and gait variables of Arabian endurance horses measured during a field exercise test

Cottin

Metayer

Goachet

et al. 2010

Equine Veterinary Journal

Self Cite

View full text Add to dashboard Cite

SummaryReasons for performing study: Arabian horses have morphological, muscular and metabolic features designed for endurance races. Their gas exchange and gait variables were therefore measured during a field exercise test. This study presents original respiratory and locomotor data recorded in endurance horses under field conditions. Hypothesis and objectives: Respiratory gas exchange ratio (RER) of Arabian horses at the speed required to win endurance races (18 km/h for 120-160 km) are <1 and running economy (RE) is also low in order to maintain exercise intensity using aerobic metabolism for long intervals. The purpose of this study was to measure oxygen consumption and gait variables in Arabian endurance horses running in the field in order to estimate RER and RE. Materials and methods: Five Arabian horses trained for endurance racing were test ridden at increasing speeds on the field. Their speed was recorded and controlled by the rider using a GPS logger. Each horse was equipped with a portable respiratory gas analyser, which measured breath-by-breath respiratory variables and heart rate. The gait variables were recorded using tri-axial accelerometer data loggers and software for gait analysis. Descriptive statistics and linear regressions were used to analyse the speed related changes in each variable with P<0.05 taken as significant. Results: At a canter speed corresponding to endurance race winning speed (18 km/h), horses presented a VO2 = 42 Ϯ 9 ml/min/kg bwt, RER = 0.96 Ϯ 0.10 and RE (= VO2/speed) = 134 Ϯ 27 l/km/kg bwt. Linear relationships were observed between speed and VO2, HR and gait variables. Significant correlations were observed between VO2 and gait variables. Conclusions and potential relevance: The RER of 0.96 at winning endurance speed indicates that Arabian horses mainly use aerobic metabolism based on lipid oxidation and that RER may also be related to a good coordination between running speed, respiratory and gait parameters.

show abstract

Section: Discussionmentioning

confidence: 51%

Section: Discussionmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

“…However, RE can now be measured in a standardised field exercise test with ambulatory gas exchange (Art et al . 2006; Leprêtre et al . 2009) and gait analysers (Barrey et al .…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Oxygen consumption and gait variables of Arabian endurance horses measured during a field exercise test

Cottin

Metayer

Goachet

et al. 2010

Equine Veterinary Journal

Self Cite

View full text Add to dashboard Cite

show abstract

“…VO 2 is converted to EE from its caloric equivalent (Levine, 2005), and respiratory exchange ratio (RER) is calculated from VO 2 and VCO 2 , together giving information regarding substrate utilization during exercise. Although first attempts were made to develop portable devices for horses since 1974 (Hörnicke et al, 1974;Pagan et al, 1986;Hanak, 1987), it has only been in the last decade that the equine K4b 2 was validated Leprêtre et al, 2009). This system presents the advantage of measuring EE in genuine endurance conditions, including the extra load by the rider and tack or the condition of the ground surface (Lawrence, 2007).…”

Section: Introductionmentioning

confidence: 99%

Implementation of field cardio-respiratory measurements to assess energy expenditure in Arabian endurance horses

Goachet

Julliand

2015

Animal

View full text Add to dashboard Cite

Measurements of respiratory exchanges in genuine exercise conditions are undoubtedly of interest to further define the energy needs of endurance horses. However, the equine K4b 2 , the gas exchanges portable device validated for equines, has not been used in Arabian endurance horses yet. Therefore, the objective of this study was to implement field cardio-respiratory measurements in such horses using the equine K4b 2 in order to assess energy expenditure (EE). Measurements of heart rate (HR), oxygen uptake (VO 2 ), carbon dioxide production (VCO 2 ), respiratory frequency (RF), tidal volume (VT) and minute expired volume (VE) were carried out at rest and during a 20-min submaximal incremental field exercise in five trained Arabian endurance horses equipped with the K4b 2 system. The relationship between HR and VO 2 was determined for each horse. EE of the exercise session was calculated from direct VO 2 measurements and individual HR-VO 2 regression. Out of the five horses, four tolerated the equipment. Respiratory and metabolic variables at rest and during exercise, as well as EE measured at the different gaits, were consistent with reported values in exercising horses: VO 2 ranged from 4.8 to 54.1 ml/min per kg from rest to canter, respectively, and EE from 82 to 1095 J/min per kg BW. The 20-min exercise session EE accounted for 6258 and 6332 J from direct VO 2 measurements and individual HR-VO 2 regression, respectively, which did not differ significantly. Providing an adaptation period and several technical adjustments, the present equine K4b 2 could be used to assess EE in Arabian endurance horses in a controlled environment. The prediction of EE from the individual VO 2 -HR relationship might be an alternative method to evaluate EE when VO 2 measurements are not possible.

show abstract

Comparison of ventilatory and oxygen consumption measurements of yearling Thoroughbred colts and fillies exercising unridden on an all-weather track

Katz,

Gough,

McGivney

et al. 2023

The Veterinary Journal

View full text Add to dashboard Cite

Comparison of analyses of respiratory gases made with the K4b2 portable and Quark laboratory analysers in horses

Cited by 7 publications

References 20 publications

Oxygen consumption and gait variables of Arabian endurance horses measured during a field exercise test

Oxygen consumption and gait variables of Arabian endurance horses measured during a field exercise test

Implementation of field cardio-respiratory measurements to assess energy expenditure in Arabian endurance horses

Comparison of ventilatory and oxygen consumption measurements of yearling Thoroughbred colts and fillies exercising unridden on an all-weather track

Contact Info

Product

Resources

About