田径竞赛规则中规定：掷标枪时手必须握在标枪的把手处（缠绳的地方）。否则成绩无效。这样规定有两个作用：其一，从裁判角度来说，规定了运动员在相同条件下进行比赛；其二，从技术角度来说，对提高运动成绩有促进作用。正确的握枪有以下几项好处：（一）握住线绳部位，可以 Athletics rules of the game stipulates: Hand throwing javelin must be held in the javelin handle (tangle place). Otherwise the result is invalid. Such provisions have two functions: First, from the perspective of the referee, the provisions of the athletes under the same conditions for the competition; Second, from a technical point of view, to improve the performance of sports has contributed. The correct guns have the following advantages: (a) hold the line parts, you can