| I find HN rife with its own form of "I'm too smart" bro-science. Your cardiologist spoke directly with you; they're a trained, accredited, licensed, and in good standing professional. Go with your interpretation of what they told you. Additionally, lets learn how to over-come HN's own form of bro-science because I'm pissed off right now. Step 1: go to pubmed and throw the most basic of terms in: "marathon training cardiology damage" Step 2: Quickly review the studies listed; we want to see studies after the advent of advanced hormone and mRNA quantification--that's around 2005 to 2010 or so--or anything within the last 5-10 years. Step 3: Read through one study especially if it appears to be well setup or specific to what we are trying to understand--we can look at the abstract if we have some knowledge in the area, or are just getting a feel for the topic. Step 3b: take note of terms; this study is an easy one and has everything we want to see in the abstract: https://pubmed.ncbi.nlm.nih.gov/36767963/ "Effects of Long-Term Endurance Exercise on Cardiac Morphology, Function, and Injury Indicators among Amateur Marathon Runners" in the Int J Environ Res Public Health
. 2023 Jan 31;20(3):2600. doi: 10.3390/ijerph20032600. Step 3c terms: - cardiac morphology, function, injury indicators; - left ventricular end-diastolic volume and left ventricular end-systolic volume indicator; - myocardial injury indicators, serum levels of cardiac troponin I, creatine kinase (CK), creatine kinase-MB (CK-MB), lactate dehydrogenase (LDH), aspartate aminotransferase (AST), and N-terminal pro-b-type natriuretic peptide (NT-proBNP) - Long-term high-intensity endurance exercise (not indicated; but "High intensity Steady State" (HISS) and similar will creep into our vocabulary) Step 4: refine search to something like "cardiac morphology myocardial injury marathon amateur"; throw on "biological indicators", "creatine kinase" Step 5: rinse, repeat, and read deeper into some of the studies. Anyways, "Long-term high-intensity endurance exercise caused some damage to the hearts of amateur runners." and your cardiologist said the same. Or you can believe some rando giving medical advice on this forum. And honestly, I'm beyond irritated at the consistently bad takes on medicine, biomedicine, and exercise on YC HN. |