- With Mayo Clinic physical medicine and rehabilitation specialist
Edward R. Laskowski, M.D.
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Edward R. Laskowski, M.D.
Edward R. Laskowski, M.D.
Dr. Edward Laskowski is certified by the American Board of Physical Medicine and Rehabilitation, including subspecialty certification in sports medicine, and is a fellow of the American College of Sports Medicine. He is co-director of the Mayo Clinic Sports Medicine Center and a professor at College of Medicine, Mayo Clinic.
He has been on the staff of Mayo Clinic since 1990 and specializes in sports medicine, fitness, strength training and stability training. He works with a multidisciplinary team of physical medicine, rehabilitation and orthopedic specialists, physical therapists, and sports psychologists.
Dr. Laskowski is an elite-level skier and an avid hiker, cyclist and climber. He approaches sports medicine from the perspective of a physician and an athlete.
In 2006, President George W. Bush appointed Dr. Laskowski to the President's Council on Physical Fitness and Sports, and he has received a Distinguished Service Award from the Department of Health and Human Services for his contribution to the Council.
Dr. Laskowski was a member of the medical staff of the Olympic Polyclinic at the 2002 Winter Olympics in Salt Lake City and has provided medical coverage for the Chicago Marathon. He serves as a consulting physician to the National Hockey League Players' Association and is a featured lecturer at the American College of Sports Medicine's Team Physician Course.
Dr. Laskowski, a Cary, Ill., native, has contributed to Mayo Clinic's CD-ROM on sports, health and fitness, a website guide to self-care, and hundreds of Mayo Clinic articles and booklets in print and online. He is a contributing editor to the "Mayo Clinic Fitness for EveryBody" book, and he has presented lectures throughout the world on health, fitness and sports medicine topics. His teaching expertise has been recognized by his election to the Teacher of the Year Hall of Fame at Mayo Clinic.
"There are many myths and misconceptions about exercise and fitness in general, and also many traditions that don't stand up to scientific scrutiny," he says. "My goal is to provide the most up-to-date and accurate information on sports medicine and fitness topics in a way that you can practically incorporate into your life."
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- Heart rate: What's normal?
- Do toning shoes really work?
- see all in Fitness basics
Aerobic exercise (11)
- Barefoot running shoes: Better than traditional running shoes?
- Weighted hula hoops: Hoopla or good exercise?
- Elliptical machines: Better than treadmills?
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Strength training (9)
- Isometric exercises: Good for strength training?
- Weight training: Free weights vs. machine weights
- Weightlifting belt: Do I need one?
- see all in Strength training
Sports nutrition (2)
- 'Natural' steroids: Are they safe?
- Energy drinks: Do they really boost energy?
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Question
Isometric exercises: Good for strength training?
What are isometric exercises, and are they a good way to build strength?
Answer
from Edward R. Laskowski, M.D.
Isometric exercises are contractions of a particular muscle or group of muscles. During isometric exercises, the muscle doesn't noticeably change length and the affected joint doesn't move. Isometric exercises don't effectively build strength but can help maintain muscle strength — most often in a rehabilitative setting.
Isometric exercises are usually done by mimicking a pushing or pulling motion, such as pushing a wall or holding a dumbbell in place with a slightly bent arm. However, because isometric exercises are done in a static position, they'll improve strength in only one particular position. You'd have to do various isometric exercises through your limb's whole range of motion to improve muscle strength across the range. In addition, since isometric exercises are done in a static position, they won't help improve speed or athletic performance. Because blood isn't constantly pumped through the muscle during isometric exercises, muscular endurance can actually decrease. As a result, isometric training is primarily reserved for initial strength training during physical therapy.
Isometric exercises may be helpful to someone who's been injured or has a condition such as arthritis, which could make movement painful or be aggravated by using muscles to move a joint through the full range of motion. For instance, if you injure your rotator cuff, your doctor or physical therapist might initially recommend isometric exercises involving the group of muscles that helps stabilize the shoulder to maintain shoulder strength during recovery.
It's also important to note that isometric exercises aren't recommended for people who have high blood pressure or heart problems. Research has shown that isometric exercises can dramatically increase blood pressure because of the large increase in muscle tension.
Next questionWeight training: Free weights vs. machine weights
- Laskowski ER (expert opinion). Mayo Clinic, Rochester, Minn. Sept. 7, 2009.
- Bera SG, et al. Types of strength and power exercises. In: Brown LE. Strength Training. Champaigne, Ill.: Human Kinetics; 2007:113.
- Your high blood pressure questions answered — Blood pressure and exercise. American Heart Association. http://www.americanheart.org/presenter.jhtml?identifier=3034814. Accessed Sept. 10, 2009.
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