1. Leptin levels and luteinizing hormone pulsatility in normal cycling women and their relationship to daily changes in metabolic rate 
Rebecca M. Fenichel, M.D., Jennifer E. Dominguez, B.A., Laurel Mayer, M.D., B. Timothy Walsh, M.D., Carol Boozer, M.D., Michelle P. Warren, M.D. 
Fertility and Sterility 
Volume 90, Issue 4, Pages (October 2008)
DOI: /j.fertnstert
Copyright © 2008 American Society for Reproductive Medicine Terms and Conditions

2. Figure 1
Frequently sampled LH, leptin, and metabolic rate (MR) levels for three representative subjects. Arrows represent meal times. Horizontal bars represent sleep time.
Fertility and Sterility  , DOI: ( /j.fertnstert )
Copyright © 2008 American Society for Reproductive Medicine Terms and Conditions

3. Figure 2 Mean metabolic rate and leptin levels over 24 hours.
Fertility and Sterility  , DOI: ( /j.fertnstert )
Copyright © 2008 American Society for Reproductive Medicine Terms and Conditions