Assessed via use of the six bipolar scales of the SURG-TLX , we found differences in task workload between the hot and cold conditions in the areas of physical demands ( hot 10 [ 3-12 ] , cold 5 [ 2.5-9 ] , P = .013 ) and distractions ( hot 8 [ 3.5-15 .5 ] , cold 3 [ 1.5-5 .5 ] , P = .001 ) .