Nutrimuscle Forum : Mobile & Tablette

Plus de force et moins de gras avec les oméga 3

Actualités sport, fitness & musculation, vidéos des pros, études scientifiques. Discutez avec la communauté Nutrimuscle et partagez votre expérience...

Modérateurs: Nutrimuscle-Conseils, Nutrimuscle-Diététique

Plus de force et moins de gras avec les oméga 3

Messagepar Nutrimuscle-Conseils » 2 Aoû 2011 18:57

Dietary Omega-3/Omega-6 Fat and Muscle Responses to Resistance Training In Older Adults
Medicine & Science in Sports & Exercise: May 2011 - Volume 43 - Issue 5 - p 305
Riechman, Steven E. FACSM; Lee, Chang Woock; Chikani, Gentle; Lee, Teak V.; Chen, Vincent

Evidence exists that variation in dietary lipid intake can influence variation in muscle responses to resistance training. In particular, Omega 3 fatty acids have shown promise is balancing pro- and anti-inflammatory responses, accelerate healing and therefore may be beneficial to intensive training.
PURPOSE: To determine the association of dietary omega-3/omega-6 intake and muscle strength and mass responses to 12 weeks of progressive resistance training.
METHODS: 22 women and 15 men, age 60±6 documented all food intake 4X/wk for the 12 weeks which was entered to and analyzed by Nutribase 8.0 software. Training included 3X/wk, 3 sets, 8-12 repetitions, 8 exercises on Keiser 300series and body composition by DEXA. All subjects consumed a post-exercise protein supplement (0.4 g/kg).
RESULTS: Regression analyses of total omega-3, omega-6, as well as specific subfractions indicated significant positive associations of α-linolenic acid and change in body fat and change in leg press peak power and conjugated linolenic acid and percent change in leg press one repetition maximum (P<0.01) controlling for kcal, gender and protein intake. Change in lean mass was not associated with variation in Omega-3 or-6 intake variation.
CONCLUSION: Intake of Omega-3 and -6 fatty acids in the range common to western diets does not have a comprehensive effect on muscle responses to resistance training.
Avatar de l’utilisateur
Nutrimuscle-Conseils
Forum Admin
 
Messages: 38839
Inscription: 11 Sep 2008 19:11

Messagepar Nutrimuscle-Conseils » 2 Aoû 2011 20:27

Même résultats chez des fighters : plus de force moins de graisses

The Effect Omega-3 Enriched Food In The Athletic Performance And Body Composition Of Taekwondo Athletes
Medicine & Science in Sports & Exercise: May 2011 - Volume 43 - Issue 5 - pp 473-474 Rocha, Fernando1; Costa, Aldo2; Bernardo, Alexandra1; Pereira, Paula

In competitive sports based on body weight, such as Taekwondo, weight control is a main concern. Achieving the same levels of athletic performance by maintaining body weight with decrease in fat mass, without major change in energy intake, will be a real accomplishment. It has been suggested that some essential fatty acids, such as omega-3, can interfere in some metabolic processes involving body fat storages, fat metabolism and glycogenic synthesis.
PURPOSE: To investigate the consumption effect of a spread cream (20g/day-1,6g/day omega-3) and a type of bread (57g/day -0,014g DHA and 0,022g EPA) both enriched with omega-3 in the athletic performance and body composition of Taekwondo athletes.
METHODS: Twelve senior Taekwondo athletes (19,1 ± 3,4 yr) with at least 5 years of experience were studied for 12 weeks (washout and intervention, each with 6 weeks). The washout period served to control any trace of omega 3 in the body. The intervention was the ingestion of 20g/day of spread cream and 57g/day of bread with omega-3. Three evaluations procedures were taken: baseline (T0), washout (6 weeks after, T1) and intervention (12 weeks after baseline,T2). Body composition (DEXA, dual-energy X-ray absorptiometry), anaerobic performance (WINGATE TEST and TOTAL LEG STRIKES), analysis of food intake (7day diet recall) and physical activity level (7 day physical activity recall, short version) were measured. Athletes were told to maintain their normal physical activity and food intake during the study, and to avoid some omega -3 rich foods.
RESULTS: After 12 weeks, the results show a significant increase in all physical performance parameters: peak power (p=0,003; 600,9 ± 216,3 vs 735,2 ± 262,6- in watts t1 vs t2), relative peak power (p=0,002; 9,2 ± 2,4 vs 11,5 ± 2,7- watts/kg for t1 vs t2), anaerobic capacity (p<0,001; 2457,4 ± 863,4 vs 3198,9 ± 1155,4 - total watts/30s t1 vs t2), anaerobic fatigue (p=0,004; 39,4 ± 5,5 vs 47,4 ± 8,9- % for t1 vs t2) and total leg strikes (p=0,001; 122,7 ± 10,1 vs 144,0 ± 25,1- t0 vs t2). Fat mass was reduced (p=0,007; 19,3 ± 7,0 vs 17,9 ± 7,1- % values, for t1 vs t2), while lean mass was unaffected after intervention
CONCLUSIONS: This study suggests that consuming spread cream (1,6g/d ω-3) and a type of bread (0,036g/d ω-3) enriched with omega-3 improves body composition and athletic performance in Taekwondo athletes.
Avatar de l’utilisateur
Nutrimuscle-Conseils
Forum Admin
 
Messages: 38839
Inscription: 11 Sep 2008 19:11


Retourner vers Actualités, vidéos, études scientifiques

Qui est en ligne

Utilisateurs parcourant ce forum: Aucun utilisateur enregistré et 1 invité