Inter-rater reliability and test-retest reliability of the Performance and Fitness (PERF-FIT) test battery for children: a test for motor skill related fitness

Table 3 Test-retest reliability with means and 95% confidence interval of PERF-FIT variables at Time 1 and 2. Results of the paired samples t-test with bootstrapping (Mean difference between time 1 and 2 with bias, standard error, corrected 95% confidence intervals of the mean difference, t- and p-values and Cohen’s d effect size), results of the ANOVA (F and p-values of the comparison of the reliability results between the three countries)

PERF-FIT items	Time 1 Mean	95% CI Lower	95% CI Upper	Time 2 Mean	95% CI Lower	95% CI Upper	Mean Difference	Bias	Std. Error	BCa 95% CI Lower	BCa 95% CI Upper	t-value	p-value	Effect size	F-value	p-value
Item 1 Running (s)	7.14	6.86	7.43	7.22	6.91	7.53	−0.08	0.00	0.12	−0.32	0.15	−0.69	0.50	−0.06	0.84	0.44
Item 2 Stepping (s)	14.19	13.54	14.84	13.29	12.70	13.87	0.90	0.00	0.24	0.44	1.37	3.77	0.00	0.34	2.50	0.09
Item 3 Side jump (#)	25.26	23.50	26.93	28.57	26.58	30.51	−3.31	0.00	0.44	−4.18	−2.46	−7.50	0.00	−0.41	0.01	0.99
Item 4 Long jump (cm)	120.14	114.03	125.87	120.57	115.60	125.53	−0.43	− 0.04	1.73	−3.78	2.90	−0.25	0.81	−0.02	0.70	0.50
Item 5 Overhand (cm)	212.19	198.86	226.06	212.90	214.29	199.50	−0.71	−0.02	3.17	−7.26	5.46	−0.22	0.83	−0.01	4.48	0.02
Item 6 Throw and catch (max 50#)	36.40	32.99	39.51	38.22	35.06	41.14	−1.82	−0.02	0.62	−3.04	−0.67	−2.93	0.00	−0.13	1.21	0.30
Item 7 Bounce and catch (max 50#)	39.03	35.75	41.83	43.11	40.39	45.31	−4.08	0.00	0.67	−5.52	−2.78	−6.08	0.00	−0.33	1.58	0.21
Item 8 Jump (max 20#)	19.08	18.64	19.44	19.61	19.35	19.82	−0.53	0.00	0.19	−0.93	−0.15	−2.74	0.01	−0.11	2.21	0.12
Item 9a Hop Right (max 20#)	14.96	13.40	16.31	16.01	14.75	17.21	−1.06	0.00	0.36	−1.78	−0.35	−2.92	0.01	−0.11	0.47	0.63
Item 9b Hop Left (max 20#)	13.89	12.17	15.43	14.61	13.06	16.10	−0.72	0.00	0.46	−1.65	0.15	−1.56	0.13	−0.17	0.10	0.91
Item 10a Static balance (max 60s) $	54.85	51.38	57.80	55.83	52.42	58.67	−0.98	0.01	1.02	−2.06	0.93	−0.96	0.35	−0.09	0.40	0.53
Item 10b Dynamic balance (max 32#)	26.18	24.54	27.54	26.63	25.32	27.82	−0.44	0.01	0.45	−1.35	0.46	−0.98	0.35	−0.04	2.59	0.08

Bootstrap results are based on 5000 bootstrap samples; CI Confidence Interval, BCa Bias Corrected and accelerated bootstrap; $: Data from Ghana and the Netherlands; s: item measured in seconds; cm: item measured in centimeters; #: item measured in number

ISSN: 1471-2431