Elsevier

Diabetes & Metabolism

Volume 29, Issue 5, November 2003, Pages 509-518
Diabetes & Metabolism

Original article
Low intensity endurance exercise targeted for lipid oxidation improves body composition and insulin sensitivity in patients with the metabolic syndrome

https://doi.org/10.1016/S1262-3636(07)70065-4Get rights and content

Summary

Background

To investigate the effects of individualized training on the metabolic syndrome.

Methods

Twenty-eight patients, suffering from the metabolic syndrome were studied before and after 2 months of training and compared to eleven patients who did not follow any training. All the patients were overweight. Training was individualized at the point where fat oxidation was maximal (LIPOXmax) as determined by calorimetry.

Results

The patients exhibited a significant reduction in body weight (– 2.6 ± 0.7 kg; P = 0.002), fat mass (– 1.55 ± 0.5 kg; P = 0.009), waist (– 3.53 ± 1.3cm; P < 0.05) and hip (– 2.21 ± 0.9cm; P < 0.05) circumferences, and improved the ability to oxidize lipids at exercise (crossover point: + 31.7 ± 5.8 W; P < 0.0001; LIPOXmax: + 23.5 ± 5.6 W; P < 0.0001; lipid oxidation: + 68.5 ± 15.4 mg·min−1; P = 0.0001). No clear improvement in either lipid parameters or fibrinogen were observed.

The surrogates of insulin sensitivity evidenced a decrease in insulin resistance: HOMA%S (software): + 72.93 ± 32.64; p < 0.05; HOMA-IR (simplified formula): – 2.42 ± 1.07; P < 0.05; QUICKI: + 0.02 ± 0.004; P < 0.01; SI = 40/I: + 3.28 ± 1.5; P < 0.05.

Significant correlations were found between changes in body weight and HOMA-IR and between changes in LIPOXmax and QUICKI.

Conclusions

Individualized aerobic training improves lipid oxidation, body composition and insulin resistance.

Résumé

Amélioration de la composition corporelle et de la sensibilité à l'insuline chez des patients atteints du syndrome métabolique après un réentraînement à faible intensité ciblant l'oxydation lipidique

Objectif

Analyser les effets d'un réentraînement individualisé sur les composantes du syndrome métabolique.

Méthodes

28 patients ayant les caractéristiques du syndrome métabolique ont été explorés avant et après 2 mois d'entraînement et comparés à 11 patients non réentraînés. Tous les patients étaient en surpoids. L'intensité de l'entraînement correspondait au niveau d'oxydation maximale des lipides (LIPOXmax) déterminée par calorimétrie.

Résultats

On observe une diminution du poids (– 2.6 ± 0.7 kg; P = 0.002), de la masse grasse (– 1.55 ± 0.5 kg; P = 0.009), du tour de taille (– 3.53 ± 1.3 cm; P < 0.05) et du tour de hanche (– 2.21 ± 0.9 cm; P < 0,05), et une amélioration de la capacité à oxyder les lipides à l'exercice (point de croisement: + 31.7 ± 5.8 W; P < 0.0001; LIPOXmax: + 23.5 ± 5.6 W; P < 0.0001; oxydation lipidique: + 68.5 ± 15.4 mg·min−1; P = 0.0001). Aucune amélioration n'a été observée au niveau des paramètres lipidiques et du fibrinogène.

On observe une diminution de la résistance à l'insuline: HOMA%S (logiciel): + 72.93 ± 32.64; p < 0.05; HOMA-IR (formule simplifiée): – 2.42 ± 1.07; P < 0.05; QUICKI: + 0.02 ± 0.004; P < 0.01; SI = 40/I: + 3.28 ± 1.5; P < 0.05.

Des corrélations significatives apparaissent entre l'évolution du poids et de HOMA-IR et entre l'évolution du LIPOXmax et de QUICKI.

Conclusions

Un entraînement aérobie individualisé améliore conjointement l'oxydation lipidique, la composition corporelle et la sensibilité à l'insuline.

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