Questa pagina è stata tradotta automaticamente. In caso di discrepanza, fa fede la versione inglese.

🚴

Centro di ricerca

Esercizio, Atleti e Invecchiamento

Scienza della performance, adattamento cardiaco negli atleti, i record mondiali di Peter e l'orologio dell'invecchiamento cardiovascolare.

35 Articoli
4 Filtri
4 Formati Ciascuno
Scopri perché il rischio di malattie cardiache aumenta con l'età. Scopri come l'irrigidimento arterioso, le cellule zombie e il colesterolo accumulato influiscono sul tuo cuore.
Learn about the causes, risk factors, and screening of sudden cardiac death in young athletes. Discover how rapid AED use and emergency plans save lives.
Can extreme fitness hide heart disease? Discover why lifelong endurance athletes develop silent coronary plaque and why lowering ApoB may protect them
If you are a competitive endurance athlete over the age of 65, you are likely living through a frustrating biological mystery. You still have the drive. You are still putting in the long miles on your bike or hitting the trail for your morning run. But despite your hard work, your body seems to be changing in ways that don't feel fair.
For a long time, most people believed that the only way to help their heart was to do "cardio." We were told to go for walks, run on treadmills, or ride bikes. These are great habits, but they are only part of the story. Think of your body like a car. Doing aerobic exercise (cardio) is like washing the car and keeping the paint shiny. It looks good and helps the car last, but if you never open the hood to check the engine, the car won't run forever.
Imagine a high-end sports car. It is sleek, shiny, and built to win the toughest races. On the outside, it looks perfect. People stop and stare when it drives by because it looks like it could go 200 miles per hour. But deep inside the engine, there is a hidden problem. The fuel line - the pipe that carries gas to the engine - is almost completely plugged with gunk. The car can still drive, but it cannot reach its top speed. If that gunk keeps building up, the engine will eventually stop working altogether.
Imagine you are running on your favorite trail. You are breathing hard, and your legs feel heavy. Suddenly, a runner with gray hair and a steady stride zips right past you. They look like they could keep that pace all day. It is a common sight today - "master athletes" in their 60s and 70s who are faster and fitter than people half their age.
Imagine a high-end sports car. It is sleek, shiny, and built to handle the toughest races. On the outside, it looks absolutely perfect. But deep inside the engine, there is a tiny fuel line that has started to rust. Normally, a "check engine" light would flash on the dashboard to warn the driver that something is wrong. However, in this car, someone has placed a thick piece of black tape over the light. The driver keeps pushing the car to its limits, feeling invincible, totally unaware that the engine is struggling. Suddenly - at 100 miles per hour - the engine stalls.
In questa intervista, un ciclista d'élite e ricercatore con un dottorato racconta la scoperta di una grave coronaropatia nonostante apparisse eccezionalmente in salute. Quello che è iniziato come un piccolo calo nella potenza di pedalata ha portato a un angiogramma invasivo, a uno stent e alla scoperta di molteplici occlusioni arteriose.
Molte persone provano una profonda paura quando sentono le parole "arterie ostruite". Spesso pensiamo al nostro cuore come all'impianto idraulico di una vecchia casa. Immaginiamo che, col tempo, i tubi si riempiano di una melma densa. In questa semplice visione, se i tubi sono liberi, si è sani. Se i tubi sono pieni di melma, si è nei guai fino al collo. Diamo per scontato che le persone che fanno molto movimento avranno i tubi più puliti in assoluto.
Imagine your body is a giant, bustling city. For the city to work, it needs one massive main water pipe to carry energy and supplies to every single house. In your body, that "water main" is a giant tube called the aorta. Doctors call it the "Great Vessel" because it is the biggest and most important power line in your system.
For decades, doctors and runners shared a comfortable belief: if you ran marathons, your heart was bulletproof. This was known as the "Bassler hypothesis," the idea that finishing a 26-mile race gave you a "get out of jail free" card against heart disease. However, as modern heart scans improved, doctors were met with a shock. The very people who were the fittest on the planet—lifelong marathoners and cyclists—often showed more "rust" or buildup in their heart pipes (arteries) than people who sat on the couch.
La maggior parte delle persone pensa che esista una dieta perfetta per una vita lunga. Ma la scienza emergente suggerisce qualcosa di molto più interessante: le regole di un'alimentazione sana in realtà cambiano con l'età. Ciò che ti protegge a 45 anni potrebbe non proteggerti a 85. La longevità non consiste nell'attenersi allo stesso piano nutrizionale per sempre, ma nell'adattarsi alla biologia mutevole del proprio corpo. E secondo le nuove ricerche, l'età di 65 anni sembra essere un importante punto di svolta.
Il gancio: decondizionamento vs. invecchiamento. Molti di noi considerano il declino del cuore come un inevitabile scivolamento verso l'obsolescenza, ma la realtà è più ottimista. Il cuore non è una bomba a orologeria in decomposizione; è un muscolo adattabile che attende il giusto stimolo. Il celebre studio di Dallas sul riposo a letto e l'allenamento ha dimostrato che appena 20 giorni di inattività totale hanno fatto invecchiare i cuori di giovani di 20 anni di oltre 30 anni cronologici.
The landscape of preventive cardiology has undergone a profound transformation with the emergence of subclinical imaging, specifically the quantification of coronary artery calcium (CAC). For decades, cardiovascular risk assessment relied almost exclusively on probabilistic models derived from population-wide observational data.
What Peter Megdal’s World Hour Record Reveals About Aging, Fitness, and Cardiovascular Recovery For decades, human athletic performance was assumed to follow a largely linear decline beginning in early adulthood. Conventional physiological models predicted that the cardiovascular system, pulmonary capacity, and skeletal muscle function would steadily deteriorate as cellular senescence accumulated.
If you’re an endurance athlete, you’ve probably had this moment: your fitness is undeniable—resting heart rate is low, VO₂ is high, your training log looks like a work of art—and then a blood test shows LDL (“bad cholesterol”) is higher than expected. That can feel unfair. It can also trigger a very specific fear: “If I take a statin, will I lose performance?”
Peter Megdal, PhD, was a man who lived and breathed health. He was not just a regular guy who went to the gym. He was a world-record-holding cyclist. His legs were like steel. His lungs could breathe in huge amounts of air. He looked like the picture of perfect health. If you saw him riding his bike, you would think he would live to be one hundred years old.
The heat inside the velodrome rose like a living thing, swelling from seventy-five to eighty degrees Fahrenheit as the desert afternoon pressed against the curved walls. From beneath the wooden track came the faint, steady breathing of the air-handling system—a mechanical sigh under the foundation that vibrated faintly through the frame of my bicycle. Six thousand feet above sea level, in the thin air of Aguascalientes, Mexico, I began to ride.
It's the prestige metric on every fitness watch and a key benchmark for vitality. But does a high VO₂ max actually make you live longer? Or is it just a sign that you're already doing the right things? As a medical engineer (PhD) and lifelong athlete, I've studied the biology of performance for decades. The evidence is compelling, but it's also nuanced. Let's unpack the science: Correlation vs. Causation.
Le trasformazioni della salute iniziano spesso con un campanello d'allarme e per Peter Megdal quel richiamo è arrivato dal suo stesso cuore. Dopo aver ricevuto una diagnosi che lo ha costretto a fare i conti con le condizioni della sua salute, Peter ha iniziato a mettere in discussione tutto ciò che pensava di sapere su cibo, scienza e benessere. Quello che è iniziato come un tentativo personale di guarire il proprio cuore si è evoluto in una missione più profonda per aiutare gli altri a fare scelte informate e sostenibili per una vitalità duratura.
Can an elite athlete have heart disease? Short answer: yes. I’m a lifelong endurance cyclist—now 65 years old - with three national records and two world records. I once believed fitness was protection. Short answer: yes. I’m a lifelong endurance cyclist—now 65 years old—with three national records and two world records. I once believed fitness was protection. But heart disease doesn’t care how fit you are. This is how I went from five blocked arteries to another world record—and what athletes can do to protect their hearts.
What do people on social media mean by “ketosis,” and does it automatically mean “healthier”? Ketosis simply means your blood ketones (often β-hydroxybutyrate, βHB) are elevated because carbohydrate availability is low (fasting, very-low-carb diets) or because you ingested ketones.
Atherosclerosis is a chronic, progressive vascular condition traditionally managed by interventions aimed at slowing its advancement.1 The measurable reversal of this condition—defined as structural regression—is the highest therapeutic outcome in cardiovascular disease management.2 Regression is evidenced angiographically by an increase in Minimal Lumen Diameter (MLD) or a decrease in Percent Diameter Stenosis ( %DS ).
We all aspire to be winners, but what does it truly mean to be a winner? It’s often defined as someone who places first in a race or excels in a competition. However, winning can encompass much more than that. After a week of racing at the Masters National Championships in Milwaukee, Wisconsin, I believe I emerged as a winner with finishes of 2nd, 14th, and 5th place in various events organized by USA Cycling.
Q: Are endurance athletes really at higher risk for atrial fibrillation? A: Yes. Atrial fibrillation (AF) is common in the general population, with a lifetime risk of roughly 1 in 4 adults.¹ While moderate exercise protects cardiovascular health, long-term, high-volume endurance training is associated with significantly higher AF rates. Meta-analyses show endurance athletes have about 2.5–3.6× higher odds of AF than non-athletes.
Meet the "Masters Athlete." This is a person over age 50 who feels like they are in the prime of their life. They run long races, bike for hundreds of miles, and spend hours in the pool. To the outside world, they look like the picture of health. They have a slow, steady resting pulse and plenty of energy.
Il rischio di aterosclerosi aumenta con l'età? Sì. L'aterosclerosi è considerata una malattia dell'invecchiamento. La probabilità e la gravità dell'accumulo di placca nelle arterie aumentano con l'età, anche quando altri fattori di rischio come il fumo, il colesterolo alto o l'ipertensione sono sotto controllo.
Peter Megdal sets cycling world record Survivor of heart disease excels in shattering limits others may set for him. [Editor's note: The following article concludes coverage in The Dedham Times of the world record Peter Megdal of Dedham holds in men's cycling. He set the new mark for ages 60-64 of 47.43 kilometers (29.47 miles) traversed in one hour on Sept. 12 at the Bicentario Velodromo in Aguascalientes, Mexico.
Peter Megdal sets new world record in cycling by Scott Heald | The Dedham Times The Guinness Book of World Records contains some zany entries indeed. One of those, achieved four-plus decades ago by a well-regarded Dedhamite, Mike Weir, who would go on to become the town’s police chief, involved throwing a grape the longest distance into the mouth of another person.
Tuesday, September 12th, Peter Megdal broke the Mens age 60 – 64 world record for the hour. At the Bicentario Velodromo in Aguascalientes, Mexico, Peter completed 47.430 kilometers (29.47 miles) in an hour, old record was 47.360 kilometers set in 2021 by Jim McMnurray of New Zealand.
Three-time national record holder explains his approach to improving health by Scott Heald / The Dedham Times / January 13, 2023 A traditional Romanian proverb states, “A great ship asks for deep waters.” Perhaps anyone who attempts something objectively daunting, unafraid to pursue opportunities that may not be readily apparent, is the sort of person to whom the proverb alludes.
Everyone has goals; for some, it's just to get out of bed in the morning, and others may want to become astronauts and rocket to the moon or Mars. I have spent years trying to break a world record in cycling. The last four years have thrown curveballs at me- such as recovering from heart disease, a broken hip last year, and this year COVID! On September 27, 2022, I competed at the world cycling track championships in Carson, CA, to attempt a 2-kilometer world championship race. Unfortunately, I had a terrible race and, in the process, contracted COVID. I was probably infected at the time that I was racing, which could account for my poor performance. To make matters worse, I was also planning to attempt a world record in the hour time trial in Aguascalientes, Mexico on October 17th, just three weeks away. How could I do this after such a poor performance only three weeks earlier?!
After setting the para C5 national record in 2018, I set my goal to best the current world record for the 60+-year-old when I turned 60.
Training Didn’t Help. My name is Dr. Peter Megdal, and this is my story of curing heart disease. In 2010 I noticed a steep drop in my power output during races. Racing cyclists have power meters that are attached to our bikes so we can accurately measure how strong we are in training and competitions. I was 50 years old, and my coach and my friends all told me that this was because I was getting older, but I knew a 15% drop was pretty steep and not normal especially in just one or two years.
App di IA

Calcolatore del rischio cardiaco

Calcolatore educativo del rischio cardiaco basato sulla storia familiare con approfondimenti sul punteggio H, immissione visiva dell'albero genealogico e rapporti PDF condivisibili.

Leggi qui perché questa app è così importante.