EFFECTS OF FRESH PINEAPPLE JUICE ON DELAYED ONSET MUSCLE SORENESS RECOVERY IN LOWER EXTREMITY MUSCLES
L. Haley, H. Pfundt, J. Tonkinson, S. Weiler, W.M. Silvers
Whitworth University, Spokane, WA
Pineapple contains important nutrients, such as bromelain and vitamin C (vit C), which have been used to reduce inflammation. Despite this, empirical evidence for pineapple juice (PJ) as a naturopathic mitigator of delayed onset muscle soreness (DOMS) is relatively unknown. PURPOSE: The purpose of this study was to evaluate the effects of fresh PJ on perceived pain and exercise performance after induced muscle damage. METHODS: Twenty healthy, moderately-active college students (18-24-y) were divided into control © and PJ groups. Participants completed baseline pain pressure threshold (PPT) and countermovement vertical jump (VJ) tests followed by a drop jump (DJ) exercise protocol (10 x 10 DJ, 1-min rest between sets). Fresh PJ supplementation was provided to the PJ group, which included three 100-g doses of PJ consumed within a 48-h period. The C group did not receive supplementation. PPT and VJ tests were completed 48-h following the first round of testing. Factorial ANOVAs (p ≤ 0.05) were utilized to determine the existence of significant differences between conditions for each dependent variable. RESULTS: As shown in Table 1, no significant differences were observed between PJ and C groups for PPT on rectus femoris (p = 0.487) and biceps femoris (p = 0.644) or for VJ performance (p =o.648). CONCLUSION: Under these research conditions, PJ did not mitigate perceived pain or exercise performance decrement after induced muscle damage. The primary explanation for the observed results may have been due to small effect sizes and low statistical powers due to small sample sizes. Future research should include a larger sample size, record muscle soreness at multiple points over time post-exercise and utilize PPT tests on multiple muscle groups.
Haley, L; Pfundt, H; Tonkinson, J; Weiler, S; and Silvers, WM
"EFFECTS OF FRESH PINEAPPLE JUICE ON DELAYED ONSET MUSCLE SORENESS RECOVERY IN LOWER EXTREMITY MUSCLES,"
International Journal of Exercise Science: Conference Proceedings: Vol. 8
, Article 3.
Available at: https://digitalcommons.wku.edu/ijesab/vol8/iss8/3