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OJVRTM
Online Journal of Veterinary Research©
(Including Medical and Laboratory Research)
Established 1994
ISSN 1328-925X
Volume 27 (7): 432-436, 2023
Cardiovascular and hematological responses to Submaximal
exercise in athletic horses.
Mehdi
Sakha1 DVM PhD, Hasan Rahmani2 DVM.
Faculties of Veterinary
Science, Islamic Azad University1, Tehran and Shahid
Bahonar University2, Kerman, Iran.
ABSTRACT
Sakha M, Rahmani H., Cardiovascular and hematological responses to
submaximal exercise in athletic horses, Onl J Vet
Res., 27 (7): 432-436,
2023. Cardiovascular
response and hematology in 19 athletic before and after a 1600 meter race are
reported. Resting heart rates of 36.1 + 5.5bpm increased ~72% to 132 +
17 bpm immediately after race (P < 0.001) and fell ~42bpm 15-50%, 1-5min after
but only reached resting rate of 36bpm by 10-15 minutes. We found no
differences in maximum rates between individual horses (P > 0.05). Heart
rate declined ~15% by 1min ranging 5.8 to 30% but ~42% remained below mean and
by 2nd min 29% and 51% by 5th minute. Eleven horses
reached 60bpm after 20 min, 21.1% had normal 36.8bpm by 30-40min but only 63.2%
animals had reached normal
resting
heart rates by 60min. Mean heart rates after 60min was 42.4 + 11.7 bpm.
Maximum heart rates suggest submaximal exercise in these horses. Mean red cell
had increased 25% and volume ~8% (P < 0.05) immediately after race. Our
results suggest that maximum heart rates, reduction (min), red and packed cell
volumes after exercise may be related with performance in athletic horses.
Key
words: Submaximal, exercise, horse, heart,
hematology, cardiac response.
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