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. 2020 Aug 27;17(17):6257. doi: 10.3390/ijerph17176257

Table 4.

Descriptive statistics (mean ± standard deviation) and partial correlation analysis of the clean swimming segment time with underlying components.

Segments and Factors Total r; p-Value Lap 1 r; p-Value Lap 2 r; p-Value Lap 3 r; p-Value Lap 4 r; p-Value
Clean swimming time (s) 25.24 ± 1.18 n.a. 3.36 ± 0.16 n.a. 7.04 ± 0.36 n.a. 7.28 ± 0.35 n.a. 7.57 ± 0.35 n.a.
Mean cycle velocity (m/s) 1.41 ± 0.06 −0.966; <0.001 1.51 ± 0.07 −0.885; <0.001 1.43 ± 0.07 −0.919; <0.001 1.38 ± 0.07 −0.976; <0.001 1.32 ± 0.06 −0.968; <0.001
Mean cycle length (m/cycle) 1.67 ± 0.11 −0.174; 0.535 1.71 ± 0.11 0.107; 0.704 1.71 ± 0.13 −0.094; 0.740 1.68 ± 0.12 −0.189; 0.499 1.58 ± 0.13 −0.138; 0.625
Mean cycle rate (cycles/min) 50.89 ± 3.87 −0.392; 0.149 53.28 ± 4.01 −0.472; 0.076 50.33 ± 4.45 −0.426; 0.113 49.62 ± 4.04 −0.401; 0.138 50.32 ± 4.40 −0.322; 0.241
Number of cycles 25.21 ± 1.63 0.247; 0.376 3.97 ± 0.21 0.025; 0.930 6.87 ± 0.48 0.167; 0.551 7.00 ± 0.49 0.256; 0.357 7.37 ± 0.57 0.234; 0.401

Note: n.a.—it does not apply. p < 0.05 together with its corresponding r is bolded. Pearson correlation coefficients with clean swimming time, and mean cycle velocity is partial correlation coefficients with transition velocity for the respective laps as control variable. Spearman’s rho rank correlation coefficients for mean cycle length and number of strokes on lap 1 with clean swimming time.