Reproducibility of an aerobic endurance test for nonexpert swimmers

Figures & data

Table 1 Laps performed during the Progressive Swim Test for nonexpert swimmers

Lap	Time	m/s	k/h
1	28″30	0.88	3.18
2	27″30	0.92	3.30
3	26″30	0.50	3.42
4	25″30	0.99	3.56
5	24″30	1.03	3.70
6	23″30	1.07	3.86
7	22″30	1.12	4.04
8	21″30	1.17	4.23
9	20″30	1.23	4.43
10	19″30	1.30	4.66
11	18″30	1.37	4.92
12	17″30	1.45	5.20
13	16″30	1.53	5.52
14	15″30	1.63	5.88
15	14″30	1.75	6.29
16	13″30	1.88	6.77

Note: This table was used as a monitoring aid by evaluators during the execution of the Progressive Swim Test.

Abbreviations: m/s, meters per second; k/h, kilometers per hour.

Figure 1 Schematic visual of the Progressive Swim Test for nonexpert swimmers.

Table 2 Descriptive values of variables applied to nonexpert swimmers

Variables	Day	Mean	Standard deviation
BHR (bpm)	1	80.09	7.32
	2	79.26	6.45
AHR (bpm)	1	173.82	9.79
	2	178.44	6.77
RPE	1	8.40	0.78
	2	8.25	0.72
NLP	1	6.86	1.36
	2	7.50	1.79

Abbreviations: BHR, before (test) heart rate; AHR, after (test) heart rate; RPE, rate of perceived exertion; NLP, number of laps performed; bpm, beats per minute.

Table 3 Paired differences between days of the variables applied to nonexpert swimmers

Variables	Mean	SD	SEM	95% CI		t-test	P-value
				Lower	Upper
BHR	2.56	6.31	1.49	−0.58	5.69	1.72	0.10
AHR	−4.50	7.64	1.91	−8.57	−0.43	−2.36	0.03^*
RPE	0.05	0.78	0.18	−0.32	0.43	0.29	0.77
NLP	−0.48	0.68	0.15	−0.77	−0.17	−3.21	>0.01^*

Note:

* Significant difference (P ≤ 0.05).

Abbreviations: SD, standard deviation; SEM, standard error measurement; 95% CI, confidence interval; BHR, before (test) heart rate; AHR, after (test) heart rate; RPE, rate of perceived exertion; NLP, number of laps performed; bpm, beats per minute.

Table 4 Values within and between classes of variables applied to nonexpert swimmers

Variables	r	P	ICC (95% CI)	P	CV
BHR (bpm)	0.55	0.02^*	0.706 (0.214/0.890)	<0.01^*	5.06%
AHR (bpm)	0.51	0.04^*	0.674 (0.067/0.886)	0.02^*	3.07%
RPE	0.50	0.03^*	0.665 (0.129/0.871)	0.01^*	5.14%
NLP	0.92	<0.01^*	0.948 (0.872/0.979)	<0.01^*	2.35%

Note:

* Significant difference (P ≤ 0.05).

Abbreviations: r, Pearson’s linear correlation; ICC, intraclass coefficient correlation; 95% CI, confidence interval; CV, coefficient of variation; BHR, before (test) heart rate; AHR, after (test) heart rate; RPE, rate of perceived exertion; NLP, number of laps performed; bpm, beats per minute.

Figure 2 Representation of the differences between paired measurements of before (test) heart rate (BHR), after (test) heart rate (AHR), rate of perceived exertion (RPE), and number of laps performed (NLP) against their mean values.