建議除了中文外，也去查詢原文
As a swift action, the wearer of these rough leather gauntlets can expand her hands to twice normal size and harden to the consistency of hardwood. This transformation lasts for up to 20 rounds per day, though they need not be consecutive rounds. If the wearer hits with an unarmed strike or natural attack using her enlarged hands, she may attempt to bull rush her opponent as a free action.
你可以看到只是手變成兩倍大，而且原文用字也不是一般能讓體型增大的用字法。
以下是變巨術原文第一段：
This spell causes instant growth of a humanoid creature, doubling its height and multiplying its weight by 8. This increase changes the creature’s size category to the next larger one. The target gains a +2 size bonus to Strength, a -2 size penalty to Dexterity (to a minimum of 1), and a -1 penalty on attack rolls and AC due to its increased size.
請注意紅色這段：如果是在遊戲數據上把體型增大，一般都會使用「size category」。當然，隨著各本書的作者不同，大家用字可能會略有差異，但巨拳護手這邊很明顯的指示單純的描述用字，而沒有遊戲數據上的意義。
