The Joint Airlock is designed to store two full EMUs, 1 short EMU, and 2 Orlan suits. EMU is the NASA suit, Orlan is the Russian suit, and a short EMU is the upper torso part of the EMU suit. read more
Therefore, the astronaut does not need to exert to hold the suit in any position. Hard suits can also operate at higher pressures which would eliminate the need for an astronaut to pre-breathe oxygen to use a 34 kPa (4.9 psi) space suit before an EVA from a 101 kPa (14.6 psi) spacecraft cabin. read more