Social Icons

twitter follow facebook followgoogle pluslinkedinrss feedemail

Featured Posts

Supported Single-Arm Dumbbell Row

Supported Single-Arm Dumbbell Row

Hold a dumbbell in your right hand, place your left hand on a bench in front of you, and assume a staggered stance, left foot forward. Hold your elbow in as you row the wight to the side of your torso. Do 10 reps, switch arms and leg positions, and repeat the movement.

Dumbbell Triceps Kickback

Dumbbell Triceps Kickback

Grab a pair of dumbbells, bend your knees and lean forward so your torso is nearly parallel to the floor. Tuck your upper arms next to your sides, bend your elbows, and hold your forearms about parallel to the floor, palms facing up. Simultaneously extend your arms straight back and rotate the weight so your palms end up facing each other. Return to the starting position. Do 15 reps.

Dumbbell Hammer Curl and Press

Dumbbell Hammer Curl and Press

Standing with your feet shoulder-width apart, hold a pair of dumbbells at arm's length by your sides, palms facing each other. Without moving your upper arms, curl the weights to your shoulders, and then press them overhead until your arms are straight. Reverse the move to return to the starting position. Do 10 reps.

Wednesday, November 7, 2012

Antioxidants and Other Phytochemicals


Many antioxidant products are marketed with claims that, by blocking the action free radicals, they can help prevent heart disease, cancer, and various other conditions associated with aging.

Free radicals are atoms or groups of atoms that have at least one unpaired electron, which makes them highly reactive. Free radicals promote beneficial oxidation that produces energy and kills bacterial invaders. In excess, however, they produce harmful oxidation that can damage cell membranes and cell contents. It is known that people who eat adequate amounts of fruits and vegetables high in antioxidants have a lower incidence of cardiovascular disease, certain cancers, and cataracts. Fruits and vegetables are rich in antioxidants, but it is not known which dietary factors are responsible for the beneficial effects.

Antioxidants

Each plant contains hundreds of phytochemicals (plant chemicals) whose presence is dictated by hereditary factors. Only well-designed long-term research can determine whether any of these chemicals, taken in a pill, would be useful for preventing any disease.

The most publicized phytochemicals with antioxidant properties have been vitamin C, vitamin E, and beta-carotene (which the body converts into vitamin A). Evidence exists that vitamin E can help prevent atherosclerosis by interfering with the oxidation of low-density lipoproteins (LDL), a factor associated with increased risk of heart disease. However, vitamin E also has an anticoagulant effect that can promote excessive bleeding. In 1993, the New England Journal of Medicine published two epidemiologic studies which found that people who took vitamin E supplements had fewer deaths from heart disease. These studies did not prove that taking vitamin E was useful because they did not rule out the effects of other lifestyle factors or consider death rates from other diseases.

Moreover, other studies have had conflicting results. The only way to settle the question scientifically is to conduct long-term double-blind clinical studies comparing vitamin users to nonusers and checking death rates from all causes.

0 comments:

Post a Comment

 

Ultimate 30's Workout

Increase the amount of testosterone and growth hormone your body produces by working multiple muscle groups and keeping rest periods short. For cardio, your lactate threshold can still be increased throughout your thirties, so intervals are king to counter any loss of lung power.


Tips for Bodybuilders

Ultimate 40's Workout

Short, sharp shocks are the way to fire up your body in your middle years - which means you can forget long-winded weights workouts. Vary exercises, intensity and timings to keep your muscles guessing.



Bodybuilding World

Ultimate 50's Workout

You may not be able to lift the heaviest weight, but that's okay. Instead, stretching and yoga should be part of your training, and body-weight moves can replace heavy workouts. Do three sets of 10 reps of the following exercises to protect your joints and maintain muscle mass and testosterone.

Famous Bodybuilders