不同力量练习对下肢双侧力亏损的影响

发布时间：2018-01-03 00:43

本文关键词：不同力量练习对下肢双侧力亏损的影响　出处：《北京体育大学》2016年博士论文　论文类型：学位论文

【摘要】：研究目的：双侧力亏损(BFD)是指单侧肢体发力之和大于双侧联合发力的现象。双侧力亏损是影响运动表现的潜在因素,通常用双侧肢体比值(BLR)反映。本研究拟研究不同力量练习对下肢双侧力亏损产生的影响,并观察下肢双侧力亏损现象的发生特点。研究方法：(1)本研究共招募205名健康青年受试者(含71名运动员)分别用等长和等动模式测试伸膝或蹬伸最大力量BLR。(2)分别研究八周、四周、一次性中等负荷力量训练和急性振动训练对下肢最大力量BLR的影响。研究结果：(1)男性等长和等动伸膝最大力量BLR分别为96.1%±8.8%和92.7%±7.8%,等动蹬伸最大力量BLR为88.7%±9.8%；女性等动伸膝最大力量BLR为91.5%±6.7%,均表现出双侧力亏损(P0.05)。男性等长蹬伸最大力量BLR为96.8%±12.8%未表现出双侧力亏损。(2)训练前存在双侧力亏损的受试者,八周中等强度深蹲训练后等长伸膝最大力量BLR增大(P0.05)；四周中等强度深蹲训练后等动伸膝最大力量BLR增大(P0.05)。(3)训练引起的伸膝最大力量BLR变化量与训练前最大力量BLR负相关(八周深蹲：r=-0.929,P0.05：八周弓步蹲：r=-0.934,P0.05：四周深蹲：r=-0.696,P0.05)；立定跳远成绩BLR与单腿六边形跳成绩正相关(左：r=0.404,P0.05；右：r=0.463,P0.05)。(4)振动热身后等动伸膝最大力量BLR为97.0%±5.7%高于普通热身后的90.2%±7.9%(P0.05)。研究结论：(1)本研究受试者普遍存在下肢双侧力亏损。(2)短期中等负荷深蹲训练能减少下肢双侧力亏损效应,训练前双侧亏损越大,训练后改变越明显。(3)急性振动刺激能减少下肢双侧力亏损效应。
[Abstract]:Objective: bilateral force deficit (BFDs) refers to the phenomenon that the sum of unilateral limb force is greater than that of bilateral combined force, and bilateral force deficit is a potential factor affecting the performance of movement. This study was designed to study the effects of different strength exercises on the lower extremity bilateral force deficit. In this study, 205 healthy young subjects (including 71 athletes) were recruited. Equal length and isokinetic mode were used to test the maximum strength of knee or pedal for eight weeks. Around. Effects of one-time moderate load strength training and acute vibration training on BLR of lower extremity maximum strength. The BLR of equal length and isokinetic extension of knee in male were 96.1% 卤8.8% and 92.7% 卤7.8%, respectively. The maximum BLR of isokinetic pedal extension was 88.7% 卤9.8; The maximum BLR of isokinetic knee extension in female was 91.5% 卤6.7%. All subjects showed bilateral force deficit (P0.05). The maximum strength BLR of male isometric pedal and extension was 96.8% 卤12.8%, which did not show bilateral force deficit before training. After eight weeks of moderate intensity squat training, the maximum strength BLR of equal-length extension of knee increased P0.05A; The maximum strength of isokinetic knee extension (BLR) increased after the middle intensity squat training. (P0.05) the change of the maximum strength BLR caused by the training was negatively correlated with the BLR of the maximal strength before training (P < 0.05). Eight weeks, squat: r-0.929. P0.05: eight weeks of bow squat: 1: 0. 934: P0. 05: squat around: 10%-0. 696 + P0. 05; The result of standing long jump (BLR) was positively correlated with the score of single-legged hexagonal jump (left: r = 0.404, P 0.05); Right: r: r = 0.463. The maximum strength of isokinetic knee extension after shaking warm up was 97.0% 卤5.7%, which was higher than that of 90.2% 卤7.9 after normal warm-up. 1) the subjects in this study generally have bilateral force deficit of lower limbs. 2) Short-term moderate load squat training can reduce the effect of bilateral force deficit of lower limbs. The greater the bilateral deficit before training, the more obvious the change after training.
【学位授予单位】：北京体育大学
【学位级别】：博士
【学位授予年份】：2016
【分类号】：G804.49

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