Iron clubheads can be classified as blades or perimeter-weighted, depending on the distribution of their mass. Despite the widely held views that perimeter-weighting can offer performance benefits for lesser skilled players, a direct comparison with players using these two clubhead types has not been thoroughly investigated. The aims of the study were to determine differences in clubhead presentation and ball launch between a blade 5-iron and a cavity-back 5-iron in a mixed cohort of golfers and examine trends in central tendency and variability in relation to skill for males using the blade club. Nine clubhead presentation variables and six ball launch variables were measured for 96 participants hitting shots from natural turf with each of the clubs. Group means for club effect were analysed statistically using an independent samples approach, whilst a rank-based nonparametric test was used to determine significant trends between handicap categories and ball launch conditions for the male cohort. The cavity-back displayed higher effective loft, lower effective lie and a tendency to have ball strikes closer to the centre. Higher values were also noted for the cavity-back for vertical launch angle and total spin. As expected, higher handicap male golfers showed lesser consistency and displayed slower ball speeds and lower efficiency than the more skilled players. Together these results concur with the findings in Part I in support of the theory of ‘forgiveness’ associated with cavity-back clubs, whilst also highlighting the over-riding importance of skill level on performance.

铁质杆头可根据其质量分布分为叶片或周边重量。尽管有广泛的观点认为外围权重可以为技术水平较低的球员带来性能上的好处，但是与使用这两种杆头类型的球员进行的直接比较尚未得到彻底研究。该研究的目的是确定高尔夫球手混合组中的五号桨铁杆和后背五号铁杆的杆头表现和发球的差异，并检查与男性技能有关的中心趋势和变异性趋势刀片俱乐部。测量了96个参与者用九个球杆从自然草皮击球的九个杆头表现变量和六个球发射变量。使用独立样本方法对俱乐部效应的分组均值进行统计分析，同时使用基于等级的非参数检验来确定男性队列的障碍类别和发球条件之间的显着趋势。后仰洞显示出更高的有效杆面倾角，更低的有效谎言以及使球击更靠近中心的趋势。对于垂直发射角度和总自旋角，后腔也有较高的值。正如预期的那样，与较熟练的选手相比，障碍较高的男性高尔夫球手表现出的一致性较低，球速较慢，效率较低。这些结果与第一部分的研究结果相吻合，以支持与后背球杆相关的“宽恕”理论，同时也强调了技能水平对表现的压倒一切的重要性。