CHICAGO - Fast-fitness guru Minna Lessig knows exercise purists initially mocked the title of her "1 Minute Workout" DVD, which targets busy people with short attention spans. One minute does, after all, sound like a joke.
But Lessig is serious. And her belief that 60 measly seconds can make a positive difference in our health is gaining support from both time-crunched gym-phobes and mounting scientific research.
Several new studies show that shorter bursts of energy - just a few minutes a day - can provide the same benefits as a longer workout session. And a growing body of literature suggests that the cumulative amount of exercise we get during the day and week is just as important as continuous minutes.
There are a few major catches, of course. If the short workouts aren't intense and uncomfortable, the benefit isn't as great. And despite the gimmicky title, even Lessig's unique program, which mixes and matches different minute-long exercises, doesn't let you off the hook after one minute.
Instead, Lessig recommends a bare minimum of three to four minutes for a full-body workout, in addition to a three-minute warm-up and three-minute cool-down, for a total of about 10 minutes.
Still, the notion that less can be more on the cardio front is wildly popular among people such as Kat Carney, of Durham, N.C., who doesn't have the time or the motivation for longer workouts.
Carney, who lost 90 pounds six years ago, has kept it off by doing 10- to 12-minute workouts several times a day, six days a week, and considers Lessig's DVD one of her favorites. She also has a treadmill next to her computer in her home office and keeps 10- to 12-minute blocks of music on her iPod.
"During the day when I'm working, I'll take a `workout break' and walk for 10 to 12 minutes," said Carney, creator of a Web site (theweighwewere.com) that collects weight-loss success stories. "Other times, after I'm warmed up, I'll do a few minutes of squats and/or lunges. Or another session, some upper-body work."
Quickie workouts can help relieve stress, refocus your energy, increase blood flow, provide a break from work and engage less-used muscles, said Mari Croz, a health and fitness professional at Central Michigan University's Central Health Improvement Facility.
But while elite athletes commonly use interval training and short workout bursts, the value for average exercisers has been debated for years.
Recently, the pendulum has swung in favor of fast fitness, based partly on work by researchers such as Martin Gibala, an associate professor of kinesiology at Ontario's McMaster University.
Last year Gibala's team found a few minutes of high-intensity exercise could be as effective as an hour of moderate activity.
This year Gibala compared sprint versus endurance training and found that a few minutes of vigorous exercise per day can produce the same results as traditional endurance training, according to the research published last month in the Journal of Physiology.
In another study that looked at the value of quickie workouts, Indiana University researchers recently found that three or four short, brisk walks throughout the day can be more helpful to people watching their blood pressure than one continuous bout of exercise.
"The biggest problem for most people is they don't have time," said Janet Wallace, a kinesiology professor at the IU School of Health and the lead author of the walking study. "Four 10-minute walks is ideal," she said, for people who think they don't have time to get to the gym and work out for 40 minutes.
Still, although quickie workouts are starting to show some benefits, many experts recommend against making them a habit. "For cardiovascular improvements or weight loss, a few minutes is not enough time," said Croz of Central Michigan University.
Unfortunately, no one is certain what the optimal time is. Cyndi Targosz, author of "Ten Minute Tone-Ups for Dummies" (Wiley, $19.95), says 10 minutes gives you just enough time to do enough exercises and repetitions while working your major muscles, "as long as you use the correct technique with the right combination of moves."
But exercise physiologist Geralyn Coopersmith says fitness is like a drug: Each person needs a different dose.
"It truly depends on the person, their current fitness levels, their individual needs and goals," said Coopersmith, author of "Fit + Female" (Wiley, $16.95). "It also depends on what type of exercise we're talking about. Five minutes of core training each day goes a long way. Five minutes of cardio does not, unless you are doing it at least four to five or more times in the course of the day."
The lowest dose of aerobic exercise you need to see health improvements is equivalent to walking or jogging 12 miles per week or about a 17- or 18-minute session each day, according to Duke University researcher Brian Duscha. This doesn't include a warm-up or cool-down.
The optimal time also depends on whether you're trying to burn calories or prevent a heart attack, Duscha said. "In theory, if all you want to do is burn (calories); (time) doesn't matter.
But if you want to reduce cardiovascular risk factors like blood pressure, cholesterol, visceral fat and blood vessel health, continuous exercise would be preferred."
Still, Duscha agrees with the fast-fitness philosophers on one point: "Anything is better than nothing."
Lessig, a personal trainer, fitness supermodel and former Ms. Fitness USA, simply believes every minute counts. If you have more time to spend on exercise, by all means, do it.
"Shorter duration isn't necessarily better," she said. "But it is realistic in today's lifestyle."
Posted by Lose Weight at 10:22 AM
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