A consort‐guided randomized, blinded, controlled clinical trial on the effects of 6 weeks training on heart rate variability in thoroughbred horses
Abstract Background Fitness assessment of horses remains challenging. Heart rate variability (HRV) can be used to monitor human athlete's training, but its value is unknown in horses. Hypothesis The linear domain HRV variables are affected by fitness. Animals Twelve healthy untrained thoroughbr...
Saved in:
| Main Authors: | , , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Wiley
2025-01-01
|
| Series: | Journal of Veterinary Internal Medicine |
| Subjects: | |
| Online Access: | https://doi.org/10.1111/jvim.17253 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1832584127617957888 |
|---|---|
| author | Emma Santosuosso Renaud Léguillette Sierra Shoemaker Ryan Baumwart Sierra Temple Kaneesha Hemmerling Tessa Kell Warwick Bayly |
| author_facet | Emma Santosuosso Renaud Léguillette Sierra Shoemaker Ryan Baumwart Sierra Temple Kaneesha Hemmerling Tessa Kell Warwick Bayly |
| author_sort | Emma Santosuosso |
| collection | DOAJ |
| description | Abstract Background Fitness assessment of horses remains challenging. Heart rate variability (HRV) can be used to monitor human athlete's training, but its value is unknown in horses. Hypothesis The linear domain HRV variables are affected by fitness. Animals Twelve healthy untrained thoroughbreds were randomly split into a training group (6 weeks of incremental racetrack training) and a control group (no training). Methods Linear domain HRV variables were analyzed (high frequency [HF], low frequency [LF], their normalized units [Hfnu, Lfnu], root mean square of successive differences between beats [RMSSD], Poincaré plot features [SD1 and SD2]) while resting overnight before (baseline) and after 2, 4 and 6 weeks of training. V̇O2max and echocardiographic indexes were measured at baseline and after 6 weeks. Changes in HRV variables over time (ANOVA), and correlation with V̇O2max (Pearson's chi‐squared test) were tested (P < .05 significance). Results V̇O2max, LF/HF ratio, and LFnu increased while HFnu decreased in the training group (before and after training mean [SD] values: V̇O2max 134 [12.8]‐146 [16.5] mL/[kg min]; P < .001; LF/HF ratio 0.51 [0.2]‐0.91 [0.3] [P = .02]; LFnu 37.5 [10.1]‐46.8 [7.8] [P = .02]; HFnu 76.2 [7.9]‐53.2 [7.7] [P < .001]). Training did not affect RMSSD, SD1, SD2, resting HR, or echocardiographic indexes. Strong correlations were found between V̇O2max and HRV variables (V̇O2max and LFnu [r = −0.59, P = .04]; ΔV̇O2max and the corresponding ΔLF [r = −0.88, P = .02]). Conclusions and Clinical Importance Six weeks of training affected some frequency domain HRV variables. Further studies are necessary to validate the use of HRV for monitoring horses' responses to training. |
| format | Article |
| id | doaj-art-135143e1ffe4482daffe8e40253bd2a6 |
| institution | Kabale University |
| issn | 0891-6640 1939-1676 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Journal of Veterinary Internal Medicine |
| spelling | doaj-art-135143e1ffe4482daffe8e40253bd2a62025-01-27T15:22:41ZengWileyJournal of Veterinary Internal Medicine0891-66401939-16762025-01-01391n/an/a10.1111/jvim.17253A consort‐guided randomized, blinded, controlled clinical trial on the effects of 6 weeks training on heart rate variability in thoroughbred horsesEmma Santosuosso0Renaud Léguillette1Sierra Shoemaker2Ryan Baumwart3Sierra Temple4Kaneesha Hemmerling5Tessa Kell6Warwick Bayly7Faculty of Veterinary Medicine University of Calgary Calgary Alberta CanadaFaculty of Veterinary Medicine University of Calgary Calgary Alberta CanadaDepartment of Veterinary Clinical Sciences Washington State University Pullman Washington USADepartment of Veterinary Clinical Sciences Washington State University Pullman Washington USADepartment of Veterinary Clinical Sciences Washington State University Pullman Washington USADepartment of Veterinary Clinical Sciences Washington State University Pullman Washington USADepartment of Veterinary Clinical Sciences Washington State University Pullman Washington USADepartment of Veterinary Clinical Sciences Washington State University Pullman Washington USAAbstract Background Fitness assessment of horses remains challenging. Heart rate variability (HRV) can be used to monitor human athlete's training, but its value is unknown in horses. Hypothesis The linear domain HRV variables are affected by fitness. Animals Twelve healthy untrained thoroughbreds were randomly split into a training group (6 weeks of incremental racetrack training) and a control group (no training). Methods Linear domain HRV variables were analyzed (high frequency [HF], low frequency [LF], their normalized units [Hfnu, Lfnu], root mean square of successive differences between beats [RMSSD], Poincaré plot features [SD1 and SD2]) while resting overnight before (baseline) and after 2, 4 and 6 weeks of training. V̇O2max and echocardiographic indexes were measured at baseline and after 6 weeks. Changes in HRV variables over time (ANOVA), and correlation with V̇O2max (Pearson's chi‐squared test) were tested (P < .05 significance). Results V̇O2max, LF/HF ratio, and LFnu increased while HFnu decreased in the training group (before and after training mean [SD] values: V̇O2max 134 [12.8]‐146 [16.5] mL/[kg min]; P < .001; LF/HF ratio 0.51 [0.2]‐0.91 [0.3] [P = .02]; LFnu 37.5 [10.1]‐46.8 [7.8] [P = .02]; HFnu 76.2 [7.9]‐53.2 [7.7] [P < .001]). Training did not affect RMSSD, SD1, SD2, resting HR, or echocardiographic indexes. Strong correlations were found between V̇O2max and HRV variables (V̇O2max and LFnu [r = −0.59, P = .04]; ΔV̇O2max and the corresponding ΔLF [r = −0.88, P = .02]). Conclusions and Clinical Importance Six weeks of training affected some frequency domain HRV variables. Further studies are necessary to validate the use of HRV for monitoring horses' responses to training.https://doi.org/10.1111/jvim.17253echocardiographyfitnessracetrack conditioningtrainingV̇O2max |
| spellingShingle | Emma Santosuosso Renaud Léguillette Sierra Shoemaker Ryan Baumwart Sierra Temple Kaneesha Hemmerling Tessa Kell Warwick Bayly A consort‐guided randomized, blinded, controlled clinical trial on the effects of 6 weeks training on heart rate variability in thoroughbred horses Journal of Veterinary Internal Medicine echocardiography fitness racetrack conditioning training V̇O2max |
| title | A consort‐guided randomized, blinded, controlled clinical trial on the effects of 6 weeks training on heart rate variability in thoroughbred horses |
| title_full | A consort‐guided randomized, blinded, controlled clinical trial on the effects of 6 weeks training on heart rate variability in thoroughbred horses |
| title_fullStr | A consort‐guided randomized, blinded, controlled clinical trial on the effects of 6 weeks training on heart rate variability in thoroughbred horses |
| title_full_unstemmed | A consort‐guided randomized, blinded, controlled clinical trial on the effects of 6 weeks training on heart rate variability in thoroughbred horses |
| title_short | A consort‐guided randomized, blinded, controlled clinical trial on the effects of 6 weeks training on heart rate variability in thoroughbred horses |
| title_sort | consort guided randomized blinded controlled clinical trial on the effects of 6 weeks training on heart rate variability in thoroughbred horses |
| topic | echocardiography fitness racetrack conditioning training V̇O2max |
| url | https://doi.org/10.1111/jvim.17253 |
| work_keys_str_mv | AT emmasantosuosso aconsortguidedrandomizedblindedcontrolledclinicaltrialontheeffectsof6weekstrainingonheartratevariabilityinthoroughbredhorses AT renaudleguillette aconsortguidedrandomizedblindedcontrolledclinicaltrialontheeffectsof6weekstrainingonheartratevariabilityinthoroughbredhorses AT sierrashoemaker aconsortguidedrandomizedblindedcontrolledclinicaltrialontheeffectsof6weekstrainingonheartratevariabilityinthoroughbredhorses AT ryanbaumwart aconsortguidedrandomizedblindedcontrolledclinicaltrialontheeffectsof6weekstrainingonheartratevariabilityinthoroughbredhorses AT sierratemple aconsortguidedrandomizedblindedcontrolledclinicaltrialontheeffectsof6weekstrainingonheartratevariabilityinthoroughbredhorses AT kaneeshahemmerling aconsortguidedrandomizedblindedcontrolledclinicaltrialontheeffectsof6weekstrainingonheartratevariabilityinthoroughbredhorses AT tessakell aconsortguidedrandomizedblindedcontrolledclinicaltrialontheeffectsof6weekstrainingonheartratevariabilityinthoroughbredhorses AT warwickbayly aconsortguidedrandomizedblindedcontrolledclinicaltrialontheeffectsof6weekstrainingonheartratevariabilityinthoroughbredhorses AT emmasantosuosso consortguidedrandomizedblindedcontrolledclinicaltrialontheeffectsof6weekstrainingonheartratevariabilityinthoroughbredhorses AT renaudleguillette consortguidedrandomizedblindedcontrolledclinicaltrialontheeffectsof6weekstrainingonheartratevariabilityinthoroughbredhorses AT sierrashoemaker consortguidedrandomizedblindedcontrolledclinicaltrialontheeffectsof6weekstrainingonheartratevariabilityinthoroughbredhorses AT ryanbaumwart consortguidedrandomizedblindedcontrolledclinicaltrialontheeffectsof6weekstrainingonheartratevariabilityinthoroughbredhorses AT sierratemple consortguidedrandomizedblindedcontrolledclinicaltrialontheeffectsof6weekstrainingonheartratevariabilityinthoroughbredhorses AT kaneeshahemmerling consortguidedrandomizedblindedcontrolledclinicaltrialontheeffectsof6weekstrainingonheartratevariabilityinthoroughbredhorses AT tessakell consortguidedrandomizedblindedcontrolledclinicaltrialontheeffectsof6weekstrainingonheartratevariabilityinthoroughbredhorses AT warwickbayly consortguidedrandomizedblindedcontrolledclinicaltrialontheeffectsof6weekstrainingonheartratevariabilityinthoroughbredhorses |