CClinicalTrials.gg
CompletedNCT02529046CLAUpdated Aug 19, 2015

Conjugated Linoleic Acid in Obese Women

An interventional study of CLA and Placebo in Lipid Metabolism Disorders and Obesity, sponsored by Universidade Estadual de Londrina. Completed at 1 site in Brazil. Open to female participants aged 18 Years to 35 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2015-08-19.

Sponsored by Universidade Estadual de Londrina · Not applicable, Interventional, and Treatment

Phase
Not applicable
Study type
Interventional
Enrollment
28
Allocation
Randomized
Ages
18 Years to 35 Years
Sex
Female
01

Study summary

In this trial, the investigators analyzed the effects of eight weeks of CLA supplementation associated with aerobic exercise on body fat and lipid profile in obese women.

Read the detailed description

The aim of this investigation was to analyze the effects of eight weeks of CLA supplementation associated with aerobic exercise on body fat and lipid profile in obese women. The investigators performed a randomized, double-blinded and placebo-controlled trial with 28 obese women who received 3.2 g/d of CLA or 4 g/d of olive oil (placebo group) while performing an 8-week protocol of aerobic exercise. Dietary intake (food record), body fat (DXA) and biochemical analysis (blood sample) were assessed before and after the intervention period.

02

Conditions studied

  • Lipid Metabolism Disorders
  • Obesity
03

In context

Metabolic Diseases

997 studies on the registry are indexed under Metabolic Diseases; 234 are open to participants now.

This study's enrollment of 28 is below the median of 48 across 670 interventional studies indexed under Metabolic Diseases.

Browse Metabolic Diseases studies →

Lead sponsor

Universidade Estadual de Londrina is the lead sponsor of 49 studies on the registry; 4 are open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years to 35 Years
Sexes eligible
Female
Accepts healthy volunteers
Yes

Inclusion criteria

  • Had no signs or symptoms of disease
  • No orthopedic injuries
  • Must be inactive or moderately active (defined as performing any type of physical exercise less than twice a week)
  • Must be non-smokers
  • Must be free from the use of ergogenic aids
  • Had no metabolic disorders or chronic degenerative diseases
  • Not use drug therapy for body mass loss.

Exclusion criteria

Exclusion Criteria:

  • Had frequency to training sessions below 85% of the total sessions
05

Study design

Phase
Not applicable
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Double (Participant, Investigator)
Enrollment
28 participants (actual)

Study arms

  • Active comparator
    Aerobic exercise associated with CLA

    CLA group received supplementation at a dose of 3.2 g/day (mixture of isomers of CLA isomers predominantly c9, t11 - 50% and c12, t10 - 80%).

    Dietary Supplement: CLA

  • Placebo comparator
    Aerobic exercise

    Placebo group received 4 g/day of olive oil.

    Behavioral: Placebo

Interventions

  • Dietary supplementCLA

    CLA group received supplementation at a dose of 3.2 g/day (mixture of isomers of CLA isomers predominantly c9, t11 - 50% and c12, t10 - 80%). Aerobic exercise associated with CLA

  • BehavioralPlacebo

    Placebo group received 4 g/day of olive oil. Aerobic exercise

06

What researchers measure

Primary outcomes

  1. Body fat

    Dual-energy X-ray absorptiometry

    Time frame: 8 weeks

Secondary outcomes

  1. Total cholesterol

    Blood analysis

    Time frame: 8 weeks

  2. Triglycerides

    Blood analysis

    Time frame: 8 weeks

  3. High-density lipoprotein

    Blood analysis

    Time frame: 8 weeks

  4. Low-density lipoprotein

    Estimated by Friedewald formula

    Time frame: 8 weeks

  5. Trunk fat

    Dual-energy X-ray absorptiometry

    Time frame: 8 weeks

  6. Arm fat

    Dual-energy X-ray absorptiometry

    Time frame: 8 weeks

  7. Leg fat

    Dual-energy X-ray absorptiometry

    Time frame: 8 weeks

Other outcomes

  1. Body mass

    Urano, model PS 180

    Time frame: 8 weeks

  2. Maximum oxygen uptake

    incremental treadmill test

    Time frame: 8 weeks

07

Study locations

1 site
  • Universidade Estadual de Londrina
    Londrina, Paraná 86.057-970, Brazil
08

References and documents

Publications

  • Adams RE, Hsueh A, Alford B, King C, Mo H, Wildman R. Conjugated linoleic Acid supplementation does not reduce visceral adipose tissue in middle-aged men engaged in a resistance-training program. J Int Soc Sports Nutr. 2006 Dec 13;3(2):28-36. doi: 10.1186/1550-2783-3-2-28. PubMed 18500970 ↗
  • Alkerwi A, Vernier C, Crichton GE, Sauvageot N, Shivappa N, Hebert JR. Cross-comparison of diet quality indices for predicting chronic disease risk: findings from the Observation of Cardiovascular Risk Factors in Luxembourg (ORISCAV-LUX) study. Br J Nutr. 2015 Jan 28;113(2):259-69. doi: 10.1017/S0007114514003456. Epub 2014 Dec 5. PubMed 25475010 ↗
  • Banu J, Bhattacharya A, Rahman M, O'Shea M, Fernandes G. Effects of conjugated linoleic acid and exercise on bone mass in young male Balb/C mice. Lipids Health Dis. 2006 Mar 23;5:7. doi: 10.1186/1476-511X-5-7. PubMed 16556311 ↗
  • Bhattacharya A, Banu J, Rahman M, Causey J, Fernandes G. Biological effects of conjugated linoleic acids in health and disease. J Nutr Biochem. 2006 Dec;17(12):789-810. doi: 10.1016/j.jnutbio.2006.02.009. Epub 2006 May 2. PubMed 16650752 ↗
  • Blankson H, Stakkestad JA, Fagertun H, Thom E, Wadstein J, Gudmundsen O. Conjugated linoleic acid reduces body fat mass in overweight and obese humans. J Nutr. 2000 Dec;130(12):2943-8. doi: 10.1093/jn/130.12.2943. PubMed 11110851 ↗
  • Carvalho RF, Uehara SK, Rosa G. Microencapsulated conjugated linoleic acid associated with hypocaloric diet reduces body fat in sedentary women with metabolic syndrome. Vasc Health Risk Manag. 2012;8:661-7. doi: 10.2147/VHRM.S37385. Epub 2012 Dec 13. PubMed 23271912 ↗
  • Colakoglu S, Colakoglu M, Taneli F, Cetinoz F, Turkmen M. Cumulative effects of conjugated linoleic acid and exercise on endurance development, body composition, serum leptin and insulin levels. J Sports Med Phys Fitness. 2006 Dec;46(4):570-7. PubMed 17119522 ↗
  • de Deckere EA, van Amelsvoort JM, McNeill GP, Jones P. Effects of conjugated linoleic acid (CLA) isomers on lipid levels and peroxisome proliferation in the hamster. Br J Nutr. 1999 Oct;82(4):309-17. PubMed 10655980 ↗
  • Di Felice V, Macaluso F, Montalbano A, Gammazza AM, Palumbo D, Angelone T, Bellafiore M, Farina F. Effects of conjugated linoleic acid and endurance training on peripheral blood and bone marrow of trained mice. J Strength Cond Res. 2007 Feb;21(1):193-8. doi: 10.1519/00124278-200702000-00035. PubMed 17313269 ↗
  • Diaz ML, Watkins BA, Li Y, Anderson RA, Campbell WW. Chromium picolinate and conjugated linoleic acid do not synergistically influence diet- and exercise-induced changes in body composition and health indexes in overweight women. J Nutr Biochem. 2008 Jan;19(1):61-8. doi: 10.1016/j.jnutbio.2007.01.006. Epub 2007 May 24. PubMed 17531459 ↗
  • Dilzer A, Park Y. Implication of conjugated linoleic acid (CLA) in human health. Crit Rev Food Sci Nutr. 2012;52(6):488-513. doi: 10.1080/10408398.2010.501409. PubMed 22452730 ↗
  • Eftekhari MH, Aliasghari F, Beigi MA, Hasanzadeh J. The effect of conjugated linoleic acids and omega-3 fatty acids supplementation on lipid profile in atherosclerosis. Adv Biomed Res. 2014 Jan 9;3:15. doi: 10.4103/2277-9175.124644. eCollection 2014. PubMed 24600599 ↗
  • Friedewald WT, Levy RI, Fredrickson DS. Estimation of the concentration of low-density lipoprotein cholesterol in plasma, without use of the preparative ultracentrifuge. Clin Chem. 1972 Jun;18(6):499-502. No abstract available. PubMed 4337382 ↗
  • Garber CE, Blissmer B, Deschenes MR, Franklin BA, Lamonte MJ, Lee IM, Nieman DC, Swain DP; American College of Sports Medicine. American College of Sports Medicine position stand. Quantity and quality of exercise for developing and maintaining cardiorespiratory, musculoskeletal, and neuromotor fitness in apparently healthy adults: guidance for prescribing exercise. Med Sci Sports Exerc. 2011 Jul;43(7):1334-59. doi: 10.1249/MSS.0b013e318213fefb. PubMed 21694556 ↗
  • Gaullier JM, Halse J, Hoivik HO, Hoye K, Syvertsen C, Nurminiemi M, Hassfeld C, Einerhand A, O'Shea M, Gudmundsen O. Six months supplementation with conjugated linoleic acid induces regional-specific fat mass decreases in overweight and obese. Br J Nutr. 2007 Mar;97(3):550-60. doi: 10.1017/S0007114507381324. PubMed 17313718 ↗
  • Hill AM, LaForgia J, Coates AM, Buckley JD, Howe PR. Estimating abdominal adipose tissue with DXA and anthropometry. Obesity (Silver Spring). 2007 Feb;15(2):504-10. doi: 10.1038/oby.2007.629. PubMed 17299124 ↗
  • Jenkins ND, Buckner SL, Cochrane KC, Bergstrom HC, Goldsmith JA, Weir JP, Housh TJ, Cramer JT. CLA supplementation and aerobic exercise lower blood triacylglycerol, but have no effect on peak oxygen uptake or cardiorespiratory fatigue thresholds. Lipids. 2014 Sep;49(9):871-80. doi: 10.1007/s11745-014-3929-0. Epub 2014 Jul 18. PubMed 25034667 ↗
  • Kennedy A, Martinez K, Schmidt S, Mandrup S, LaPoint K, McIntosh M. Antiobesity mechanisms of action of conjugated linoleic acid. J Nutr Biochem. 2010 Mar;21(3):171-9. doi: 10.1016/j.jnutbio.2009.08.003. Epub 2009 Dec 1. PubMed 19954947 ↗
  • Lambert EV, Goedecke JH, Bluett K, Heggie K, Claassen A, Rae DE, West S, Dugas J, Dugas L, Meltzeri S, Charlton K, Mohede I. Conjugated linoleic acid versus high-oleic acid sunflower oil: effects on energy metabolism, glucose tolerance, blood lipids, appetite and body composition in regularly exercising individuals. Br J Nutr. 2007 May;97(5):1001-11. doi: 10.1017/S0007114507172822. PubMed 17381964 ↗
  • Larsen TM, Toubro S, Astrup A. Efficacy and safety of dietary supplements containing CLA for the treatment of obesity: evidence from animal and human studies. J Lipid Res. 2003 Dec;44(12):2234-41. doi: 10.1194/jlr.R300011-JLR200. Epub 2003 Aug 16. PubMed 12923219 ↗
  • Mertz W, Tsui JC, Judd JT, Reiser S, Hallfrisch J, Morris ER, Steele PD, Lashley E. What are people really eating? The relation between energy intake derived from estimated diet records and intake determined to maintain body weight. Am J Clin Nutr. 1991 Aug;54(2):291-5. doi: 10.1093/ajcn/54.2.291. PubMed 1858692 ↗
  • Mitchell PL, Karakach TK, Currie DL, McLeod RS. t-10, c-12 CLA dietary supplementation inhibits atherosclerotic lesion development despite adverse cardiovascular and hepatic metabolic marker profiles. PLoS One. 2012;7(12):e52634. doi: 10.1371/journal.pone.0052634. Epub 2012 Dec 20. PubMed 23285120 ↗
  • Moon HS. Biological effects of conjugated linoleic acid on obesity-related cancers. Chem Biol Interact. 2014 Dec 5;224:189-95. doi: 10.1016/j.cbi.2014.11.006. Epub 2014 Nov 18. PubMed 25446861 ↗
  • Mougios V, Matsakas A, Petridou A, Ring S, Sagredos A, Melissopoulou A, Tsigilis N, Nikolaidis M. Effect of supplementation with conjugated linoleic acid on human serum lipids and body fat. J Nutr Biochem. 2001 Oct;12(10):585-594. doi: 10.1016/s0955-2863(01)00177-2. PubMed 12031264 ↗
  • Onakpoya IJ, Posadzki PP, Watson LK, Davies LA, Ernst E. The efficacy of long-term conjugated linoleic acid (CLA) supplementation on body composition in overweight and obese individuals: a systematic review and meta-analysis of randomized clinical trials. Eur J Nutr. 2012 Mar;51(2):127-34. doi: 10.1007/s00394-011-0253-9. Epub 2011 Oct 12. PubMed 21990002 ↗
  • Pariza MW, Park Y, Cook ME. Mechanisms of action of conjugated linoleic acid: evidence and speculation. Proc Soc Exp Biol Med. 2000 Jan;223(1):8-13. doi: 10.1046/j.1525-1373.2000.22302.x. PubMed 10632956 ↗
  • Pariza MW, Park Y, Cook ME. The biologically active isomers of conjugated linoleic acid. Prog Lipid Res. 2001 Jul;40(4):283-98. doi: 10.1016/s0163-7827(01)00008-x. PubMed 11412893 ↗
  • Pinkoski C, Chilibeck PD, Candow DG, Esliger D, Ewaschuk JB, Facci M, Farthing JP, Zello GA. The effects of conjugated linoleic acid supplementation during resistance training. Med Sci Sports Exerc. 2006 Feb;38(2):339-48. doi: 10.1249/01.mss.0000183860.42853.15. PubMed 16531905 ↗
  • Poirier P, Despres JP. Exercise in weight management of obesity. Cardiol Clin. 2001 Aug;19(3):459-70. doi: 10.1016/s0733-8651(05)70229-0. PubMed 11570117 ↗
  • Qi R, Yang F, Huang J, Peng H, Liu Y, Liu Z. Supplementation with conjugated linoeic acid decreases pig back fat deposition by inducing adipocyte apoptosis. BMC Vet Res. 2014 Jun 26;10:141. doi: 10.1186/1746-6148-10-141. PubMed 24969229 ↗
  • Riserus U, Arner P, Brismar K, Vessby B. Treatment with dietary trans10cis12 conjugated linoleic acid causes isomer-specific insulin resistance in obese men with the metabolic syndrome. Diabetes Care. 2002 Sep;25(9):1516-21. doi: 10.2337/diacare.25.9.1516. PubMed 12196420 ↗
  • Riserus U, Berglund L, Vessby B. Conjugated linoleic acid (CLA) reduced abdominal adipose tissue in obese middle-aged men with signs of the metabolic syndrome: a randomised controlled trial. Int J Obes Relat Metab Disord. 2001 Aug;25(8):1129-35. doi: 10.1038/sj.ijo.0801659. PubMed 11477497 ↗
  • Ritzenthaler KL, Shahin AM, Shultz TD, Dasgupta N, McGuire MA, McGuire MK. Dietary intake of c9,t11-conjugated linoleic acid correlates with its concentration in plasma lipid fractions of men but not women. J Nutr. 2012 Sep;142(9):1645-51. doi: 10.3945/jn.111.156794. Epub 2012 Jul 25. PubMed 22833652 ↗
  • Salas-Salvado J, Marquez-Sandoval F, Bullo M. Conjugated linoleic acid intake in humans: a systematic review focusing on its effect on body composition, glucose, and lipid metabolism. Crit Rev Food Sci Nutr. 2006;46(6):479-88. doi: 10.1080/10408390600723953. PubMed 16864141 ↗
  • Sluijs I, Plantinga Y, de Roos B, Mennen LI, Bots ML. Dietary supplementation with cis-9,trans-11 conjugated linoleic acid and aortic stiffness in overweight and obese adults. Am J Clin Nutr. 2010 Jan;91(1):175-83. doi: 10.3945/ajcn.2009.28192. Epub 2009 Nov 18. PubMed 19923377 ↗
  • Steck SE, Chalecki AM, Miller P, Conway J, Austin GL, Hardin JW, Albright CD, Thuillier P. Conjugated linoleic acid supplementation for twelve weeks increases lean body mass in obese humans. J Nutr. 2007 May;137(5):1188-93. doi: 10.1093/jn/137.5.1188. PubMed 17449580 ↗
  • Tarnopolsky M, Zimmer A, Paikin J, Safdar A, Aboud A, Pearce E, Roy B, Doherty T. Creatine monohydrate and conjugated linoleic acid improve strength and body composition following resistance exercise in older adults. PLoS One. 2007 Oct 3;2(10):e991. doi: 10.1371/journal.pone.0000991. PubMed 17912368 ↗
  • Thom E, Wadstein J, Gudmundsen O. Conjugated linoleic acid reduces body fat in healthy exercising humans. J Int Med Res. 2001 Sep-Oct;29(5):392-6. doi: 10.1177/147323000102900503. Erratum In: J Int Med Res 2002 Mar-Apr;30(2):210. Dosage error in published abstract; MEDLINE/PubMed abstract corrected. PubMed 11725826 ↗
  • Tsuboyama-Kasaoka N, Takahashi M, Tanemura K, Kim HJ, Tange T, Okuyama H, Kasai M, Ikemoto S, Ezaki O. Conjugated linoleic acid supplementation reduces adipose tissue by apoptosis and develops lipodystrophy in mice. Diabetes. 2000 Sep;49(9):1534-42. doi: 10.2337/diabetes.49.9.1534. PubMed 10969838 ↗
  • Wanders AJ, Brouwer IA, Siebelink E, Katan MB. Effect of a high intake of conjugated linoleic acid on lipoprotein levels in healthy human subjects. PLoS One. 2010 Feb 3;5(2):e9000. doi: 10.1371/journal.pone.0009000. PubMed 20140250 ↗
  • Zambell KL, Horn WF, Keim NL. Conjugated linoleic acid supplementation in humans: effects on fatty acid and glycerol kinetics. Lipids. 2001 Aug;36(8):767-72. doi: 10.1007/s11745-001-0783-8. PubMed 11592726 ↗
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Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Aug 19, 2015, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
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Registry details

Key details

Study ID
NCT02529046
Lead sponsor
Universidade Estadual de Londrina
Responsible party
Edilson Serpeloni Cyrino (Professor, Universidade Estadual de Londrina) — Principal investigator
First posted
Aug 19, 2015
Start date
Mar 2007
Primary completion
Jun 2007
Completion
Jul 2007
Last update
Aug 19, 2015

Study contacts

Edilson Cyrino, PhD
study chair · Universidade Estadual de Londrina

Oversight

Data monitoring committee
No
View the source record on ClinicalTrials.gov ↗

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