Waltz dance

Introduction and acceptance

The peasants of Bavaria, Tyrol, and Styria began dancing a dance called Walzer, a dance for couples, around 1750. The Ländler, also known as the Schleifer, a country dance in 3/4 time, was popular in Bohemia, Austria, and Bavaria, and spread from the countryside to the suburbs of the city. While the eighteenth century upper classes continued to dance the minuet, bored noblemen slipped away to the balls of their servants.There are several references to a sliding or gliding dance—a waltz—from the 16th century, including the representations of the printer H.S. Beheim. The French philosopher Montaigne wrote of a dance he saw in 1580 in Augsburg, where the dancers held each other so closely that their faces touched. Kunz Haas (of approximately the same period) wrote, "Now they are dancing the godlessWeller or Spinner." "The vigorous peasant dancer, following an instinctive knowledge of the weight of fall, utilizes his surplus energy to press all his strength into the proper beat of the measure, thus intensifying his personal enjoyment in dancing".

In the 1771 German novel Geschichte des Fräuleins von Sternheim by Sophie von La Roche, a high-minded character complains about the newly introduced waltz among aristocrats thus: "But when he put his arm around her, pressed her to his breast, cavorted with her in the shameless, indecent whirling-dance of the Germans and engaged in a familiarity that broke all the bounds of good breeding—then my silent misery turned into burning rage."

Describing life in Vienna (dated at either 1776 or 1786), Don Curzio wrote, "The people were dancing mad [...] The ladies of Vienna are particularly celebrated for their grace and movements of waltzing of which they never tire." There is a waltz in the second act finale of the opera "Una Cosa Rara" written by Martin y Soler in 1786. Soler's waltz was marked Andante con moto, or "at a walking pace with motion", but the flow of the dance was sped-up in Vienna leading to the Geschwindwalzer, and the Galloppwalzer.

In the transition from country to town, the hopping of the Ländler, a dance known as Langaus, became a sliding step, and gliding rotation replaced stamping rotation.

In the 19th century, the word primarily indicated that the dance was a turning one; one would "waltz" in the polka to indicate rotating rather than going straight forward without turning.

The Viennese custom is to slightly anticipate the second beat, which conveys a faster, lighter rhythm, and also breaks of the phrase. The younger Strauss would sometimes break up the one-two-three of the melody with a one-two pattern in the accompaniment along with other rhythms, maintaining the 3/4 time while causing the dancers to dance a two-step waltz. The metronome speed for a full bar varies between 60 and 70, with the waltzes of the first Strauss often played faster than those of his sons.

Shocking many when it was first introduced, the waltz became fashionable in Vienna around the 1780s, spreading to many other countries in the years to follow. It became fashionable in Britain during the Regency period, having been made respectable by the endorsement of Dorothea Lieven, wife of the Russian ambassador. Diarist Thomas Raikes later recounted that "No event ever produced so great a sensation in English society as the introduction of the waltz in 1813." In the same year, a sardonic tribute to the dance by Lord Byron was anonymously published (written the previous autumn). Influential dance master and author of instruction manuals, Thomas Wilson published A Description of the Correct Method of Waltzing in 1816. Almack's, the most exclusive club in London, permitted the waltz though the entry in the Oxford English Dictionary shows that it was considered "riotous and indecent" as late as 1825. The waltz, and especially its closed position, became the example for the creation of many other ballroom dances. Subsequently, new types of waltz have developed, including many folk and several ballroom dances.

Details

In the 1910s, a form called the "Hesitation Waltz" was introduced by Vernon and Irene Castle. It incorporated "hesitations" and was danced to fast music. A hesitation is basically a halt on the standing foot during the full waltz measure, with the moving foot suspended in the air or slowly dragged. Similar figures (Hesitation Change, Drag Hesitation, and Cross Hesitation) are incorporated in the International Standard Waltz Syllabus.

The Country Western Waltz is mostly progressive, moving counter clock wise around the dance floor. Both the posture and frame are relaxed, with posture bordering on a slouch. The exaggerated hand and arm gestures of some ballroom styles are not part of this style. Couples may frequently dance in the promenade position, depending on local preferences. Within Country Western waltz, there is the Spanish Waltz and the more modern (for the late 1930s- early 1950s) Pursuit Waltz. At one time it was considered ill treatment for a man to make the woman walk backwards in some locations.

In California the waltz was banned by Mission fathers until after 1834 because of the "closed" dance position. Thereafter a Spanish Waltz was danced. This Spanish Waltz was a combination of dancing around the room in closed position, and a "formation" dance of two couples facing each other and performing a sequence of steps. "Valse a Trois Temps" was the "earliest" waltz step, and the Rye Waltz was favored as a couple dance.

• In contemporary ballroom dance, the fast versions of the waltz are called Viennese Waltz as opposed to the Slow waltz.
• In traditional Irish music, the waltz was taught by traveling dancing masters to those who could afford their lessons during the 19th century. By the end of that century, the dance spread to the middle and lower classes of Irish society and traditional triple-tune tunes and songs were altered to fit the waltz rhythm. During the 20th century, the waltz found a distinctively Irish playing style in the hands of Céilidh musicians at dances.
• International Standard Waltz has only closed figures; that is, the couple never breaks the embrace.
• The American Style Waltz, part of the American Smooth ballroom dance syllabus, in contrast to the International Standard Waltz, involves breaking contact almost entirely in some figures. For example, the Syncopated Side-by-Side with Spin includes a free spin for both partners. Open rolls are another good example of an open dance figure, in which the follower alternates between the lead's left and right sides, with the lead's left or right arm (alone) providing the lead. Waltzes were the staple of many American musicals and films, including "Waltz in Swing Time" sung by Fred Astaire.
• The Scandinavian Waltz, performed as a part of Scandinavian folk dance, can be fast or slow, but the dancers are always rotating.
• The Peruvian Waltz is called and recognized in Peru as vals criollo.
• The Mexican Waltz (vals mexicano) follows the same basic rhythmic pattern as the standard waltz, but the melodies reflect a strong Spanish influence. Mexico's Juventino Rosas wrote "Sobre las Olas" or "Over the Waves", commonly known in the U.S. as a circus song played during a trapeze show.
• The Cajun Waltz is danced progressively around the floor, and is characterized by the subtle swaying of the hips and step very close to ordinary walking. It is danced entirely in the closed position.
• The Cuban (or Tropical) Waltz follows the pattern of the standard waltz throughout the song.
• The Venezuelan waltz provided a basis for distinctive regional musical composition.
• The Contra Waltz (Freeform Waltz), included in most contra dance evenings, uses both open and closed positions, and incorporates moves from other dances such as swing,modern jive and salsa. Basically the dancers progress around the dance floor with a waltz step, but with no constraints on what moves they can use.
• The Valse Musette, a form of waltz popular in France, started in the late 19th century.
• The cross-step waltz (French Valse Boston) developed in France in the early 20th century and is popular in social waltz groups today.
• In folk dance from the Alsace region, waltzes in odd meters such as 5/4, 8/4 and 11/4 are found. In modern bal folk, waltzes in even higher meters are played and danced.

Today both the faster Viennese Waltz, made forever popular by the Strauss family, and the slower American and International style waltzes are extremely popular with dancers of all ages.

AEROBIC EXERCISE

Aerobic exercise (also known as cardio) is physical exercise of low to high intensity that depends primarily on the aerobic energy-generating process. Aerobic literally means "relating to, involving, or requiring free oxygen", and refers to the use of oxygen to adequately meet energy demands during exercise via aerobic metabolism. Generally, light-to-moderate intensity activities that are sufficiently supported by aerobic metabolism can be performed for extended periods of time.

Aerobic exercise and fitness can be contrasted with anaerobic exercise, of which strength training and short-distance running are the most salient examples. The two types of exercise differ by the duration and intensity of muscular contractions involved, as well as by how energy is generated within the muscle.

New research on the endocrine functions of contracting muscles has shown that both aerobic and anaerobic exercise promote the secretion of myokines, with attendant benefits including growth of new tissue, tissue repair, and various anti-inflammatory functions, which in turn reduce the risk of developing various inflammatory diseases. Myokine secretion in turn is dependent on the amount of muscle contracted, and the duration and intensity of contraction. As such, both types of exercise produce endocrine benefits.

In almost all conditions, anaerobic exercise is accompanied by aerobic exercises because the less efficient anaerobic metabolism must supplement the aerobic system due to energy demands that exceed the aerobic system's capacity. What is generally called aerobic exercise might be better termed "solely aerobic", because it is designed to be low-intensity enough not to generate lactate via pyruvate fermentation, so that all carbohydrate is aerobically turned into energy.

Initially during increased exertion, muscle glycogen is broken down to produce glucose, which undergoes glycolysis producing pyruvate which then reacts with oxygen (Krebs cycle, Chemiosmosis) to produce carbon dioxide and water and releases energy. If there is a shortage of oxygen (anaerobic exercise, explosive movements), carbohydrate is consumed more rapidly because the pyruvate ferments into lactate. If the intensity of the exercise exceeds the rate with which the cardiovascular system can supply muscles with oxygen, it results in buildup of lactate and quickly makes it impossible to continue the exercise. Unpleasant effects of lactate buildup initially include the burning sensation in the muscles, and may eventually include nausea and even vomiting if the exercise is continued without allowing lactate to clear from the bloodstream.

As glycogen levels in the muscle begin to fall, glucose is released into the bloodstream by the liver, and fat metabolism is increased so that it can fuel the aerobic pathways. Aerobic exercise may be fueled by glycogen reserves, fat reserves, or a combination of both, depending on the intensity. Prolonged moderate-level aerobic exercise at 65% VO2 max (the heart rate of 150 bpm for a 30-year-old human) results in the maximum contribution of fat to the total energy expenditure. At this level, fat may contribute 40% to 60% of total, depending on the duration of the exercise. Vigorous exercise above 75% VO2 max (160 bpm) primarily burns glycogen.

Major muscles in a rested, untrained human typically contain enough energy for about 2 hours of vigorous exercise. Exhaustion of glycogen is a major cause of what marathon runners call "hitting the wall". Training, lower intensity levels, and carbohydrate loading may allow postponement of the onset of exhaustion beyond 4 hours.

Aerobic exercise comprises innumerable forms. In general, it is performed at a moderate level of intensity over a relatively long period of time. For example, running a long distance at a moderate pace is an aerobic exercise, but sprinting is not. Playing singles tennis, with near-continuous motion, is generally considered aerobic activity, while golf or two person team tennis, with brief bursts of activity punctuated by more frequent breaks, may not be predominantly aerobic. Some sports are thus inherently "aerobic", while other aerobic exercises, such as fartlek training or aerobic dance classes, are designed specifically to improve aerobic capacity and fitness. It is most common for aerobic exercises to involve the leg muscles, primarily or exclusively. There are some exceptions. For example, rowing to distances of 2,000 m or more is an aerobic sport that exercises several major muscle groups, including those of the legs, abdominal, chest, and arms. Common kettle bell exercises combine aerobic and anaerobic aspects.

Among the recognized benefits of doing regular aerobic exercise are:

• Strengthening the muscles involved in respiration, to facilitate the flow of air in and out of the lungs
• Strengthening and enlarging the heart muscle, to improve its pumping efficiency and reduce the resting heart rate, known as aerobic conditioning
• Improving circulation efficiency and reducing blood pressure
• Increasing the total number of red blood cells in the body, facilitating transport of oxygen
• Improved mental health, including reducing stress and lowering the incidence of depression, as well as increased cognitive capacity.
• Reducing the risk for diabetes. One meta-analysis has shown, from multiple conducted studies, that aerobic exercise does help lower Hb A_1C levels for type 2 diabetics.

As a result, aerobic exercise can reduce the risk of death due to cardiovascular problems. In addition, high-impact aerobic activities (such as jogging or using a skipping rope) can stimulate bone growth, as well as reduce the risk of osteoporosis for both men and women.

In addition to the health benefits of aerobic exercise, there are numerous performance benefits:

• Increased storage of energy molecules such as fats and carbohydrates within the muscles, allowing for increased endurance
• Neovasc ularization of the muscle sarco meres to increase blood flow through the muscles
• Increasing speed at which aerobic metabolism is activated within muscles, allowing a greater portion of energy for intense exercise to be generated aerobically
• Improving the ability of muscles to use fats during exercise, preserving intramuscular glycogen
• Enhancing the speed at which muscles recover from high intensity exercise
• Neurobiological effects: improvements in brain structural connections and increased gray matter density, new neuron growth, improved cognitive function (cognitive controland various forms of memory), and improvement or maintenance of mental health

Some downfalls of aerobic exercise include:

• Overuse injuries because of repetitive, high-impact exercise such as distance running.
• Is not an effective approach to building muscle.
• Only effective for fat loss when used consistently.

Both the health benefits and the performance benefits, or "training effect", require a minimum duration and frequency of exercise. Most authorities suggest at least twenty minutes performed at least three times per week.^[13]