The aim of this study was to analyze the relationships between
“Sailor’s jigs” kinematics and increasing music cadence. Six young
women, non-pregnant, with at least one year of experience conducting
this type of head-out aquatic program, with no kind of skeletal
muscle injury reported in the last six months were evaluated. The
exercise was recorded on video, in the frontal plane, using a pair of
cameras, enabling a double projection, from above and underwater
body motions, at five increasing cadences (120 b.min-1, 135 b.min-1,
150 b.min-1, 165 b.min-1 and 180 b.min-1). Images were thereafter
digitized in specific software (Ariel Performance Analysis Systems).
The cycle period decreased through the incremental protocol. Cycle
period decrease is done decreasing joint range of motion and increasing
the limbs segmental velocity as well. Although these combined
kinematical strategy, a deeper analysis reveals that subjects decrease
the cycle period mainly decreasing the range of motion.
