Does a low heart rate always mean an enlarged heart size?

Former Member
Former Member
I was having this discussion with someone who says that a person with a low resting heart rate automatically has an enlarged heart. I once had my heart checked. While my resting heart rate was around 35 bpm, my heart size was rather average. I recently read something that said that an athlete does NOT automatically have an enlarged heart. I can't find that article anymore. Does anyone know in what way a low heart rate has to do with the size of your heart and if all swimmers have larger hearts than average people?
Parents
  • Not a doctor here, either so this is from personal experience. No, it does not mean enlarged heart but it can mean heart issues. My dad has a low heart rate. For him it was especially low when he had a major blockage and needed a bypass (which he got). He tracks his with a heart rate monitor. For me, I am the opposite. I have a high resting heart rate and I have a thyroid condition. My heart rate went up when the thyroid condition came. So thyroid can cause either low or high heart rates.
Reply
  • Not a doctor here, either so this is from personal experience. No, it does not mean enlarged heart but it can mean heart issues. My dad has a low heart rate. For him it was especially low when he had a major blockage and needed a bypass (which he got). He tracks his with a heart rate monitor. For me, I am the opposite. I have a high resting heart rate and I have a thyroid condition. My heart rate went up when the thyroid condition came. So thyroid can cause either low or high heart rates.
Children
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