Cardiovascular and thermal strain during 3–4 days of a metabolically demanding cold-weather military operation

Daily energy expenditures were among the highest observed for a military training exercise, with moderate exercise intensity levels (~65% age-predicted maximal HR) observed. The short-term cold-weather training did not elicit high CV and <i>T</i>_pill strain. <i>T</i>_fing and <i>T</i>_toe were also well maintained while skiing, but decreased to values associated with thermal discomfort at rest.