Fig. 3: Associations between spaceflight-induced changes in post-breakfast substrate oxidation and both body composition changes and inflight exercise.
From: Substrate metabolism in male astronauts onboard the International Space Station: the ENERGY study

Scatterplots for the relationships of spaceflight-induced changes in post-breakfast carbohydrate lipid oxidation incremental area under the curve (iAUC) and ΔRQ with FM changes (a–c, respectively), FFM changes (d–f, respectively) and self-reported inflight exercise (g–i, respectively). The “changes” term refers to the difference between inflight and ground values. Least square regression lines are plotted with their 95% confidence interval (gray area). iAUC incremental area under curve over the 260 min period, ΔRQ difference between maximal post meal RQ and fasting RQ. a–d, f–i: inflight data from 10 subjects.