handdator

Visa fullständig version : Effekter av betain på kroppssammansättning, prestanda, och homocysteintiolakton


krubkungen
2013-08-24, 22:04
Abstract (provisional)
Background
This study investigated the effects of long term betaine supplementation on body composition, performance, and homocysteine thiolactone (HCTL) in experienced strength trained men.

Methods
Twenty-three subjects were matched for training experience (4.8 +/- 2.3 years) and body fat percentage (BF%: 16.9 +/- 8.0%), randomly assigned to either a placebo (PL; n = 12) or betaine group (BET; n = 11; 2.5 g/day), and completed a 6 week periodized training program consisting of 3 two-week micro-cycles. Bench press and back squat training volumes were recorded and changes in training volume were assessed at each micro-cycle. Fasting urine was collected at baseline (BL), weeks 2, 4 and 6, and assayed for HCTL. Subjects were tested prior to and following 6 weeks of treatment. Arm and thigh cross sectional area (CSA) was estimated via girth and skin fold measurements. Body density was estimated via skin fold calipers and used to estimate BF%, fat mass (FM), and lean body mass (LBM). Performance was assessed via vertical jump (VJ), bench press 1 RM (BP), and back squat 1 RM (BS).

Results
Arm CSA increased significantly (p < .05) in BET but not PL. No differences existed between group and time for changes in thigh CSA. Back squat training volume increased significantly (p < .05) for both groups throughout training. Bench press training volume was significantly (p < .05) improved for BET compared to PL at microcycles one and three. Body composition (BF%, FM, LBM) improved significantly (p < .05) in BET but not PL. No differences were found in performance variables (BP, BS, VJ) between groups, except there was a trend (p = .07) for increased VJ power in BET versus PL. A significant interaction (p < .05) existed for HCTL, with increases from BL to week 2 in PL, but not BET. Additionally, HCTL remained elevated at week 4 in PL, but not BET.

Conclusion
Six-weeks of betaine supplementation improved body composition, arm size, bench press work capacity, attenuated the rise in urinary HCTL, and tended to improve power (p = .07) but not strength.

Fullängdare: http://www.jissn.com/content/pdf/1550-2783-10-39.pdf

tlk
2013-08-24, 22:22
Känns skönt att man nu plötsligt får valuta för allt betaine man pytsat i sig.

krubkungen
2013-08-25, 08:26
Känns skönt att man nu plötsligt får valuta för allt betaine man pytsat i sig.

Har faktiskt inte använt betaine förutom i någon enstaka PWO som har haft det som ingrediens. Efter denna studie så vore det något att överväga att använda. Tror dock ingen svensk shop har betaine att köpa.

Hur doserar du? 2,5-5g om dagen?

tlk
2013-08-25, 09:23
Har faktiskt inte använt betaine förutom i någon enstaka PWO som har haft det som ingrediens. Efter denna studie så vore det något att överväga att använda. Tror dock ingen svensk shop har betaine att köpa.

Hur doserar du? 2,5-5g om dagen?

GV har. 60g a 99kr.

Jo runt där.