Premium
Breath acetone to monitor life style interventions in field conditions: An exploratory study
Author(s) -
Samudrala Devasena,
Lammers Gerwen,
Mandon Julien,
Blanchet Lionel,
Schreuder Tim H.A.,
Hopman Maria T.,
Harren Frans J.M.,
Tappy Luc,
Cristescu Simona M.
Publication year - 2014
Publication title -
obesity
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.438
H-Index - 199
eISSN - 1930-739X
pISSN - 1930-7381
DOI - 10.1002/oby.20696
Subject(s) - nefa , ketogenesis , acetone , lipolysis , medicine , type 2 diabetes , chemistry , endocrinology , ketone bodies , diabetes mellitus , insulin , adipose tissue , biochemistry , metabolism
Objective To assess whether breath acetone concentration can be used to monitor the effects of a prolonged physical activity on whole body lipolysis and hepatic ketogenesis in field conditions. Methods Twenty‐three non‐diabetic, 11 type 1 diabetic, and 17 type 2 diabetic subjects provided breath and blood samples for this study. Samples were collected during the International Four Days Marches, in the Netherlands. For each participant, breath acetone concentration was measured using proton transfer reaction ion trap mass spectrometry, before and after a 30‐50 km walk on four consecutive days. Blood non‐esterified free fatty acid (NEFA), beta‐hydroxybutyrate (BOHB), and glucose concentrations were measured after walking. Results Breath acetone concentration was significantly higher after than before walking, and was positively correlated with blood NEFA and BOHB concentrations. The effect of walking on breath acetone concentration was repeatedly observed on all four consecutive days. Breath acetone concentrations were higher in type 1 diabetic subjects and lower in type 2 diabetic subjects than in control subjects. Conclusions Breath acetone can be used to monitor hepatic ketogenesis during walking under field conditions. It may, therefore, provide real‐time information on fat burning, which may be of use for monitoring the lifestyle interventions.