Is exercise training bradycardia largely explained by reduced intrinsic heart rate?
We did not find evidence that an increase in parasympathetic tone or a decrease in responsiveness to beta-adrenergic activity accounts for the reduction in resting heart rate with exercise training. We suggest that a decline in heart rate with training is most likely due to decrease in the intrinsic heart rate.
The results suggest that FLS growth in monolayer is not dependent on the disease affecting the joint. MTX treatment, however, was more relevant in determining FLS growth rate.