Ammar Achraf, Turki Mouna, Chtourou Hamdi, Hammouda Omar, Trabelsi Khaled, Kallel Choumous, Abdelkarim Osama, Hoekelmann Anita, Bouaziz Mohamed, Ayadi Fatma, Driss Tarak, Souissi Nizar
Research Unit: Education, Motricité, Sport et Santé, UR15JS01, High Institute of Sport and Physical Education of Sfax, University of Sfax, Sfax, Tunisia.
Institute of Sport Science, Otto-von-Guericke-University Magdeburg, Magdeburg, Germany.
PLoS One. 2016 Oct 20;11(10):e0160305. doi: 10.1371/journal.pone.0160305. eCollection 2016.
The aim of this study was to investigate the effect of natural Pomegranate juice supplementation on performance and acute and delayed responses of muscle soreness and biomarkers of muscle damage after a weightlifting training session.
Nine elite weightlifters (21±0.5 years) performed two Olympic-Weightlifting-sessions after either placebo (PLA) or natural pomegranate juice (POMj) supplementations. Heart rate, blood pressure and blood samples (hematological parameters, muscle damage and C-reactive protein (CRP)) were collected at rest, 3min and 48h after each session. Weightlifting performance, RPE, and DOMS were also assessed after each training session.
T-test showed higher performance (+8.30%) and lower RPE values (-4.37%) using POMj supplementation (p<0.05) in comparison with PLA. For the DOMS values, a significant improvement (13.4%) was shown only for the knee extensors (p<0.01) using the POMj. Compared to PLA condition, POMj attenuated the acute (i.e., 3min) increase of systolic blood pressure (SBP), HR, CK and LDH (p<0.05; -4.46%, -1.81%, -8.75%, -1.64%, respectively) and blunted the significant increase of ASAT, PAL and CRP (p>0.05). Additionally, during the 48h following the training session, POMj improved the recovery kinetic of SBP (p<0.01, 7.97%), CK (p<0.001, 11.34%), LDH (p<0.05, 7.30%) and ASAT (p<0.05, 6.77%). Indeed, the present study showed that 48h of recovery associated to natural POMj supplementation was sufficient to reach the resting values of the selected muscle damage markers after intensive training session.
Natural POMj seems to ameliorate the capacity to adhere to an intensive training program. Therefore, elite weightlifters are advised to use natural POMj during intensive training program and competition to accelerate muscle recovery.
ClinicalTrials.gov NCT02697903.
本研究旨在调查补充天然石榴汁对举重训练课后的运动表现、肌肉酸痛的急性和延迟反应以及肌肉损伤生物标志物的影响。
九名精英举重运动员（21±0.5岁）在补充安慰剂（PLA）或天然石榴汁（POMj）后进行了两次奥运会举重训练课。在每次训练课结束后的静息状态、3分钟和48小时采集心率、血压和血液样本（血液学参数、肌肉损伤和C反应蛋白（CRP））。每次训练课后还评估了举重表现、主观用力感觉（RPE）和延迟性肌肉酸痛（DOMS）。
与安慰剂组相比，使用POMj补充剂时的t检验显示运动表现更高（+8.30%），RPE值更低（-4.37%）（p<0.05）。对于DOMS值，仅在使用POMj的情况下，膝伸肌显示出显著改善（13.4%）（p<0.01）。与安慰剂组相比，POMj减轻了收缩压（SBP）、心率（HR）、肌酸激酶（CK）和乳酸脱氢酶（LDH）的急性（即3分钟）升高（p<0.05；分别为-4.46%、-1.81%、-8.75%、-1.64%），并减弱了谷草转氨酶（ASAT）、碱性磷酸酶（PAL）和CRP的显著升高（p>0.05）。此外，在训练课后的48小时内，POMj改善了SBP（p<0.01，7.97%）、CK（p<0.001，11.34%）、LDH（p<0.05, 7.30%）和ASAT（p<0.05, 6.77%）的恢复动力学。事实上，本研究表明，与补充天然POMj相关的48小时恢复足以在高强度训练课后达到所选肌肉损伤标志物的静息值。
天然POMj似乎能改善坚持高强度训练计划的能力。因此，建议精英举重运动员在高强度训练计划和比赛期间使用天然POMj以加速肌肉恢复。
ClinicalTrials.gov NCT02697903。
