The purpose of the present study was to compare block periodization (BP) and daily undulating periodization (DUP) in eliciting changes in strength, jumping performance and throwing velocity in young male handball players. Fifteen players, of the same competitive level, were assigned to one of the periodization groups (DUP=9; BP=6). Pre- and post-tests included a one repetition maximum (1 RM) back squat, countermovement jump (CMJ), triple jump with the left and right leg, 20 m speed test, standing medicine ball throw, 7 m standing throw, and 9 m jumping throw. Strength training was performed twice a week throughout an 8-week period. The BP group performed training phases in the following order: hypertrophy, power strength and explosive strength; DUP alternated every week two sessions with a different focus. Total volume and intensity during the 8-week period were equal in both training groups. Despite both groups significantly improved 1 RM squat (33.3%, effect size [ES]=1.48 for DUP and 17.4%, ES=1.40 for BP) and triple jump (4-6.3%, ES=0.32-0.51 for DUP and 9.7-12.7%, ES=1.40 for BP) performance, greater gains (ES=0.96) were detected in DUP for the 9 m throwing velocity. No significant changes were found in either group for the 20 m sprint and CMJ. It can be concluded that both periodization programs elicited significant improvements in maximal strength and jumping performance in young male handball players, while DUP was more effective than BP on throwing velocity. Key words: strength, youth, team sport, training

中文翻译：

---

阻滞和每日起伏分期对年轻男性手球运动员神经肌肉性能的影响

本研究的目的是在引起年轻男性手球运动员力量，跳跃表现和投掷速度变化的方面，比较阻滞周期（BP）和每日起伏周期（DUP）。将15个具有相同竞争水平的玩家分配到一个周期分组中（DUP = 9； BP = 6）。赛前和赛后测试包括最大重复次数（1 RM）后蹲，反跳（CMJ），左腿和右腿三跳，20 m速度测试，站立式药球投掷，7 m站立式投掷和9米跳投。在整个8周的时间内，每周进行两次力量训练。BP组按以下顺序进行训练阶段：肥大，力量强度和爆发力；DUP每周轮流召开两次会议，重点不同。两个训练组在8周内的总体积和强度均相等。尽管两组均显着改善了1 RM下蹲（33.3％，DUP的效果值[ES] = 1.48，BP​​的17.4％，ES = 1.40）和三级跳远（4-6.3％，DUP的ES = 0.32-0.51和9.7- 12.7％，对于BP，ES = 1.40）性能，在9 m投掷速度下，在DUP中检测到更大的增益（ES = 0.96）。对于20 m冲刺和CMJ，两组均未发现明显变化。可以得出结论，这两个阶段化程序都引起了年轻男性手球运动员的最大力量和跳跃性能的显着提高，而DUP在投掷速度上比BP更有效。关键词：力量，青年，团队运动，训练 DUP为48，而17.4％，BP为ES = 1.40）和三级跳远（4-6.3％，DUP为ES = 0.32-0.51，BP为9.7-12.7％，ES = 1.40）性能，增益更大（ES = 0.96）在DUP中检测到9 m的投掷速度。对于20 m冲刺和CMJ，两组均未发现明显变化。可以得出结论，这两个阶段化程序都引起了年轻男性手球运动员的最大力量和跳跃性能的显着提高，而DUP在投掷速度上比BP更有效。关键词：力量，青年，团队运动，训练 DUP为48，而17.4％，BP为ES = 1.40）和三级跳远（4-6.3％，DUP为ES = 0.32-0.51，BP为9.7-12.7％，ES = 1.40）性能，增益更大（ES = 0.96）在DUP中检测到9 m的投掷速度。对于20 m冲刺和CMJ，两组均未发现明显变化。可以得出结论，这两个阶段化程序都引起了年轻男性手球运动员的最大力量和跳跃性能的显着提高，而DUP在投掷速度上比BP更有效。关键词：力量，青年，团队运动，训练 可以得出结论，这两个阶段化程序都引起了年轻男性手球运动员的最大力量和跳跃性能的显着提高，而DUP在投掷速度上比BP更有效。关键词：力量，青年，团队运动，训练 可以得出结论，这两个阶段化程序都引起了年轻男性手球运动员的最大力量和跳跃性能的显着提高，而DUP在投掷速度上比BP更有效。关键词：力量，青年，团队运动，训练