Fitness basics (21)
- Tool: Target heart rate calculator
- Fitness programs: 6 steps to guide your selection
- Fitness for less: 4 low-cost ways to shape up
- see all in Fitness basics
Stretching and flexibility (3)
- Stretching: Focus on flexibility
- How fit are you? See how you measure up
- Hamstring injury
Aerobic exercise (12)
- Walking: How to start a walking group
- Exercise intensity: Why it matters, how it's measured
- Aerobic exercise: How to warm up and cool down
- see all in Aerobic exercise
Strength training (9)
- Weight training: Do's and don'ts of proper technique
- Weight training: Improve your muscular fitness
- Core exercises: Why you should strengthen your core muscles
- see all in Strength training
continued:
Strength training: Get stronger, leaner, healthier
Getting started
When you have your doctor's OK to begin a strength training program, start slowly. Warm up with five to 10 minutes of stretching or gentle aerobic activity, such as brisk walking. Then choose a weight or resistance level heavy enough to tire your muscles after about 12 repetitions.
"On the 12th repetition, you should be just barely able to finish the motion," Dr. Laskowski says. "When you're using the proper weight or amount of resistance, you can build and tone muscle just as efficiently with a single set of 12 repetitions as you can with more sets of the same exercise."
To give your muscles time to recover, rest one full day between exercising each specific muscle group. When you can easily do more than 15 repetitions of a certain exercise, gradually increase the weight or resistance. Remember to stop if you feel pain. Although mild muscle soreness is normal, sharp pain and sore or swollen joints are signs that you've overdone it.
When to expect results
You don't need to spend hours a day lifting weights to benefit from strength training. Two to three strength training sessions a week lasting just 20 to 30 minutes are sufficient for most people. You may enjoy noticeable improvements in your strength and stamina in just a few weeks. With regular strength training, you'll continue to increase your strength — even if you're not in shape when you begin.
Strength training can do wonders for your physical and emotional well-being. Make it part of your quest for better health.
Previous page(2 of 2)
- Peterson DM. Overview of the benefits and risks of exercise. http://www.uptodate.com/home/index.html. Accessed Feb. 24, 2010.
- Pollock ML, et al. Resistance training for health. The President's Council on Physical Fitness and Sports. http://www.fitness.gov/resistance.pdf. Accessed Feb. 24, 2010.
- Wilmore JH, et al. Principles of exercise training. Wilmore JH, et al. Physiology of Sport and Exercise. 4th ed. Champaign, Ill.: Human Kinetics; 2008:186.
- Callahan LF. Physical activity programs for chronic arthritis. Current Opinion in Rheumatology. 2009;21:177.
- Sims J, et al. Regenerate: Assessing the feasibility of a strength-training program to enhance the physical and mental health of chronic post stroke patients with depression. International Journal of Geriatric Psychiatry. 2009;24:76.
- Kirk EP, et al. Minimal resistance training improves daily energy expenditure and fat oxidation. Medicine and Science in Sports and Exercise. 2009;41:1122.
- Liu-Ambrose T, et al. Resistance training and executive functions: A 12-month randomized controlled trial. Archives of Internal Medicine. 2010;170:170.
- Laskowski ER (expert opinion). Mayo Clinic, Rochester, Minn. March 24, 2010.

Find Mayo Clinic on