gym

The One Minute Exercise Regimen

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The New York Times reports on the benefits of high-intensity interval training, in which short bursts of very intense activity are followed by short period of recovery:

For years, the American Heart Association and other organizations have recommended that people complete 30 minutes or more of continuous, moderate-intensity exercise, such as a brisk walk, five times a week, for overall good health.

But millions of Americans don’t engage in that much moderate exercise, if they complete any at all. Asked why, a majority of respondents, in survey after survey, say, “I don’t have time.”

Intervals, however, require little time. They are, by definition, short. But whether most people can tolerate intervals, and whether, in turn, intervals provide the same health and fitness benefits as longer, more moderate endurance exercise are issues that haven’t been much investigated.

Several years ago, the McMasters scientists did test a punishing workout, known as high-intensity interval training, or HIIT, that involved 30 seconds of all-out effort at 100 percent of a person’s maximum heart rate. After six weeks, these lacerating HIIT sessions produced similar physiological changesin the leg muscles of young men as multiple, hour-long sessions per week of steady cycling, even though the HIIT workouts involved about 90 percent less exercise time.

Recognizing, however, that few of us willingly can or will practice such straining all-out effort, the researchers also developed a gentler but still chronologically abbreviated form of HIIT. This modified routine involved one minute of strenuous effort, at about 90 percent of a person’s maximum heart rate (which most of us can estimate, very roughly, by subtracting our age from 220), followed by one minute of easy recovery. The effort and recovery are repeated 10 times, for a total of 20 minutes.

Despite the small time commitment of this modified HIIT program, after several weeks of practicing it, both the unfit volunteers and the cardiac patients showed significant improvements in their health and fitness.

The results, published in a recent review of HIIT-related research, were especially remarkable in the cardiac patients. They showed “significant improvements” in the functioning of their blood vessels and heart, said Maureen MacDonald, an associate professor of kinesiology at McMaster who is leading the ongoing experiment.

This is very interesting research and high-intensity interval training is something I’d be willing to try in the gym.

Tips for Conquering the Gym

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If you’ve made it a resolution to hit the gym in 2012, how do you stay motivated and go through with your resolution? Jason Gay provides some fun, humorous tips:

1. A gym is not designed to make you feel instantly better about yourself. If a gym wanted to make you feel instantly better about yourself, it would be a bar.

2. Give yourself a goal. Maybe you want to lose 10 pounds. Maybe you want to quarterback the New York Jets into the playoffs. But be warned: Losing 10 pounds is hard.

3. Develop a gym routine. Try to go at least three times a week. Do a mix of strength training and cardiovascular conditioning. After the third week, stop carrying around that satchel of fresh-baked chocolate chip cookies.

4. No one in the history of gyms has ever lost a pound while reading The New Yorker and slowly pedaling a recumbent bicycle. No one.

5. Bring your iPod. Don’t borrow the disgusting gym headphones, or use the sad plastic radio attachment on the treadmill, which always sounds like it’s playing Kenny Loggins from a sewer.

6. Don’t fall for gimmicks. The only tried-and-true method to lose 10 pounds in 48 hours is food poisoning.

7. Yes, every gym has an overenthusiastic spinning instructor who hasn’t bought a record since “Walking on Sunshine.”

8. There’s also the Strange Guy Who is Always at the Gym. Just when you think he isn’t here today…there he is, lurking by the barbells.

9. “Great job!” is trainer-speak for “It’s not polite for me to laugh at you.”

10. Beware a hip gym with a Wilco step class.

11. Gyms have two types of members: Members who wipe down the machines after using them, and the worst people in the universe.

Jason writes: “Exercise, like dark chocolate and office meetings that suddenly get canceled, is a proven pathway to nirvana.” Read his entire 27-item list here.

Working Out at the Office

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This short piece in The New York Times makes me wonder if the practice of installing exercise equipment (and allowing workers to use it) at the office can become more prevalent.

First, a dire warning:

Every day, millions of American workers do something dangerous to their health: they sit down.

Sitting for long periods is hard on the body. It strains the back and causes the muscles to become slack. It slows the processes that metabolize calories, increasing the risk of obesity, diabetes, heart disease and some cancers.

People might think they are protecting themselves from such problems if they exercise outside of working hours. And employers may pat themselves on the back if they offer their workers subsidized gym memberships. But regular exercise doesn’t entirely make up for the shutdown of chemical processes that occurs during long periods of sitting, research has shown.

The Times profiles Salo, a financial staffing firm in Minneapolis, which:

[E]ncourages walking meetings. In a conference room, Salo has set up four treadmill desks, where a height-adjustable working surface is placed above the treadmill track. The desks face one another, so that people can walk and take care of business at the same time.

The results seem impressive:

For six months, the activities of 18 employees — including Mr. Dexheimer — were monitored by a device on their belts. With the help of equipment like the treadmill desks and wireless headsets that permit walking while talking on the phone, the employees collectively lost more than 150 pounds, most of it in body fat. Their cholesterol and triglyceride levels also showed a collective decline. Mr. Dexheimer said he lost 25 pounds, and has kept the weight off.

How far do I have to walk to get my employer on board?