The Health Benefits of Weight Training

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Benefits of weight training include increased strength, muscle mass, endurance, bone and bone mineral density, insulin sensitivity, GLUT 4 density, HDL cholesterol, improved cardiovascular health and appearance, and decreased body fat, blood pressure, LDL cholesterol and triglycerides.

The body’s basal metabolic rate increases with increases in muscle mass, which promotes long-term fat loss and helps dieters avoid yo-yo dieting. Moreover, intense workouts elevate metabolism for several hours following the workout, which also promotes fat loss.

Weight training also provides functional benefits. Stronger muscles improve posture, provide better support for joints, and reduce the risk of injury from everyday activities. Older people who take up weight training can prevent some of the loss of muscle tissue that normally accompanies aging—and even regain some functional strength—and by doing so, become less frail. They may be able to avoid some types of physical disability. Weight-bearing exercise also helps to increase bone density to prevent osteoporosis. The benefits of weight training for older people have been confirmed by studies of people who began engaging in it even in their eighties and nineties.

For many people in rehabilitation or with an acquired disability, such as following stroke or orthopedic surgery, strength training for weak muscles is a key factor to optimize recovery. For people with such a health condition, their strength training is likely to need to be designed by an appropriate health professional, such as a physiotherapist.

Stronger muscles improve performance in a variety of sports. Sport-specific training routines are used by many competitors. These often specify that the speed of muscle contraction during weight training should be the same as that of the particular sport. Sport-specific training routines also often include variations to both free weight and machine movements that may not be common for traditional weightlifting.

Though weight training can stimulate the cardiovascular system, many exercise physiologists, based on their observation of maximal oxygen uptake, argue that aerobics training is a better cardiovascular stimulus. Central catheter monitoring during resistance training reveals increased cardiac output, suggesting that strength training shows potential for cardiovascular exercise. However, a 2007 meta-analysis found that, though aerobic training is an effective therapy for heart failure patients, combined aerobic and strength training is ineffective; “the favorable antiremodeling role of aerobic exercise was not confirmed when this mode of exercise was combined with strength training”.

One side-effect of any intense exercise is increased levels of dopamine, serotonin and norepinephrine, which can help to improve mood and counter feelings of depression.

Weight training has also been shown to benefit dieters as it inhibits lean body mass loss (as opposed to fat loss) when under a caloric deficit. Weight training also strengthens bones, helping to prevent bone loss and osteoporosis. By increasing muscular strength and improving balance, weight training can also reduce falls by elderly persons. Weight training is also attracting attention for the benefits it can have on the brain, and in older adults, a 2017 meta-analysis found that it was effective in improving cognitive performance.

Studies also show that weight training has significant benefits for an individual’s mental health. Strength training has shown to reduce symptoms of anxiety, depression, and insomnia.

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