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Effects of Aerobic Training on Systolic, Diastolic and Mean Blood Pressure in Arabian Horses
Author(s) -
Mirian M,
Piffer ML,
Bogossian PM,
Fernandes WR
Publication year - 2014
Publication title -
equine veterinary journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.82
H-Index - 87
eISSN - 2042-3306
pISSN - 0425-1644
DOI - 10.1111/evj.12267_73
Subject(s) - medicine , blood pressure , treadmill , aerobic exercise , hemodynamics , cardiology , heart rate , diastole , mean arterial pressure , anesthesia , physical therapy
Exercise causes several physiological changes resulting from autonomic and hemodynamic adaptations, but there are few reports about the behaviour of blood pressure ( BP ) during physical activity in horses, as well as the effect of training on BP . Methods 9 untrained Arabian horses underwent two treadmill evaluations (before and after 90 days of aerobic training at 60% HRmax ) at 6% incline with incremental speed increases every 3 minutes (commencing at 2.5 m/s and reaching 12.5 m/s). The facial artery was cannulated with a 20 G catheter and systolic blood pressure ( SBP ), mean ( MAP ) and diastolic ( DBP ) blood pressures were recorded with a multiparameter monitor ( GE Dash 3000 model). Data were evaluated by two‐way ANOVA for repeated measures and Bonferroni multiple comparison (P<0.05). Results During initial evaluation SBP increased in a gradual and uniform manner as speed increased, reaching a maximum of 208 mmHg at a speed of 10 m/s. After training, SBP behaved similarly during treadmill evaluation, however values were lower until 10 m/s (P<0.001), and the maximum value of SBP obtained was 218 mmHg at 12.5 m/s. DPB was not significantly different (P = 0.124). MAP emulated the behaviour of SBP (P = 0.012). Conclusions A decrease in SBP and MAP during identical treadmill evaluations before and after 90 days of aerobic exercise (60% HR max) indicated that training decreased cardiac effort required for the maintenance of physical activity. Ethical Animal Research procedures were approved by the University of S ão P aulo. Sources of funding: none declared. Competing interests: none.