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. 2007 Dec;2(4):575–583.

Figure 1.

Figure 1

Median (interquartile range) circulating levels of insulin-like growth factor I (IGF-I, expressed in μg/l) at baseline, at the peak and 2 and 30 minutes following a symptom-limited peak exercise test in hospitalized patients with COPD (Panel A) and clinically stable patients with COPD (Panel B). Median (interquartile range) circulating levels of IGF-I at baseline, at the end and 2 and 30 minutes following a symptom-limited constant-work-rate endurance test in hospitalized patients with COPD (Panel C) and clinically stable patients with COPD (Panel D).