1 23 European Journal of Applied Physiology ISSN 1439-6319 Eur J Appl Physiol DOI 10.1007/s00421-014-2819-8 Microbiopsies versus Bergström needle for skeletal muscle sampling: impact on maximal mitochondrial respiration rate M. E. Isner-Horobeti, A. Charton, F. Daussin, B. Geny, S. P. Dufour & R. Richard