Buscà Bernat, Morales Jose, Solana-Tramunt Mònica, Miró Adrià, García Mario
Department of Sports Sciences, Ramon Llull University, FPCEE Blanquerna, Barcelona, Spain.
J Strength Cond Res. 2016 Apr;30(4):1102-10. doi: 10.1519/JSC.0000000000001192.
Recent studies have investigated the ergogenic effects of different types of mouthguards. There is evidence of the benefits of clenching customized mouthpieces on force and power development. The phenomenon called concurrent activation potentiation (CAP) promoted in jaw clenching seems to enhance the muscular strength and power in maximal isometric contractions and powerful actions in sport. Moreover, a bite-aligning mouthpiece may promote a more aligned and powerful clench. The objective of the present study was to investigate the effects of jaw clenching while wearing a customized bite-aligning mouthpiece (MP) on jump ability and isometric maximal strength tests in contrast to 2 other conditions: nonjaw clenching (NON-JAW) and jaw clenching without the mouthpiece (JAW). A within-subjects design was used to assess the jump performance and the maximal isometric force in 28 physically active male subjects. Statistical analyses revealed significantly higher performance in JAW and NON-JAW conditions for handgrip force (HG-peakforce) and all variables of the back-row exercise (BRW) and countermovement vertical jump (CMVJ) (p ≤ 0.05). Significant differences between NON-JAW and JAW were found for HG-peakforce (p ≤ 0.05). These findings suggest that it is advisable to use a customized bite-aligning mouthpiece to improve strength and power performance.
最近的研究调查了不同类型护齿器的增强运动能力的效果。有证据表明，咬紧定制的咬嘴对力量和功率发展有益。在咬牙时出现的所谓同步激活增强（CAP）现象似乎能增强最大等长收缩时的肌肉力量和功率，以及运动中的强力动作。此外，咬合对齐咬嘴可能会促进更对齐、更有力的咬紧。本研究的目的是，与另外两种情况相比，即不咬牙（NON-JAW）和不戴咬嘴咬牙（JAW），研究佩戴定制的咬合对齐咬嘴（MP）时咬牙对跳跃能力和等长最大力量测试的影响。采用受试者内设计评估28名身体活跃的男性受试者的跳跃表现和最大等长力量。统计分析显示，在JAW和NON-JAW条件下，握力（HG-peakforce）以及后排练习（BRW）和反向移动垂直跳跃（CMVJ）的所有变量的表现均显著更高（p≤0.05）。在NON-JAW和JAW之间，HG-peakforce存在显著差异（p≤0.05）。这些发现表明，使用定制的咬合对齐咬嘴来提高力量和功率表现是可取的。
