Attentional and visual demands for sprint performance in non-fatigued and fatigued conditions: reliability of a repeated sprint test

Table 3 Agreement data for heart rates, RPE scores and lactate concentrations obtained during a repeated (9 × 30 s) figure-of-eight sprint test with varying rest periods.* †‡

		Test	Retest	Mean difference	95% CL
Heart rates
Base measurement	P	76.9 (10.9)	79.9 (15.5)	-3.0	-13.4 - 7.4
	NFC	151.6 (10.1)	144.5 (16.9)	7.1	-0.4 - 14.5
	FC	186.9 (7.2)	184.1 (9.9)	2.8	-0.3 - 5.9
Attention-demanding task	P	80.3 (17.2)	78.8 (10.9)	1.5	-8.5 - 11.5
	NFC	145.6 (3.8)	142.8 (14.9)	2.8	-1.5 - 7.1
	FC	186.4 (9.2)	184.6 (8.4)	1.7	-1.0 - 4.4
Restricted vision	P	78.5 (11.4)	79.6 (9.9)	-1.1	-10.3 - 7.8
	NFC	148.2 (13.5)	141.3 (18.3)	6.9	-0.3 - 14.2
	FC	185.1 (7.6)	183.6 (8.1)	1.5	-0.2 - 3.1
RPE scores
Base measurement	P	8.3 (2.1)	8.0 (2.3)	0.3	-1.0 - 1.6
	NFC	13.2 (1.7)	12.6 (1.6)	0.6	-0.3 - 1.5
	FC	16.7 (1.6)	16.5 (1.4)	0.2	-0.2 - 0.6
Attention-demanding task	P	8.0 (2.4)	8.1 (2.3)	-0.1	-1.1 - 0.9
	NFC	11.8 (1.5)	12.1 (1.9)	-0.2	-1.4 - 1.0
	FC	15.2 (1.5)	15.8 (1.7)	-0.7	-1.6 - 0.2
Restricted vision	P	7.9 (2.1)	8.3 (2.4)	-0.4	-1.1 - 0.3
	NFC	12.5 (1.8)	12.6 (1.9)	-0.1	-1.0 - 0.9
	FC	15.7 (1.7)	16.2 (1.3)	-0.5	-1.3 - 0.3
Lactate concentrations
Base measurement	P	2.1 (1.3)	1.7 (0.6)	0.2	-0.1 - 0.4
	NFC	7.3 (1.8)	6.6 (2.5)	0.4	-0.4 - 1.1
	FC	10.3 (2.7)	9.8 (2.2)	0.2	-0.0 - 0.6
Attention-demanding task	P	1.9 (0.9)	1.9 (1.0)	-0.0	-0.3 - 0.3
	NFC	6.4 (2.0)	6.1 (1.5)	0.2	-0.4 - 0.7
	FC	9.5 (3.8)	8.4 (2.1)	0.6	-3.4 - 4.5
Restricted vision	P	1.8 (0.5)	1.5 (0.4)	0.1	-0.0 - 0.3
	NFC	6.1 (2.1)	5.8 (1.3)	0.2	-0.3 - 0.7
	FC	9.4 (2.8)	8.8 (1.8)	0.3	-0.1- 0.7

* 95% CL, 95% confidence limits; P, pre-test assessment; NFC, assessment at sprint 3; FC, assessment at the end of the sprint test.
^† Heart rates are expressed in beats·min^-1 and lactate concentrations as mmol·L^-1.
^‡ Values in parentheses are standard deviations.

ISSN: 1471-2474