Effects of participation in popular weight loss and fitness programs on insulin and leptin in women Conference Paper uri icon

abstract

  • 100 sedentary women (4611 yr, 45.85% body fat, 35.25 kg/m2) were randomized to participate in a no diet or exercise control group (C) or the Curves Complete 90day Challenge (CC), Weight Watchers Points Plus (WW), Jenny Craig (JC), or Nutrisystem Advance Select (NS) weight loss programs for 12wks. Participants in the diet groups were encouraged to exercise (WW, JC, NS) while those in the CC group participated in a structured circuitstyle resistance training (3 d/wk) and walking (3 d/wk) program. Fasting blood samples were obtained at 0, 4, 8, & 12 wks. Changes from baseline to 12wks intervention for fasting insulin, the glucose to insulin ratio, homeostatic model assessment (HOMA), and leptin were analyzed by oneway ANOVA. Participants in the CC group tended to experience greater changes in fasting insulin (C 0.86.9; CC 7.514; WW 2.98.1; JC 3.86.3; NS 1.28.3 uIU/ml, p=0.10), the glucose to insulin ratio (C 1.34.1; CC 7.014; WW 3.35.4; JC 4.87.4; NS 6.021, p=0.01), HOMA (C 0.11.6; CC 2.34.4; WW 0.81.7; JC 1.01.9; NS 0.42.2, p=0.07) and leptin (C 4.316; CC 17.921; WW 13.016; JC 12.225; NS 3.526 ng/ml, p=0.03) compared to some of the other diet and exercise interventions. Results indicate that participation in different diet and exercise programs may have variable effects on markers of insulin resistance and leptin.

published proceedings

  • FASEB JOURNAL

author list (cited authors)

  • Dalton, R., Lockard, B., Baetge, C., Levers, K., Galvan, E., Jagim, A., ... Kreider, R.

citation count

  • 1

complete list of authors

  • Dalton, R||Lockard, B||Baetge, C||Levers, K||Galvan, E||Jagim, A||Simbo, S||Byrd, M||Jung, YP||Oliver, JM||Koozehchian, M||Khanna, D||Sanchez, B||Kresta, JY||Horrell, K||Leopold, T||Cho, M||Springer, S||Rivera, A||Cerda, C||Rasmussen, C||Kreider, R

publication date

  • April 2013

publisher