Key result
Endurance training partially reverses hypertensive damage to calcium release units, cutting Ca²⁺ sparks by ~18%.
Why the study?
Hypertension causes defects in calcium release unit function in cardiomyocytes, and it is unclear whether endurance exercise training can attenuate these deleterious effects in left ventricular myocytes.
Does endurance exercise training attenuate the deleterious effects of hypertension on calcium release units in left ventricular myocytes of spontaneously hypertensive rats?
Comparison
Endurance exercise training vs sedentary control in normotensive and hypertensive rats
Design
Preclinical experimental study
Follow-up
8 weeks
Authors
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Exercise training attenuated hypertension effects on myocyte Ca²⁺ sparks in rats; leaves open translation to human hypertension therapy.
Does endurance exercise training attenuate the deleterious effects of hypertension on calcium release units in left ventricular myocytes of spontaneously hypertensive rats?
Absolute Event Rate: 6.26% vs 7.61%
Endurance exercise training attenuates the deleterious effects of hypertension on calcium release units and Ca²⁺ sparks in left ventricular myocytes of spontaneously hypertensive rats.
Carneiro-Júnior et al. (2014) studied Hypertension (n=28). Endurance exercise training vs. No exercise (sedentary control) was evaluated on Frequency of Ca²⁺ sparks (per 100 µm/s). Endurance exercise training partially reversed the deleterious effects of hypertension on calcium release units, reducing the frequency of Ca²⁺ sparks from 7.61 to 6.26 per 100 µm/s.
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