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Table 3 Maximum cross-correlation coefficients and phasing for between segment analyses (S.D.)

From: Upper torso and pelvis linear velocity during the downswing of elite golfers

Upper torso-pelvis

Max. correlation coefficient

Positive correlation coefficient (%)

Phasing

- : 0 : + (ratio)

Anterior/posterior

0.84 (0.15)

86

26 (18)

3 : 0 : 39 (93%)

Medial/lateral

0.75 (0.16)

79

3 (13)

9 : 0 : 33 (79%)

Up/down

0.88 (0.11)

86

−7 (23)

21 : 9 : 12 (50%)

Speed

0.97 (0.02)

100

11 (18)

9 : 3 : 30 (71%)

  1. Max. correlation coefficient: The maximum absolute value among the correlation coefficients of two types of data series from the overall time domain.
  2. Positive correlation coefficient (%): The ratio to have positive correlation coefficients among the maximum absolute correlation coefficients of the two types of data series in the overall time domain.
  3. Phasing: The time-lag (the number of data points) when maximum absolute correlation coefficient appears.
  4. - : 0 : + (ratio): The number and ratio of negative (upper torso is leading), zero (occur simultaneously) and positive (upper torso is lagging) phasing value among the total trials (14 subjects x 3 trials).
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BioMedical Engineering OnLine

ISSN: 1475-925X

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