Effect of 14 weeks of resistance training on lipid profile and body fat percentage in premenopausal women.

Old Dominion University, Darden College of Education, Department of Exercise Science, Physical Education and Recreation, Norfolk, VA 23529-0196, USA.
British Journal of Sports Medicine (Impact Factor: 4.17). 07/1999; 33(3):190-5. DOI: 10.1136/bjsm.33.3.190
Source: PubMed

ABSTRACT To study the effects of a supervised, intensive (85% of one repetition maximum (1-RM)) 14 week resistance training programme on lipid profile and body fat percentage in healthy, sedentary, premenopausal women.
Twenty four women (mean (SD) age 27 (7) years) took part in the study. Subjects were randomly assigned to either a non-exercising control group or a resistance exercise training group. The resistance exercise training group took part in supervised 45-50 minute resistance training sessions (85% of 1-RM), three days a week on non-consecutive days for 14 weeks. The control group did not take part in any structured physical activity.
Two way analysis of variance with repeated measures showed significant (p < 0.05) increases in strength (1-RM) in the exercising group. There were significant (p < 0.05) decreases in total cholesterol (mean (SE) 4.68 (0.31) v 4.26 (0.23) mmol/1 (180 (12) v 164 (9) mg/dl)), low density lipoprotein (LDL) cholesterol (2.99 (0.29) v 2.57 (0.21) mmol/l (115 (11) v 99 (8) mg/dl), the total to high density lipoprotein (HDL) cholesterol ratio (4.2 (0.42) v 3.6 (0.42)), and body fat percentage (27.9 (2.09) v 26.5 (2.15)), as well as a strong trend towards a significant decrease in the LDL to HDL cholesterol ratio (p = 0.057) in the resistance exercise training group compared with their baseline values. No differences were seen in triglycerides and HDL cholesterol. No changes were found in any of the measured variables in the control group.
These findings suggest that resistance training has a favourable effect on lipid profile and body fat percentage in healthy, sedentary, premenopausal women.


Available from: John David Branch, Mar 07, 2014
  • Source
    [Show abstract] [Hide abstract]
    ABSTRACT: In this study, 90 middle-aged men were randomly assigned to exercise (E, n= 44) and control groups (C, n= 46) to examine the role of physical exercise on serum lipoproteins. While the exercise group participated in a 2-month training program, the control group maintained their previous exercise habits. Serum triglycerides decreased from 1.54 ± 0.10 to 1.27 ± 0.08 mmol/1 (p<0.001) and high-density lipoprotein cholesterol increased from 1.27 ± 0.04 to 1.41 ± 0.04 mmol/1 (p<0.01) in the exercise group after intervention. As the concentration of apolipoprotein AI stayed constant in both groups, the ratio of HDL cholesterol/apolipoprotein AII increased only in the exercise group. While the change in serum triglycerides in the exercise group was not dependent on weight reduction, high-density lipoprotein cholesterol changed based on weight reduction.
  • Source
    [Show abstract] [Hide abstract]
    ABSTRACT: This investigation examined college-age women s perceived benefits and barriers to strength training. Women were classified as strength trainers (ST. N = 50) or non-strength trainers (NST, N = 50) on the basis of an exercise participation questionnaire. Benefits and barriers were measured using the Benefits and Barriers to Exercise (BBE) Questionnaire, which was modified to deal specifically with strength training issues. It was predicted that ST would report more benefits and less barriers when compared to their NST counterparts, while NST would report more barriers and less benefits than their ST counterparts. There were no differences between ST and NST on perceived benefits of strength training, suggesting that both are aware of the benefits of strength training. Of the perceived benefits, body image and health were both higher than psychological and social, which were not different. NST re-ported significantly higher .scores on all four barrier factors relative to their ST counter-parts. For NST, time-effort was the highest of the barriers, with physical, social, and specific being slightly lower STwere virtually free from any perceived barriers to strength training. Based on these results, it appears that both ST and NST are aware of the benefits of strength training; however, NST have yet to overcome their perceived barriers to strength training. As such, future interventions should concentrate on overcoming barriers to exercise, specifi-cally time management. The American College of Sports Medicine (2000) recently highlighted the importance of strength training, along with aerobic and flexibility exercises, as key elements to a "well-rounded training program" for healthy adults. Interestingly, gender differences were not high-lighted as a possible moderating factor for deriving benefits from strength training, suggesting that both men and women should participate in strength training. Additionally, various inves-tigations have shown that women can benefit both physiologically and psychologically from a strength training program (Ebben & Jensen, 1998; Fleck, 1998; Freedson, 2000; Marble, 1997). However, despite the benefits associated with strength training, the number of women who participate in strength training programs is low (Ebben & Jensen, 1998). Strength training has several physiological benefits for women, including increasing muscular strength (Brown & Harrison, Wilmore, 1974) in both young and middle-aged women. In older women, strength training helps prevent sarcopenia by increasing the strength, mass, power, and quality of skeletal muscle, and it may also help prevent age-related losses in bone mineral density (Hurley & Roth, 2000). Among women of all ages, strength training also enhances the ability to carry out activities of daily living (American College of Sports Medi-cine, 2000).
  • [Show abstract] [Hide abstract]
    ABSTRACT: The purpose of this study was to investigate the effect of 12-week of aerobic training on homocysteine, lipoprotein A and lipid profile levels in sedentary middle-age men. This was a quasi-experimental study. Subjects of the study were 24 men (age 40-60) who participated is the study voluntarily and were randomly assigned in aerobic (n = 12) and control (n = 12) groups. The subjects participated in progressive aerobic training on treadmill 3 times a week (20 min/session (60% maximum heart rate) to 60 min (75% maximum heart rate). Homocysteine, lipoprotein A, triglyceride (TG), cholesterol, low-density lipoprotein (LDL) and high-density lipoprotein (HDL) were measured before and after 12-week. Data were analyzed using paired t-test and independent t-test statistical methods. Research findings showed a significant decrease in homocysteine (P = 0.002), lipoprotein A (P = 0.003), TG (P = 0.008), cholesterol (P = 0.024) and LDL (P = 0.019), significant increase in HDL (P = 0.017) in posttest compared to pretest. Furthermore, research findings showed that homocysteine (P = 0.005), lipoprotein A (P = 0.001), TG (P = 0.006), cholesterol (P = 0.015), LDL (P = 0.022), and HDL (P = 0.004) levels between the two groups. These findings reveal the 3 sessions/week of aerobic training cause reduction of homocysteine, lipoprotein A, and lipid profile levels in sedentary middle-aged men and can be recommended for prevention of cardiovascular disease.
    International journal of preventive medicine 08/2014; 5(8):1060-1066.