Fig. 2From: Feasibility and pilot study of passive heat therapy on cardiovascular performance and laboratory values in older adultsLine graph representation of changes in VO2 max from pre- to post-intervention in the 15 subjects. There was no statistical difference in VO2 max from the first exercise testing prior to the hot tub sessions to the last exercise testing following the hot tub sessions (− 0.20 (95% CI − 1.3, 1.1))Back to article page