Gardening for Fitness and Health

The Benefits of Exercise and Sunlight

© Sally Bunch

May 19, 2009
Gardening is a healthy activity that provides important exercise and exposure to sunlight. Certain precautions should be considered in order to enjoy these benefits.

The benefits of gardening are not limited to better nutrition from fruits and vegetables in the diet. Recent studies have shown that digging in the dirt can reduce not only stress, but the risk of developing diseases like lung cancer, heart disease, and diabetes. In addition, a research team at the University of New South Wales has recently found that daily gardening plays a role in reducing the risk of developing dementia.

Much of these findings are associated with the increase in exercise that gardening can provide. Gardeners can burn as many calories performing some tasks as they would with other forms of exercise. For example, digging, one of the most common activities, can burn as many as 340 calories per hour, depending on the weight of the individual and the level of intensity. That’s more than light to moderate weight lifting at 204 calories per hour. The physical demands of gardening can also help build leg, arm, back, abdominal and other muscles.

Despite the dangers of too much sun from being out in the garden, exposure to the sun’s ultraviolet rays increases the amount of vitamin D produced in the body. One of the main benefits of Vitamin D is that it helps the body absorb calcium, which is essential for strong bones and teeth as well as the prevention of osteoporosis and other conditions.

As too much of a good thing can cause problems, it is important to exercise caution to appreciate these gardening health benefits.

Prepare for the Strain of Exercise

Gardeners who dive right into a strenuous garden task without warming up or stretching run the risk of straining their muscles. Walk around the garden for about five minutes before starting any actual work, and perform some basic exercises to prepare the abdominal, back, leg, and other muscles to avoid aches and pains that could result from the reaching, digging, pulling, lifting, and other motions involved in gardening tasks. Don’t forget to cool down afterward.

Bend with the Knees, Not the Back

This is the most important rule to avoid straining the back. Gardeners should always bend with their knees to reach the ground, and alternate the feet they put their weight on. When raking leaves or hoeing, use a tool with a long enough handle to avoid bending over.

Use Different Positions

Staying in the same position for too long can lead to sore muscles. Alternate between crouching, sitting, and kneeling on a pad when weeding. Get up from time to time bring weeds to the compost pile, walk around, or perform a different task.

Prepare for Sun Exposure

Take precautions before heading outdoors. Try to schedule gardening time before or after the 10:00 am-4:00 pm time period when the sun is the strongest. Wear a hat and a sunscreen with a UPF index of at least 30, and, if possible, clothing with UPF protection as well. Just as with any planned exercise session, always have a bottle of water on hand and stay hydrated.


The copyright of the article Gardening for Fitness and Health in Vegetable Gardens is owned by Sally Bunch. Permission to republish Gardening for Fitness and Health in print or online must be granted by the author in writing.




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Comments
May 20, 2009 12:00 PM
Guest :
Thank you for your clear, lovely article outlining the benefits of gardening. Gardening is great exercise, and, as you say, it can be hard on the back and the spine. It's particularly important for folks with osteoporosis to follow the principles of safe body mechanics you mention, both in gardening and in all daily activities.

Forward bending, also called spinal flexion, is the most common way people with osteoporosis sustain a vertebral compression fracture. Even just bending down to pull one quick weed or to tie your shoe should be avoided as much as possible if you have osteoporosis.

Forward bending puts three times the body weight through the spine compared to standing. This additional compression may be enough to cause a vertebral compression fracture if bone density is low.

Safe body mechanics for the spine means maintaining the lumbar curve, that arch in your lower back, while you do things. When we forward bend, as is so common in gardening, we lose the lumbar curve, an essential part of the architecture of the spine that helps distribute the compressive force of gravity.

Additional strategies to those mentioned above include kneeling; working on all fours; squatting; supporting the spine with one hand on your thigh, the ground or a bench as you keep your spine long; sitting on a stool. Tilt the spine by bending at the hip joint, keeping your back flat, rather than bending the spine itself forward.

To your health!

Rachael R. Resch, MS PT
Physical Therapist

Synergy Physical Therapy
Ashland, Oregon
www.synergy-pt.net
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