ESNL researchers present papers at the 23rd International Sport Science Congress at Keimyung University in Daegu, Korea

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Korean Society of Exercise Nutrition – KAHPERD

KAHPERD Presentation 8-26-11bDr. Kreider and Peter Jung (doctoral student) traveled to Keimyung University in South Korea to attend the Korean Society for Exercise Nutrition session at the 23rd International Sport Science Congress on August 26, 2011.  This conference preceeded the 2011 IAAF Track & Field World Championships that were held in Daegu, South Korea.  Dr. Kreider presented a paper overviewing the ESNL and ISSN nutritional strategies to enhance performance and Peter Jung presented research from the Curves Women’s Health & Fitness Initiative (see below).  The conference commemorated the 1988 Seoul Olympic Games and was held in collaboration with the Korean Alliance of Health, Physical Education, Recreation, and Dance (KAHPERD).   


Effects of a High Protein Energy-restricted Diet on Body Composition and Markers of Health in Obese Women

Yanghoon Peter Jung, Jonathan M. Oliver, Chris Rasmussen, Richard B. Kreider. Exercise & Sport Nutrition Lab, Texas A&M University, College Station, TX 77843

The purpose of this study was to determine whether macronutrient composition of isocaloric diets promotes differential effects although it was suggested that for weight loss, in addition to caloric restriction, fat intake should be reduced and carbohydrate intake increased.

432 sedentary women (48.13±11.28 yrs; 162.78±6.98 cm; 92.02±17.77 kg; 45.08±4.54 % body fat) participated in an exercise program while maintaining a higher carbohydrate (HC, n=239) or higher protein (HP, n=193) diet for 10-weeks. Diets consisted of 1,310±344 kcal/d for 1 week and 1,474±438 kcal/d for 9 weeks and averaged 49±12%/49±11% CHO and 21±11/20±8% PRO in the HP group and 29±13%/36±12% CHO and 33±11/28±9% PRO in the HP group during phase 1 and 2 of the diets. Both groups participated in a supervised circuit-style resistance training program interspersed with calisthenics exercise for 30-min/d, 3 times/wk for 10 weeks.  Body weight (BW), DEXA body composition, resting energy expenditure (REE), fasting blood samples, waist/hip circumference, blood pressure (BP), resting heart rate (RHR), and 1 repetition maximum (1RM) bench press and leg press strength were obtained at 0 week and 10 weeks. Data were analyzed by MANOVA with repeated measures and are presented as mean ± SD changes from baseline.

After 10 weeks, subjects in the HP group experienced a significantly greater (p<0.05) loss in body weight (HP -3.9.0±3.6; HC -3.0±3.2 kg, p=0.004), scanned fat mass (HP -3.0±3.4; HC -2.2±2.5 kg, p=0.005), and had a greater reduction in triglyceride (HP –5.5±34; HC 1.4±36%, p=0.045).  Although significant time effect were observed in most variables, no significant differences were seen between HP and HC groups in fat free mass(HP -0.6±2.0; HC -0.5±1.7 kg, p=0.55), body fat (HP -1.5±3; HC -1.1±2%, p=0.12), REE (HP -0.5±2.5; HC -0.3±2.0 kcal/kg/d, p=0.36), total cholesterol (HP -3.1±15; HC -1.7±18%, p=0.38), HDL (HP -3.2±17; HC -1.8±20%, p=0.72), LDL (HP -3.4±20; HC -2.7±20%, p=0.49), glucose (HP -2.0±16; HC 0.1±15%, p=0.17), uric acid (HP 3.7±22; HC 1.5±16%, p=0.26), ratio of waist/hip circumference (HP -0.6±6.5; HC 0.1±10.4%, p=0.35), SBP (HP -3.8±15.6; HC -3.1±14.3%, p=0.63), DBP (HP -1.9±9.9; HC -2.7±9.2%, p=0.39), RHR (HP -2.8±10.6, HC -3.1±10.5 bpm, p=0.79), bench press 1RM (HP 7.2±14.7; HC 8.5±16.9%, p=0.45) or leg press (HP 11.4±18.1; HC 11.1±21.7%, p=0.90).

A HP diet promotes more favorable changes in BW, FM and TG percentage while participating in the Curves circuit training program.

Supported by Curves International, Waco TX