Oliver-López Alejandro, Brandt Tom, Schmidt Annette, Sabido Rafael
Sport Research Center, Miguel Hernandez University, Elche, Spain -
Department of Sports Sciences, Faculty of Medicine, Health and Sports, Universidad Europea de Madrid, Madrid, Spain -
J Sports Med Phys Fitness. 2025 Aug;65(8):1030-1038. doi: 10.23736/S0022-4707.25.16660-7. Epub 2025 Mar 25.
Strength coaches use the repetition maximum (1RM) of key movements to predict the load for derivate exercises in sports like weightlifting or CrossFit (CF). Although this is a fundamental CF exercise, no prediction equations have been established for the thruster (TH). Therefore, this study aimed to determine the relationship between the clean and jerk (CJ) and TH 1RM in CF athletes and analyze the influence of gender and experience.
Seventy-three participants (40 men; 33 women; age: 30.1±8.2 years) with ≥3 months of CF experience were enrolled in this study. The CJ and TH 1RM were tested in 2 separate sessions. Additionally, anthropometric data and CF experience were taken. Linear correlation and regression analyses were applied to investigate the relationship between both exercises. For further analyses, participants were subdivided by gender and CF-experience (men and women experienced [EM; EW]): ≥24 months CF-training, and (men and women beginners [BM; BW]): <24 months CF-training.
Very high significant (P<0.001) correlations were found between CJ and TH (r=0.98) across all participants and for EM (r=0.98), BM (r=0.96), EW (r=0.95), and BW (r=0.90). Similarly, the coefficient of determination was high to very high for all participants (R=0.97) and for all the groups; EM (R=0.97), BM (R=0.91), EW (R=0.91), and BW (R=0.82). Prediction equations were calculated for EM (TH=0.81TH+9.98), BM (TH=0.80TH+10.23), EW (TH=0.63TH+17.39), and BW (TH=0.96TH+-2.21).
This is the first study on CF athletes that guides prescribing individualized loads in the TH which is essential to induce appropriate training stimuli to achieve the desired adaptions.
力量教练使用关键动作的重复最大值（1RM）来预测举重或CrossFit（CF）等运动中衍生练习的负荷。虽然这是一项基本的CF练习，但尚未建立针对推举（TH）的预测方程。因此，本研究旨在确定CF运动员的挺举（CJ）和TH 1RM之间的关系，并分析性别和经验的影响。
本研究招募了73名有≥3个月CF经验的参与者（40名男性；33名女性；年龄：30.1±8.2岁）。CJ和TH 1RM在两个独立的时间段进行测试。此外，还采集了人体测量数据和CF经验。应用线性相关和回归分析来研究两种练习之间的关系。为了进一步分析，参与者按性别和CF经验进行细分（男性和女性有经验者[EM；EW]）：CF训练≥24个月，以及（男性和女性初学者[BM；BW]）：CF训练<24个月。
在所有参与者以及EM（r = 0.98）、BM（r = 0.96）、EW（r = 0.95）和BW（r = 0.90）中，CJ和TH之间均发现非常高的显著相关性（P<0.001）。同样，所有参与者（R = 0.97）以及所有组；EM（R = 0.97）、BM（R = 0.91）、EW（R = 0.91）和BW（R = 0.82）的决定系数都很高到非常高。计算了EM（TH = 0.81TH + 9.98）、BM（TH = 0.80TH + 10.23）、EW（TH = 0.63TH + 17.39）和BW（TH = 0.96TH + -2.21）的预测方程。
这是第一项针对CF运动员的研究，该研究指导了在TH中规定个性化负荷，这对于诱导适当的训练刺激以实现期望的适应性至关重要。
