Fig. 6.

Finger temperature after 90 min, or at termination, plotted against the metabolic energy production during the hard work period (not available for test 9 and 12). Dashed vertical line shows the critical threshold for finger skin temperature at 15°C. Black markers are subjects in first part of test (allowed to move fingers) grey markers are subjects from second part of test (instructed not to move fingers). The dotted line is the least square fit line for finger temperatures above 15°C. Asterisk mark is test 10, which is the only subject from the second group with temperature above 15°C.