Dumbbell

A barbell is a sports equipment that is usually from a pole and two attached to the ends of weights in the form of spheres or discs. The training with the help of dumbbells is referred to as weight training. Light dumbbells are used in the gym and the fitness training, free weights with heavy weights at strength training and bodybuilding.

Word origin

In ancient Greece, the athletes lead or stone weights ( ἁλτῆρες halteres ) used the long jump ( Pentathlon ) to increase the jump distance. They stopped at the start in the hands of each one of dumbbells, weights, jumped from swinging and let the weights fall at the end of the jump. The halteres weighing 1.6 to 4.6 kg. In French, the term is still preserved ( haltère ), the term les poids et haltères or haltérophilie in French means ' weight lifting ' as a sport

• (see also: halteres of insects ).

Types

There are various types of weights, including:

• One-hand dumbbells Dumbbell (English dumbbell )
• Kettlebells (English Kettlebell )

• Barbell (English Barbell )
• Curl dumbbell or barbell SZ (English EZ curl bar)
• Triceps Dumbbell (English triceps bar)
• Vibration dumbbell

Also, a distinction between dumbbells with adjustable and fixed weight, which can be filled with sand, metal or water (usually only one-hand dumbbells ). The adjustable dumbbells usually have the left and right weight plates made ​​of cast iron, which are secured with fasteners.

Closures

There are the following Locking Systems for weight plates:

• Spring rings
• Collars
• Screw

Spring rings allow a very rapid change of the disks. They are used in applications where the number of disks is often varied. Their disadvantage is that they can slip and thus pose a security risk.

Collars are several centimeters large pieces of pipe with a screw. The pipe sections are drawn over the barbell and fixed by a screw. The screws exist roughly two variants: Allen and locking toggle bolts. The Allen screws wear out quickly. The advantage of the collars is that they securely fasten the plates on the barbell.

With screw caps located at the two ends of the barbell each have an external thread on which a nut is screwed, which locks the weight plates.

Weights and Dimensions

The weight plates usually have the following classification of their masses:

• 0.5 kg
• 1.25 kg
• 2 kg
• 2.5 kg
• 3 kg
• 5 kg
• 10 kg
• 15 kg
• 20 kg
• 25 kg
• 50 kg

Weight plates are made of cast iron ( coated with rubber or chrome ). The rubber coating to prevent rust and prevent the dropping of dumbbells noise pollution and scratches on sensitive floors ( eg parquet ). Chrome offers only an optical advantage.

Dumbbell rods are available in different diameter- guided tours:

In addition to these widespread in continental Europe diameters in the Anglo-Saxon dominated by 1-inch rods (25 to 26 mm diameter). In addition, sporadic manufacturers use proprietary formats.

The rods themselves are made of chromed steel.

Dumbbell

Dumbbells are training devices, which are used primarily to build muscle, but also to increase impact and bounce. The diverse range of application and the large range of motion allows particularly in professional bodybuilding is the address of "hidden" muscles that are often neglected in the modern appliances. Thus, for example, weaker parts of the body specifically train yourself to ensure a uniform muscle growth. The increased demands on the coordination especially promote important for posture inner muscle regions, the mobility and the cardiovascular system.

Typical exercises with dumbbells are: ( Reverse ) Fly, Curl, Lateral Raises, Shrugs ( shrugs ).

Barbell

Typical exercises with a barbell are bench press, deadlifts, squats, Hot Iron, Shrugs, rowing, biceps curls, wrist curl. With a barbell, you can train the whole body.

Curl dumbbell

In the Curl dumbbell, also called " SZ- dumbbell ", the rod is bent several times, so that some exercises can be performed easily and without stress on the wrists.

The typical exercises with a dumbbell curl are bicep curls. Another exercise is the shrug.

Triceps Dumbbell

In two parallel Trizepshantel handles transversely to the dumbbell axis mounted in a frame at the ends of the weight plates are secured.

Vibration dumbbell

The vibration dumbbell consists of a bendable resilient rod of about 1.50 m length of fiber material may be terminated small additional weights. To the center of mass of the rod is usually equipped with a foam grip that allows a non-slip hold with minimal effort.

Rhythmic movement of the hand in one of two directions transverse to the dumbbell axis, ie from the elbow with the forearm or pushing a pendulum rain one plane vibration mode of the dumbbell center including hand with here up to 20 cm amplitude against the dumbbell ends at. Because yes on the direction the mass forearm semi resonates all or only to different natural frequencies to form 4 - from 5 Hz. To receive one of the two right angles to each other vibrational modes of the rod takes practice and concentration. Because the upper arm, forearm and dumbbell swing thereby coupled to fend for themselves and strive to chaos.

The vibration dumbbell is to activate the additional mechanical stimuli metabolism and stimulate the lymphatic system.