started04

Hi Ross,

I'm no expert so I don't take the comment seriously.

Anyway, there are two bases for heart enlargement. If the heart is pathologically enlarged, the heart will have an increase of contractional strength, but it will eventually or quickly drop in strength unless the underlying pathos is successfully treated; I'm not aware how a dilated heart size can be reduced without medication.

An enlarged heart due to beneficial exercise will increase the strength of contractions and be integrated into a healthy system. A healthy enlarged heart can reduced by deconditioning.

For some perspective, there are two types of muscle fiber. Most people are born with and equal amount fast twitch and slow twitch muscle fibers. As one ages there is a loss of fast twitch (best for strength) and more in comparison are slow twitch (best for fast acceleration and sprinting) and endurance.

It is better exercise for the heart (some enlargement possible) to increase the heart rate and sustained for a pre-determined time. To involve slow twitch would be to sprint, but a beneficially heart rate is not sustained. A fast walk or jog would involve both fast twitch and slow twitch muscle fibers. So it is clear to me a fast walk or jogging is more beneficial for the heart.

Because one loses fast twitch with aging, heavier weight resistance training can slow the process.

If one searches enough web sites, etc., I'm sure there will something someone will advocate for almost anything. I'm not into reviewing and opining medication or supplements although there may be unsubstantiated merit.