The Effects of Three Correction Strategies of Errors on the Snatch Technique in 10-12-Year-Old Children: A Randomized Controlled Trial

Souissi, MA, Elghoul, Y, Souissi, H, Masmoudi, L, Ammar, A, Hamdi Chtourou, and Souissi, N. The effects of three corrections strategies of errors on the snatch technique in 10-12-year-old children: A randomized controlled trial. J Strength Cond Res 37(6): 1218-1224, 2023-Sports movement correction is one of the major problems for motor control and learning. Therefore, the purpose of the present study was to determine which of the 3 strategies, i.e., the self-observation method with direct instructions (SO-DI), self-observation alone (SO), or the direct instruction (DI), would be useful for correcting errors during the snatch technique. Forty-eight children with 2 months of experience were randomly assigned to one of 4 training conditions: SO-DI, SO, DI, or control. In this study, the experience lasted 15 sessions. Subjects completed the test sessions before (T-0) and after (T-1) 12 training sessions and a retention test session after 2 weeks (T-2). The Kinovea version 0.8.15 software was used to measure the kinematic parameters of weightlifting performance. After the training intervention, the data showed that the SO-DI group registered a greater improvement in all kinematic parameters compared with the SO, DI, and control groups, and this benefit was present 2 weeks later in the retention test (e.g., the horizontal displacement of the bar in the first pull with respect to the starting position [T1 vs. T0: +32.57 +/- 6.69%, d = 1.87, p < 0.001; T2 vs. T0: 25.07 +/- 11.55%, d = 1.32, p < 0.001] and the horizontal displacement of the bar between the receiving position and the reference line [T1 vs. T0: 24.34 +/- 29%, d = 1.17, p < 0.01; T2 vs. T0: 25.53 +/- 30.4%, d = 0.99, p < 0.01]). The results of the present study could have practical implications for physical education teachers because, even if practice is required to improve the technique, the effectiveness of the learning process is essential to enhance learner self-efficacy and motivation.

Automated summary

This study aimed to determine which correction strategy, self-observation with direct instruction, self-observation alone, or direct instruction, would be effective in correcting errors in the snatch technique of children aged 10-12. The results showed that the group using the self-observation method combined with direct instruction demonstrated greater improvement in all kinematic parameters compared to other groups, and this effect was still present in the retention test after 2 weeks.