The term can refer to any cardiovascular workout (e.g. cycling, running, rowing, etc.) that involves brief bouts at near-maximum exertion interspersed with periods of lower-intensity activity.
Interval training is often practiced by long distance runners (800 meters and above). Sprinters and footballers have also been known to use this type of training.
No matter what mode of exercise you choose (treadmill, outdoor walking or running, swimming, elliptical, cycling), every workout can be different and the variety within each session keeps things fresh and fun. If you are sick of walking on the treadmill for an hour each day, adding intervals can jumpstart your body out of its low-intensity cardio rut.High-intensity interval training has also been shown to improve athletic performance. For already well-trained athletes, improvements in performance become difficult to attain and increases in training volume can potentially yield no improvements. Previous research would suggest that, for athletes who are already trained, improvements in endurance performance can be achieved through high-intensity interval training
You'll know when you’ve reach an anaerobic intensity because you'll start feeling a burn in your working muscles. Adding some anaerobic intervals to your workouts will usually give you better results. But since they are more demanding, anaerobic intervals should be shorter and accompanied by longer recovery intervals. As your fitness level improves, both the length of the high-intensity intervals, and the amount of work you can handle during them, will increase.
During a complete workout, you go through five to ten cycles of high and low intensity. Depending on your fitness needs, you can vary the length of each interval, number of intervals, distance, and speed
.
- Cycle or run at high intensity (determined by your fitness level and/or your heart rate monitor) for one minute. Follow this with three minutes of lighter cycling or running. Repeat this cycle ten times for a 40-minute workout.
- If you are walking outside, walk as fast as you can for one block, then an easier pace for two blocks.
- If you are on the elliptical machine, increase your speed and/or incline for the first minute of a song, and slow down on a flatter grade for the remainder of the song.
- If you are up for the challenge, utilize a one-to-one ratio, with three minutes at high intensity followed by three minutes at lower intensity.
Super-efficient HIIT is the ideal workout for a busy schedule—whether you want to squeeze in a workout during your lunch break or to get in shape for a fast-approaching event. Research shows you can achieve more progress in a mere 15 minutes of interval training (done three times a week) than the girl jogging on the treadmill for an hour. And according to a 2011 study presented at the American College of Sports Medicine Annual Meeting, just 2 weeks of high-intensity intervals improves your aerobic capacity as much as 6 to 8 weeks of endurance training.
Not only do you burn more calories during HIIT workouts, but the effect of all that intense exertion kicks your body's repair cycle into hyperdrive. That means you burn more fat and calories in the 24 hours after a HIIT workout than you do after
Most people aren't used to pushing into the anaerobic zone (that lovely place where you can't breathe and you feel like your heart is trying to jump out of your chest). But in this case, extreme training produces extreme results. that after 8 weeks of doing HIIT workouts.
Running,
biking, jump roping, and rowing all work great for HIIT, but you don't
need any equipment to get it done. High knees, fast feet, or anything
plyometric like jumping lunges work just as well to get your heart rate up fast. In fact, some equipment like dumbbells can make HIIT less effective because you want the focus to be on pushing your heart to its max, not your biceps.
Anyone who has been on a diet knows that it's hard to not lose muscle mass
along with fat. While steady state cardio seems to encourage muscle
loss, studies show that both weight training and HIIT workouts allow
dieters to preserve their hard-earned muscles while ensuring most of the
weight lost comes from fat stores. Win/win!!!!
In addition to increased fat burning and more muscle preserved, HIIT stimulates production of your human growth hormone (HGH) by up to 450 percent
during the 24 hours after you finish your workout. This is great news
since HGH is not only responsible for increased caloric burn but also
slows down the aging process, making you younger both inside and out!
You
can do it in a boat, you can do it with a goat. You can do it here or
there, you can do it anywhere! Dr. Seuss would have loved HIIT. Since
it's such a simple concept—go at maximum effort for a short period of
time followed by a recovery period and repeat—you can adapt it to
whatever time and space constraints you have.
This
is not a workout you can do while reading a magazine or chatting with
your friend. Because it's so short, you will be working hard the whole
time. The trade-off is this format offers seasoned exercisers a new
challenge and new exercisers a quick way to see results. You may be in
pain, you may be sucking wind, but you definitely won't be bored!