= 급구 
Underwater Pull Series – Introduction
How the hand and forearm are used to propel a swimmer through the water has been the subject of great debate and controversy since the advent of modern competitive swimming. Gary Hall Sr. begins the Underwater Pull series with this Introduction, or a History of Analysis of the underwater pull in the sport of Swimming. We will break down the underwater cycle into 4 phases and prepare you for our own analysis of the underwater pull.
2012-01-22, 일요일 20:31에 최종 업데이트됨
Underwater Pull Series – Phase I
There are two reasons why the hand/arm create lift in the first phase of the underwater pull. Discover why lift is important and how long we typically spend in the “lift phase” for both hip and shoulder driven freestyle in this Analysis of the Underwater Pull by Gary Hall Sr.
2012-01-22, 일요일 20:30에 최종 업데이트됨
Underwater Pull Series – Phase II
The Front Quadrant Propulsive phase occurs when the hand reaches the 3 o’clock position on the 2 foot underwater circle and continues until the 6 o’clock position. During this phase the hand stops acting like a wing, applying downward force for lift and suddenly changes directions and accelerates backwards.
2012-01-22, 일요일 20:30에 최종 업데이트됨
Underwater Pull Series – Phase III
The back quadrant propulsive phase occurs between the 6 o’clock and 9 o’clock (or 9:30sh) position on the clock. The hand takes a different course than following the perimeter of the clock as it does in the other 3 phases. In order to continue in a backward motion the hand and forearm must elevate, taking a short cut in the underwater pull cycle.
2012-01-22, 일요일 20:30에 최종 업데이트됨
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