The spelling of "dolphin kick" can be explained using IPA phonetic transcription. The first syllable is pronounced as "dɒlfɪn", with the letter "o" being replaced by the sound "ɒ". The second syllable "kick" is pronounced as "kɪk", with the letter "c" being replaced by the sound "k". The word "dolphin" refers to the marine animal known for its intelligent behavior and playful nature. In swimming, the dolphin kick is a technique used to propel the body through the water.
The term "dolphin kick" refers to a specific swimming technique predominantly used in competitive swimming, particularly in events that involve butterfly stroke or underwater propulsion. It is characterized by a rapid, undulating motion of both legs and feet, resembling the graceful movements of dolphins.
During a dolphin kick, the swimmer lies face down in the water, with arms extended forward and legs tightly pressed together. The legs then execute an alternating, wave-like motion, initiated from the hips and propagated through the entire lower body. This means that the legs and feet remain together throughout the movement, resembling a monofin. As the swimmer undulates their body, the legs thrust downwards and then upwards, generating propulsion and contributing to forward momentum. The powerful kicks employ both the upward and downward phases of the wave-like motion skillfully to maximize speed and efficiency.
The dolphin kick is widely regarded as an effective method for accelerating underwater, allowing swimmers to cover significant distance quickly while minimizing resistance. Thus, it is frequently employed during starts, turns, and underwater phases to gain a competitive advantage. Additionally, it requires significant core and leg strength, as well as flexibility, in order to achieve optimal performance. Competitors focus on perfecting their dolphin kick technique to ensure maximum speed and maintain a streamlined body position underwater while conserving energy for the remainder of the race.
The etymology of the phrase "dolphin kick" is rooted in the name of the aquatic mammal, the dolphin, and the kicking motion it uses to swim. The word "dolphin" itself originates from the ancient Greek word "delphís" (δελφίς), which means "dolphin" or "womb". The term "kick" refers to the movement produced by forcefully thrusting the leg or foot in a particular direction. In swimming, the dolphin kick refers to a specific technique where the swimmer generates propulsion by undulating the body and legs in a dolphin-like motion.