The Effects of Different Training Frequencies on Students’ Sprint Speed and Lower Limb Strength Level

Key Points

• This research explores how different training frequencies affect high school students' sprint speed and lower limb explosive power.
• Controlled experimental design with pre-test and post-test.
• Participants included 60 male athletes divided into high-frequency and low-frequency training groups.
• High-frequency group trained 4 times per week; low-frequency group trained 2 times per week for 12 weeks.
• Sprint speed assessed with 30m and 50m runs; explosive power assessed through standing long jump and vertical jump.
• Statistical analyses performed using paired samples t-test and independent samples t-test.
• After intervention, the high-frequency group showed significantly greater improvements in 30m and 50m sprint times compared to the low-frequency group (p<0.001).
• Effect sizes for sprint speed were −2.08 and −2.64, indicating large effects.
• The high-frequency group also demonstrated significantly greater increases in standing long jump and vertical jump performance (p<0.001).
• Effect sizes for explosive power were 2.36 and 1.52, indicating large effects.

Abstract