Figure 1From: Characteristics and determinants of endurance cycle ergometry and six-minute walk distance in patients with COPD Frequency distribution of CET-Tend and 6MWD in patients with COPD. (A) Frequency distribution of 75% of peak work rate CET-Tend. The number of individuals for each bin of duration time is represented by the height of each column (y-axis). Each bin represents 1Â minute (x-axis). Only 51 (2.5%) of the 2053 patients who met the inclusion criteria reached the 20Â minute maximal duration. (B) frequency distribution of six minute walking distance (6MWD). The number of individuals for each bin of walking meters is represented by the height of each column (y-axis). Each bin represents 1Â minute (x-axis).Back to article page