Conjugated Linoleic Acid Supplementation has no Impact on Aerobic Capacity of Healthy Young Men

Abstract

This study investigated the effect of conjugated linoleic acid (CLA) on the aerobic capacity and anthropometric measurements of humans. Although this effect has been shown in animal studies, human studies have reported controversial results. In this double-blind, placebo-controlled, randomized clinical trial, 80 non-trained healthy young men received a 50:50 mixture of cis-9,trans-11 and trans-10 cis-12 CLA (CLA 4 × 0.8 g day−1) ora placebo (PLA; soybean oil) in an 8-week intervention. Maximal oxygen consumption (VO2 max), time to exhaustion, weight, body mass index (BMI) and waist circumference (WC) were measured. CLA had no effect on VO2 max (p = 0.5) also no change was seen in time to exhaustion (p = 0.51), weight (p = 0.7), BMI (p = 0.7) and WC (p = 0.8) vs PLA. Our results suggest that CLA has no significant effect on VO2 max, time to exhaustion and anthropometric measurements in untrained healthy young male students.

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Abbreviations

BMI:

Body mass index

BW:

Body weight

WC:

Waist circumference

CLA:

Conjugated linoleic acid

PLA:

Placebo

PA:

Physical activity

VO2 max:

Maximal oxygen consumption

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Acknowledgments

This study was funded through a research grant from the Research Deputy of Iran University of Medical Sciences (proposal no. 91-01-27-16706). Also the authors wish to thank Dr Saeed Arefanian for editing the first draft of the manuscript. Ms. S. Afshari for providing the required apparatus. Ms. Sonia Tian and Mr. Ahmed Dorbehani for helping to import CLA to Iran, and the Dana Company for providing the free placebo and all students who participated in this study. This study was supported by the Iran University of Medical Science Foundation's.

Conflict of interest

The authors declare that they have no conflicts of interest.

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Correspondence to Naheed Aryaeian.

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Tajmanesh, M., Aryaeian, N., Hosseini, M. et al. Conjugated Linoleic Acid Supplementation has no Impact on Aerobic Capacity of Healthy Young Men. Lipids 50, 805–809 (2015). https://doi.org/10.1007/s11745-015-4031-y

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Keywords

  • Nutrition
  • Exercise performance
  • Physical fitness
  • Conjugated linoleic acid
  • Maximal oxygen consumption
  • Time to exhaustion