Key result
A 3-month resting period in 2-year-old trotters resulted in a 14.54% increase in left ventricular free wall thickness and a 4.99% decrease in left ventricular inner diameter compared to racing condition.
Why the study?
Does a 3-month resting period affect heart size and myocardial function in trained trotters?
Observational (n=12)
No
Does a 3-month resting period affect heart size and myocardial function in trained trotters?
A 3-month resting period with pasture access in trained trotters leads to minor echocardiographic changes, suggesting voluntary exercise may partially compensate for the lack of race training.
Answers are grounded in this paper and cite their sources.
Detraining effects on equine cardiac function remain hypothesis-generating; prospective trials needed before clinical adoption in racehorses.
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Gehlen et al. (2017) conducted an observational in Healthy trotters (horses) (n=12). 3-month resting period vs. Racing condition (trained) was evaluated on Left ventricular free wall thickness (cm) (14.54% increase, p=0.006). A 3-month resting period in 2-year-old trotters resulted in a 14.54% increase in left ventricular free wall thickness and a 4.99% decrease in left ventricular inner diameter compared to racing condition.
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