Skip to main content

Table 3 Discriminative validity for the assessment of absolute (cm) and relative (% arm length) Upper Quarter Y Balance Test performance between trained (i.e., swimmers) and age−/sex-matched untrained (i.e., controls) youth

From: Discriminative validity of the lower and upper quarter Y balance test performance: a comparison between healthy trained and untrained youth

 

Participants (N = 74)

Statistics

Swimmers (n = 37)

Controls (n = 37)

p-value (d)

AUC-value

Right arm reach

 MD (cm)

84.8 ± 8.8

76.3 ± 10.6

<.001 (0.87)

.75

 IL (cm)

83.1 ± 10.7

69.7 ± 9.8

<.001 (1.30)

.83

 SL (cm)

67.9 ± 8.3

53.6 ± 7.8

<.001 (1.78)

.90

Left arm reach

 MD (cm)

83.6 ± 8.9

75.1 ± 10.0

<.001 (0.91)

.75

 IL (cm)

82.8 ± 9.7

70.7 ± 10.5

<.001 (1.19)

.79

 SL (cm)

64.3 ± 7.3

52.6 ± 8.6

<.001 (1.46)

.84

Right arm reach

 MD (% AL)

104.0 ± 8.4

94.5 ± 11.9

<.001 (0.92)

.73

 IL (% AL)

102.2 ± 13.5

87.2 ± 16.6

<.001 (0.99)

.76

 SL (% AL)

83.3 ± 9.3

67.0 ± 12.6

<.001 (1.48)

.85

 CS (% AL)

96.0 ± 8.1

82.9 ± 12.1

<.001 (1.28)

.80

Left arm reach

 MD (% AL)

102.3 ± 6.8

92.7 ± 10.4

<.001 (1.09)

.78

 IL (% AL)

101.8 ± 12.9

88.3 ± 17.5

<.001 (0.88)

.71

 SL (% AL)

79.0 ± 9.4

65.8 ± 13.8

<.001 (1.11)

.77

 CS (% AL)

94.8 ± 9.0

82.3 ± 12.3

<.001 (1.17)

.79

  1. Data are mean ± standard deviation. Absolute values (cm) are shown first followed by relative values (% AL). Cohen’s d [18] can be classified as being small (0 ≤ d ≤ 0.49), medium (0.50 ≤ d ≤ 0.79), or large (d ≥ 0.80). In accordance with Deyo and Conter [23], the AUC-value can lie between 0.5 (“no” discriminative validity) and 1.0 (“perfect” discriminative validity)
  2. AL arm length, AUC area under the receiver operator characteristic (ROC) curve, CS composite score, IL inferolateral, MD medial, SL superolateral
Back to article page

BMC Sports Science, Medicine and Rehabilitation

ISSN: 2052-1847

Contact us