What is heart rate

What is heart rate

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Heart rate is, the number of heart beats per unit time, usually per minute. The heart rate is based on the number of contractions of the ventricles (the lower chambers of the heart). ChaCha [ Source: http://www.chacha.com/question/what-is-heart-rate ]
More Answers to “What is heart rate
The heart rate is defined as the number of times the heart beats per minute. The heart beats when the lower chambers of the heart, the ventricles contract. This contraction causes blood to pulse…
http://www.ehow.com/guide_10-p769-health.html
Heart rate is the number of times the heart beats per minute. It is usually recorded as bpm, which stands for “beats per minute”.
http://wiki.answers.com/Q/What_is_a_heart_rate
Heart rate is defined as the number of heart contractions per minute and in this Incremental exercise experiment heart rate will be used to define how hard the heart is working per minute
http://www.doingmyhomework.com/show_essay/Sports-H-46183.html

Related Questions Answered on Y!Answers

What is the normal blood pressure and heart rate for a 15 year old girl?
Q: i am 15 i am 5’2″ and weigh 100 lbs. i just took my blood pressure and it said 102/82 with a heart rate of 72. is it high or low. i’m concerned because i’ve been having continuous dizziness spells and headaches and today i was a little bit nauseous. i got a blood test today but im pretty worried. my doctor said i probably have anemia but i’m afraid it could be something worse.
A: That is a totally normal, ok, and healthy blood pressure and heart rate! 120/80 is the ideal blood pressure for ADULTS, but most people don’t realize that the majority of people do not actually have this blood pressure, and they have their own normal. I’m 21 and my blood pressure is typically in the high 90s/high 60s to low 110s/70s. My heart rate is usually a bit faster (resting is typically around 90-100), but that is MY normal, and how my body operates. So your blood pressure and heart rate are probably normal for you. These are good charts for pediatric BPshttp://www.nhlbi.nih.gov/guidelines/hypertension/child_tbl.pdfhttp://www.nhlbi.nih.gov/health/public/heart/hbp/bp_child_pocket/bp_child_pocket.pdfbut everything is subjective. For example, Lance Armstrong’s resting heart rate is 32. That could be potentially dangerously low for someone else, but normal for him.
is my heart rate healthy or what?
Q: so sometimes my heart is beating softly, but other times its is beating hard, sometimes slower, sometimes faster. is this normal or not?
A: Your question is very vague for a reply.However it may please be noted that basically a healthy heart rate cannot be felt by the body; and when once it is felt or bothers means it requires an immediate attention. Hence, in view of the vital nature of the organ involved, you may consult your cardiologist and go for an ECG basically under his advice to fix/exclude any organic cause etc.And if the ECG declared WNL(within normal limits) it may be treated as functional and have necessary advice/treatment please.
How does your resting heart rate translate into the amount of calories your body uses?
Q: I understand that a higher heart rate means a higher workload for your heart. I have a fairly low resting heart rate (mid 50’s) and am active, so how does this compare with someone who is less active with a higher resting heart rate with the same weight/height ratio? Thanks for any input!
A: Nearly every time you pick up a magazine or newspaper these days, you see advertisements for products that supposedly raise your metabolism. Whether they’re trying to sell you exercise equipment or food supplements, these ads claim that the products turn up the heat in your body so you burn more calories even when you’re not exercising. Sounds logical enough, but is it true?No question, in today’s fitness world people are mad for everything metabolic. But what exactly is this thing called “metabolism” and how much do we really know about raising it? For example, what’s better for the boost- weight training or aerobics? And is it true that eating hot chili peppers fires up your rate of fat combustion? Here are some burning questions about burning calories, plus some answers that are sure to surprise you.What does “metabolism” mean?Your metabolism is the sum of processes involving energy production- specifically, the chemical changes in your living cells by which energy is provided for your vital processes and activities and new material is assimilated. You can also think about your metabolism as the number of calories you’re burning at any given moment, whether you’re watching “Seinfeld” or pumping away on the StairMaster. Naturally, your metabolic rate- the rate of energy production and expenditure- will be higher when you’re exercising than when you’re crashed on the couch.Will aerobic exercise raise your resting metabolic rate?Several studies have failed to show any significant increase in resting metabolic rate due to aerobic workouts. One, for instance, found that men who jogged three times a week for 30 minutes at about 70 to 80 percent of their maximum heart rate did not increase their RMR. But they were certainly burning lots of calories on the run.What is “afterburn”?This term refers to the fact that your metabolic rate stays elevated after you do any kind of exercise. But the effect varies greatly depending on the type of workout, how hard and, to some extent, how long you just exercised.In a recent study, Christopher Melby, Dr.P.H., associate professor of nutritional science at Colorado State University in Fort Collins, and his colleagues monitored seven men who did a killer, 90-minute weight workout- six sets of 10 exercises with very little rest between sets. Two hours after the workout, their metabolic rate was 11 percent higher than normal. When the subjects were measured the next morning, 15 hours after the workout, their metabolism was still elevated by a hefty 9 percent, which could translate into as much as 150 extra calories burned.In another study, Melby cut the workout down to five sets of each exercise and let the subjects rest longer between sets. The subjects’ post-exercise metabolic rate also was 11 percent elevated after two hours; but by the next morning, the increase had dropped to less than 5 percent. “What that indicates is, the post-exercise metabolic rate [of a weight-training workout] is a function of exercise intensity primarily, and to some extent duration,” Melby says. The numbers in both studies were impressive, but the workouts were far longer and more strenuous than most people have the time, strength, stamina and motivation to maintain. Melby believes that the concept of afterburn gets too much hype. After all, the calories you burn post-exercise are negligible compared to what you burn during the workout.Does aerobic exercise also give you an afterburn?Yes, but it probably doesn’t last as long as the weight-training afterburn- unless you work out intensely or do interval training. Most studies have found that mild to moderate exercise elevates metabolic rate for only a few minutes to a few hours. If, for instance, you jogged at 70 percent of your maximum heart rate for a half-hour, you probably wouldn’t experience an afterburn for more than an hour. “For most people it’ll be less than that,” Melby says, burning no more than 15 to 30 calories. On the other hand, highly trained athletes who can run for, say, 90 minutes at 75 percent of their maximum heart rate, might have significant afterburn for several hours. The bottom line: Focus on burning calories during your workout, not after.As for why strength training has more of an afterburn than moderate aerobic exercise, scientists aren’t sure. One possible explanation, Melby says, is that anaerobic exercise, such as weight training, might elevate levels of the hormone epinephrine, which stimulates metabolic rate. Another theory: The repair of microscopic tissue damage caused by weight lifting might expend more energy.What about aerobic interval training?Go for it. Afterburn seems to depend mainly on workout intensity (duration doesn’t have nearly as much effect). So if you do aerobics, interval training with alternate bursts of activity will get the best post-workout rise out of your metabolism. “If you did a number of short bouts, say on the treadmill or the bike, at 95 percent of your max, the afterburn would be significantly greater than if you used the same number of calories, or even more, doing one longer, lower-intensity bout at 50 or 70 percent of your max,” says Melby. “Your metabolic rate would be elevated for a longer period at a higher magnitude.”So there is truth in advertising. Some kinds of equipment can rev up your body’s calorie-burning rate; just be sure to do high-intensity interval training for the best metabolic results.Is there any way to lower metabolism?Yes. Go on a very low-calorie diet. Your body will sense that it is being starved and will fight back by slowing down. “If you don’t get enough calories, your metabolic rate can go down profoundly, says Callaway. Severely anorexic women, he says, burn 30 to 40 percent fewer calories a day- sometimes 50 percent- than women who eat normally. (In other words, an anorexic who takes in only 200-300 calories a day uses it up much more slowly that her normal counterpart.) It’s not clear how much of a calorie deficit triggers a drop in RMR- there’s probably a continuum. But, says Callaway, you can get into trouble by consuming fewer calories than your RMR requires.Can’t you prevent your resting metabolism from dropping by exercising when you diet?Not necessarily, especially if you’re on a very low-calorie diet. Two late-breaking studies divided subjects into four groups: diet only, diet plus aerobic exercise, diet plus weight training, and diet plus aerobics and weight training. After many weeks, After many weeks, both studies found no significant weight loss among any of the groups. “When you add a lot of exercise on top of a marked caloric restriction, you’re not going to prevent resting metabolic rate from falling,” says Thomas A. Wadden, Ph.D., a psychology professor and director of the weight and eating disorders Program at the University of Pennsylvania School of Medicine in Philadelphia who conducted one of the studies.That doesn’t mean you should skip the exercise. To the contrary, you should diet and work out with moderation. In Wadden’s study where the diet was severe- 128 obese people ate only 925 calories a day for the first 16 weeks and 1,500 daily for the next 32- there were no significant differences in weight or body composition changes among the groups. (Both calorie amounts were severe for this population.)


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