Effect of tart cherry juice supplement on lower extremity strength recovery performance after periodization resisted sled-based training

Abstract

In this study, we investigated the impact of tart cherry (TC) juice on the recovery of lower extremity strength and characteristic movements following periodic Resisted Sled-Based Training (RST). A cohort of 24 male college soccer players (average height, 179.8 ± 6.4 cm; weight 75.9 ± 5.3 kg; age, 22 ± 3 years) was recruited and divided into two groups. During the experimental period, their dietary intake was controlled. Specifically, they were instructed to consume TC juice or a placebo (70 mL twice daily) for three weeks, followed by periodic RST in the fourth week. Baseline assessments and evaluations were conducted immediately, as well as 24, 48 and 72 hours post-exercise, measuring various test indices including counter-movement jump (CMJ), Knee Flexion Seated Position at 90°, Knee Flexion Prone position at 90° and Nordic Hamstring. The findings show TC juice supplementation effectively mitigates the extent of lower extremity strength decline following high-intensity sprint training within a specific cycle. Furthermore, it accelerates lower extremity strength recovery during high-intensity sprint training, with observed variations between the left and right sides. These findings confirm that TC juice, along with other polyphenol-rich foods, contributes to enhanced recovery following high-intensity sprint training within a specific cycle.

Keywords

• tart cherry juice
• periodization
• resisted sled-based training (rst)
• lower extremity strength
• recovery