Ap bio- blood pressure?
Why do an athlete must exercise harder or longer to achieve a manximum heart rate than a person who is not as physiacally fit ?
Answers:
I'll give you a reason. Keep in mind that near are many.
Athletes, due to training, have a higher cardiac output than non-athletes. They enjoy a larger stroke volume (how much blood the left ventricle pumps to the body per beat), which means that they can deliver more oxygen to their muscles per beat than non-athletes. Therefore, an athlete's heart rate can be lower during hum.
Theoretically speaking the max. HR is 220-Age. In this case, because the athlete is fit, they have to work harder or longer to fatigue. Thus, only by more exercise will they make Max. HR.
Maximum heart rate is just a intangible number. The real issue is cardiac output (the amount of blood the heart can pump out in a given time). There's a formula, CO = HR x SV (cardiac output equals heart rate times stroke volume). Stroke volume is the amount of blood pumped out in any one heartbeat. It depends on the size as powerfully as the compliance (basically the 'stretchiness' and 'tone') of the heart.
Athletes tend to have larger, stronger, more compliant hearts--the heart, after all, is a muscle. So the overall reason that their heart rate doesn't move about up as much is not that they can't increase it, but that they don't need to because their stroke volume is large enough that their cardiac output is sufficient at a much lower heart rate.
Hope that isn't too much slang. ;-)
they (athletes) are more physically fit, so it takes longer to get their heart rate up-than a less fit character who tires more easily
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Answers:
I'll give you a reason. Keep in mind that near are many.
Athletes, due to training, have a higher cardiac output than non-athletes. They enjoy a larger stroke volume (how much blood the left ventricle pumps to the body per beat), which means that they can deliver more oxygen to their muscles per beat than non-athletes. Therefore, an athlete's heart rate can be lower during hum.
Theoretically speaking the max. HR is 220-Age. In this case, because the athlete is fit, they have to work harder or longer to fatigue. Thus, only by more exercise will they make Max. HR.
Maximum heart rate is just a intangible number. The real issue is cardiac output (the amount of blood the heart can pump out in a given time). There's a formula, CO = HR x SV (cardiac output equals heart rate times stroke volume). Stroke volume is the amount of blood pumped out in any one heartbeat. It depends on the size as powerfully as the compliance (basically the 'stretchiness' and 'tone') of the heart.
Athletes tend to have larger, stronger, more compliant hearts--the heart, after all, is a muscle. So the overall reason that their heart rate doesn't move about up as much is not that they can't increase it, but that they don't need to because their stroke volume is large enough that their cardiac output is sufficient at a much lower heart rate.
Hope that isn't too much slang. ;-)
they (athletes) are more physically fit, so it takes longer to get their heart rate up-than a less fit character who tires more easily
Related Questions:
Is taking 20 cold medication pill enought to murder yourself?
im not plan on kill myself, iw as womdering if i take like 20 pills of cold medication, is it plenty to kill myself As some others said, yeah, but it won't be as fast as you regard it will. Damage to the liver and/or kidneys can occur, along with other...
I am giving underwater theory test but my eyesight have crossed the parameter of -2.5 so can i still hope to be special.?
i am thinking of laser operation to correct eyesight wil this work. If you get it corrected you will be fine.