Abstract：
OBJECTIVE: This study assessed the reliability and load-velocity profiles of 3 different landmine-punch-throw variations (seated without trunk rotation, seated with trunk rotation, and standing whole body) with different loads (20, 22.5, and 25.0 kg), all with the dominant hand and nondominant hand.
METHODS: In a quasi-randomized order, 14 boxers (24.1 [4.3] y, 72.6 [10.1] kg) performed 3 repetitions of each variation with their dominant hand and their nondominant hand, with maximal effort and 3 minutes of interset rest. Peak velocity was measured via the GymAware Power Tool (Kinetic Performance Technologies). The interclass correlation coefficients and their 95% CIs were used to determine the intrasession reliability of each variation × load × hand combination. Additionally, a 2 (hand) × 3 (variation) repeated-measures analysis of variance assessed the load-velocity profile slope, and a 3 (variation) × 2 (hand) × 3 (load) repeated-measures analysis of variance assessed the peak velocity of each variation.
RESULTS: Most variations were highly reliable (intraclass correlation coefficient > .91), with the nondominant hand being as reliable or more reliable than the dominant hand. Very strong linear relationships were observed for the group average for each variation (R2 ≥ .96). However, there was no variation × hand interaction for the slope, and there was no main effect for variation or hand. Additionally, there was no interaction for the peak velocity, but there were main effects for variation, hand, and load (P < .01).
CONCLUSIONS: Each variation was reliable and can be used to create upper-body ballistic unilateral load-velocity profiles. However, as with other research on load-velocity profile, individual data allowed for more accurate profiling than group average data.
METHODS: In a quasi-randomized order, 14 boxers (24.1 [4.3] y, 72.6 [10.1] kg) performed 3 repetitions of each variation with their dominant hand and their nondominant hand, with maximal effort and 3 minutes of interset rest. Peak velocity was measured via the GymAware Power Tool (Kinetic Performance Technologies). The interclass correlation coefficients and their 95% CIs were used to determine the intrasession reliability of each variation × load × hand combination. Additionally, a 2 (hand) × 3 (variation) repeated-measures analysis of variance assessed the load-velocity profile slope, and a 3 (variation) × 2 (hand) × 3 (load) repeated-measures analysis of variance assessed the peak velocity of each variation.
RESULTS: Most variations were highly reliable (intraclass correlation coefficient > .91), with the nondominant hand being as reliable or more reliable than the dominant hand. Very strong linear relationships were observed for the group average for each variation (R2 ≥ .96). However, there was no variation × hand interaction for the slope, and there was no main effect for variation or hand. Additionally, there was no interaction for the peak velocity, but there were main effects for variation, hand, and load (P < .01).
CONCLUSIONS: Each variation was reliable and can be used to create upper-body ballistic unilateral load-velocity profiles. However, as with other research on load-velocity profile, individual data allowed for more accurate profiling than group average data.
摘要：
目的：这项研究评估了3种不同的地雷-击打-投掷变化的可靠性和载荷速度曲线（在没有躯干旋转的情况下就座，用躯干旋转坐着，和站立的整个身体）具有不同的负载（20、22.5和25.0kg），都是用优势手和非优势手。
方法：按照准随机顺序，14拳击手（24.1[4.3]y，72.6[10.1]kg）用他们的优势手和他们的非优势手重复进行3次每个变异，最大的努力和3分钟的休息。通过GymAware电动工具（动力学性能技术）测量峰值速度。使用类间相关系数及其95％CIs来确定每种变化×载荷×手组合的进动可靠性。此外,2(手)×3(变化)重复测量方差分析评估了载荷-速度剖面斜率，和3（变化）×2（手）×3（负载）重复测量方差分析评估了每个变化的峰值速度。
结果：大多数变化是高度可靠的（组内相关系数>.91），非优势手与优势手一样可靠或更可靠。对于每个变异（R2≥.96），组平均值观察到非常强的线性关系。然而,斜坡没有变化×手相互作用，变异或手部没有主要影响。此外,峰值速度没有相互作用，但是变异有主要影响，手,和负载（P<0.01）。
结论：每种变化都是可靠的，可用于创建上身弹道单边载荷-速度曲线。然而,与其他有关载荷速度分布的研究一样，与组平均数据相比，个人数据允许更准确的分析。
方法：按照准随机顺序，14拳击手（24.1[4.3]y，72.6[10.1]kg）用他们的优势手和他们的非优势手重复进行3次每个变异，最大的努力和3分钟的休息。通过GymAware电动工具（动力学性能技术）测量峰值速度。使用类间相关系数及其95％CIs来确定每种变化×载荷×手组合的进动可靠性。此外,2(手)×3(变化)重复测量方差分析评估了载荷-速度剖面斜率，和3（变化）×2（手）×3（负载）重复测量方差分析评估了每个变化的峰值速度。
结果：大多数变化是高度可靠的（组内相关系数>.91），非优势手与优势手一样可靠或更可靠。对于每个变异（R2≥.96），组平均值观察到非常强的线性关系。然而,斜坡没有变化×手相互作用，变异或手部没有主要影响。此外,峰值速度没有相互作用，但是变异有主要影响，手,和负载（P<0.01）。
结论：每种变化都是可靠的，可用于创建上身弹道单边载荷-速度曲线。然而,与其他有关载荷速度分布的研究一样，与组平均数据相比，个人数据允许更准确的分析。
