Stroke volume in athletes

Common Questions and Answers about Stroke volume in athletes


1124887 tn?1313754891 It all has to do with stroke volume. I think some of the gains in stroke volume that athletes get is attained through muscle stretch, from what I’ve read over the years. Again I'm thinking along the lines of "too much of a good thing".
1124887 tn?1313754891 So a parameter that increases volume will increase blood flow and the stroke volume is increased with an increase in contractility. Higher EF stronger contractility. The converse is true a reduction in volume the lower the contractility and lower stroke volume. Your question seems to be addressing the control factors to maintain integrity of a balance of blood flow between the left and right side of the heart....
Avatar m tn 8cm systolic diameter, 22% FS, 117ml diastolic volume, 56.2 ml systolic volume, EF% 52, Stroke Volume 60.8, LVPW thickness .82cm, IVP thickness .88 So, my questions are the following: -Can you have some form of systolic dysfunction without ending up with an enlarged heart or an EF% lower than 50? -Could I have systolic dysfunction that is being controlled by my exercise, which is why I have been able to have an EF% in the low 50’s and no structural remodeling?
Avatar n tn Your heart is slower than the average, probably due to fitness. You will have a larger stroke volume if this is the case, which is why it can beat slower. Basically it pumps a higher volume of blood with each beat than the average person. When you stand, you lose a lot of your blood into you legs, due to gravity, and you have to wait for the next beat to start getting blood back up to the brain.
Avatar n tn The heart is a muscle, and like all muscles in our body, when worked hard they build mass. When the heart enlarges, it can cause problems with the efficiency factor of how your heart expels blood from one chamber of the heart to the next. If you received that information, I'm guessing you had a procedure that made that determination. You are entitled to receive a written procedure report.
Avatar n tn _ Dear Pat, thank you for your question. The formula for stroke volume is cardiac output (in cc's/min) / heart rate (per min). The normal range for stroke volume is 50-70 cc's and doesn't vary much with age. Stroke volume refers to the amount of blood ejected from the heart with each heartbeat. The only way to directly measure stroke volume is through a cardiac catheterization where the cardiac output can be directly measured with a catheter in the heart.
Avatar n tn You can't measure stroke volume with the heart rate. Stroke volume is the amount of blood that your left ventricle pumps out with each heart beat. If you multiply the stroke volume by the heart rate you get your cardiac output.
Avatar n tn Posted By Pat on August 20, 1998 at 09:43:30: I had a cardiopulmonary exercise stress test and went back for the results, I had gotten info from you re the VO2max numbers so I could try to understand what the doctor would tell me, instead the doctor said they measured the stroke volume and mine was "16" which he thought was low, what does this 16 mean, what would an average number be for a 55 year old female?
Avatar n tn Ultimately, ventricular remodeling may result in diminished contractile (systolic) function and reduced stroke volume". To Jim: I agree with Jon. Finding the underlying cause and successfully treating will/can reverse remodeling (depending on the cause). A diseased hypertrophied heart tend to relax more slowly after contraction (slower recovery), reduces filling space, and develop less power, whereas the athletic heart is capable of performing normally.
Avatar n tn The only way I know of to lower resting heartrate is to strengthen your heart through exercise (it improves the efficiency of your muscles including the heart and also increases the stroke volume of the heart so that you pump more blood with every beat) but I don't know how issues like age, heart disease etc affect that process.
Avatar m tn t just make a blanket interpretation of the LVEF based on the number. For all we know, I bet when you run your stroke volume goes much higher than someone who leads a sedentary lifestyle. Studies have shown that in hyper trained athletes, LVEF can become lower or higher. A piece I've read that makes sense is that when you compare athletes to sedentary people, the at-rest *stroke volume* will usually measure the same as sedentary people when studied.
Avatar n tn For a more definitive measurement a right heart catheterization is necessary because the exercise echocardiogram has limitations, namely the inability to measure left-sided filling pressures and cardiac output (stroke volume) that is in part needed for evaluation.....
Avatar n tn i had a echocardiogam which shows that my stroke volume is 47 ml is it a normal value or it is a sign of heart failure.all other things are normal in my echo. my ejection fraction is 61.4%.
Avatar m tn m not sure why EF remains at 30%. It seems to me an increase in stroke volume would increase EF? The formula is blood volume in the LV at end of diastole minus volume at end of systole divided by LV end diastole. As your record indicates there is an increase of stroke volume! ____________________________________________________________________ QUOTE: This time a remark is added-" AV sclerosis+". The cardiologist who did echo says it is not serious.
Avatar f tn In fact you may have heard that athletes have low heart rates.. Their high ef is what allows this.
Avatar n tn The calulation for EF is volume of blood in the left ventricle at systole (pumping) phase. Subtract the volume left in the ventricle after diastolic (filling) phase. Then divide the volume of blood during systole for a fraction...that would be EF. Your EF idicates you have a normal pumping heart. Normal is 50 to 70%. Do you have any heart valve regurgitation (leakage)?
Avatar m tn the same MAP regardless of if heart rate is 100 and stroke volume 100 ml, or the heart rate is 50 and stroke volume 200 ml, the same is not true for pulse pressure (sys minus dia). While the first might have a blood pressure of 140/90 and a MAP of 105 mmHg, the latter may have a blood pressure of 180/70 and the same MAP. Everyone have their unique stroke volume:pulse pressure ratio, depending on arterial compliance/stiffness. In general, a lower number may indicate higher arterial stiffness.
Avatar f tn LV is still mildy dilated, but heart is still working fine (EF 65%ish) and particularly stroke volume is high. Conclusion, very likely Athlete's Heart, but one more u/s to be done in a year's time to be absolutely sure. Unfortunately I did not see my own cardiologist for the results, but someone from his team, who didn't really know my history and thus I didn't get to ask all my questions.