Fig 1.
Experimental flow diagram and CONSORT 2025 flow diagram.
a: Experimental flow diagram, BLA: blood lactate, IPC: ischemic preconditioning. b: CONSORT 2025 flow diagram.
Table 1.
Basic information of the study subjects (N = 16).
Fig 2.
The box plot scatter diagram illustrates the basic indicators and sports intensity.
a: Blood lactate levels during various states: at rest, postintervention, prior to the specific test, three minutes after the specific test, and ten minutes after the specific test. The label ‘Post-intv’ refers to blood lactate levels measured after the experimental intervention. The box in the figure represents the mean ± standard deviation, where the white dots within the box represent the average value, and the horizontal line denotes the median. Each scattered point corresponds to an individual sample value. b: The figure illustrates the average heart rates recorded during three distinct conditions: the quiet state, warm-up kicks, and specific tests. Peak HR: Peak heart rate during testing. c: The graph illustrates the blood lactate clearance rate from 3--10 minutes post-test. * indicates that the data conform to a normal distribution. A paired sample t test was employed, revealing a significant difference between the trials, with a p value of less than 0.05.
Fig 3.
Changes and comparison chart of oxygen uptake.
a: The x-axis represents time, and the y-axis represents oxygen uptake, including changes in oxygen uptake during the FSKT test and the 6-minute post-test. b: The boxplot scatter diagram illustrates the oxygen uptake accumulated at each stage of the special tests. *p < 0.05 indicates a significant difference when comparing IPC with SHAM; #p < 0.1 suggests a marginally significant difference between IPC and SHAM. The box in the diagram represents the mean ± standard deviation, the dots within the box denote the mean, and the horizontal line indicates the median. Each scatter point corresponds to the value of an individual sample.
Fig 4.
Special sports test performance boxplot scatter diagram.
In the figure, Panel a presents the total number of kicks across each group of FSKTs, and a two-factor repeated measures analysis of variance was conducted to compare the effects of the two intervention methods. The P value represents the results of the simple effects between the two intervention methods. Panels b, c, and d present the results of each round of kicking for the first, second, and third groups of FSKT, respectively. *p < 0.05 indicates a significant difference when comparing IPC with SHAM; #p < 0.1 suggests a marginally significant difference between IPC and SHAM. The box in the figure represents the mean ± standard deviation, while the dots within the box signify the mean, and the horizontal line indicates the median. Each scattered point corresponds to the value of an individual sample.
Table 2.
Statistics of the energy metabolism of each energy supply system.