Sodium effect training??

[president_fad]

TweetIs there any articles or studies showing that a diet high in sodium will effect your training, test, recovery etc??

[president_fad]

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[Skarhead]

TweetDont know about test, etc... but one would get dehydrated and being dehydrated will effect training + growth.

[geesler]

Tweethe Journal of Strength and Conditioning Research: Vol. 19, No. 1, pp. 213–224.

Sodium Bicarbonate and Sodium Citrate: Ergogenic Aids?
Bernardo Requena, Mikel Zabala, Paulino Padial, and Belén Feriche

Department of Physical Education and Sport, University of Granada, Spain

ABSTRACT

Requena, B., M. Zabala, P. Padial, and B. Feriche. Sodium bicarbonate and sodium citrate: Ergogenic aids? J. Strength Cond. Res. 19(1):213–224. 2005.—Numerous studies have used exogenous administration of sodium bicarbonate (NaHCO3) and sodium citrate (Na-citrate) in an attempt to enhance human performance. After ingestion of NaHCO3 and Na-citrate, two observations have been made: (a) There was great individual variability in the ergogenic benefit reached, which can be attributed to the level of physical conditioning of the subjects and to their tolerance of the buffer substance; and (b) the subjects who had ingested NaHCO3 and Na-citrate show higher levels of pH, bicarbonate, and lactate ions concentrations in their exercising blood than do the subjects who had ingested the placebo. A majority of the studies have suggested that the ingestion of both substances provides an ergogenic effect due to the establishment and maintenance of an elevated pH level during exercise. However, the exact mechanism by which the ergogenic effects occur has not been demonstrated conclusively. Sodium bicarbonate and Na-citrate seem to be effective in activities with a sufficient duration to generate a difference in the hydrogen ion gradient, characterized by a very high intensity and involving large muscular groups. However, in activities of equally high intensity, but with longer duration, the results obtained have been conflicting and inconclusive.

[geesler]

TweetThe Journal of Strength and Conditioning Research: Vol. 7, No. 4, pp. 241–249.

Effects of Bicarbonate Ingestion on Leg Strength and Power During Isokinetic Knee Flexion and Extension
Jeff Coombes and Lars R. McNaughton

Human Performance Laboratory, Centre for Physical Education, University of Tasmania at Launceston, Newnham, Tasmania, Australia 7250.

ABSTRACT

The aim of this experiment was to determine whether sodium bicarbonate ingestion of a 300 mg · kg−1 body mass dose improved either total work or peak torque values during isokinetic leg ext/flex exercise in 9 healthy male subjects using a Cybex 340 isokinetic dynamometer under control, alkalotic, and placebo conditions. Basal and pre- and postexercise arterialized venous blood samples were collected and analyzed for lactate, pH, partial pressure of O2 and CO2, base excess, and blood bicarbonate. Preexercise, the bicarbonate increased the blood pH levels, indicating a state of induced metabolic alkalosis. Postexercise in all conditions, blood pH was significantly lower than preexercise values, indicating that metabolic acidosis had occurred. The amount of work and peak torque completed in the control and placebo trials was not significantly different. During the experimental trial, however, more work was completed than in either the control or placebo conditions, and peak torque also increased. This suggests that bicarbonate could be used as an ergogenic aid during isokinetic work and enables the athlete to become more powerful.

[geesler]

TweetThe Journal of Strength and Conditioning Research: Vol. 18, No. 2, pp. 306–310.

Combined Creatine and Sodium Bicarbonate Supplementation Enhances Interval Swimming
Antti A. Mero, Kari L. Keskinen, Marko T. Malvela, and Janne M. Sallinen

Department of Biology of Physical Activity, University of Jyväskylä, Finland

ABSTRACT

Mero, A.A., K.L. Keskinen, M.T. Malvela, and J.M. Sallinen. Combined creatine and sodium bicarbonate supplementation enhances interval swimming. J. Strength Cond. Res. 18(2):306–310. 2004.—This study examined the effect of simultaneous supplementation of creatine and sodium bicarbonate on consecutive maximal swims. Sixteen competitive male and female swimmers completed, in a randomized order, 2 different treatments (placebo and a combination of creatine and sodium bicarbonate) with 30 days of washout period between treatments in a double-blind crossover procedure. Both treatments consisted of placebo or creatine supplementation (20 g per day) in 6 days. In the morning of the seventh day, there was placebo or sodium bicarbonate supplementation (0.3 g per kg body weight) during 2 hours before a warm-up for 2 maximal 100-m freestyle swims that were performed with a passive recovery of 10 minutes in between. The first swims were similar, but the increase in time of the second versus the first 100-m swimming time was 0.9 seconds less (p < 0.05) in the combination group than in placebo. Mean blood pH was higher (p < 0.01–0.001) in the combination group than in placebo after supplementation on the test day. Mean blood pH decreased (p < 0.05) similarly during the swims in both groups. Mean blood lactate increased (p < 0.001) during the swims, but there were no differences in peak blood lactate between the combination group (14.9 ± 0.9 mmol·L−1) and placebo (13.4 ± 1.0 mmol·L−1). The data indicate that simultaneous supplementation of creatine and sodium bicarbonate enhances performance in consecutive maximal swims.

[geesler]

TweetThe Journal of Strength and Conditioning Research: Vol. 17, No. 1, pp. 12–19.

Effects of Recovery Beverages on Glycogen Restoration and Endurance Exercise Performance
MICHAEL B. WILLIAMS and PETER B. RAVEN

Cardiovascular Research Institute, University of North Texas, Health Science Center at Fort Worth, Texas 76107
DONOVAN L. FOGT and JOHN L. IVY

Exercise Physiology and Metabolism Laboratory, Department of Kinesiology and Health Education, University of Texas at Austin, Texas 78712

ABSTRACT

The restorative capacities of a high carbohydrate-protein (CHO-PRO) beverage containing electrolytes and a traditional 6% carbohydrate-electrolyte sports beverage (SB) were assessed after glycogen-depleting exercise. Postexercise ingestion of the CHO-PRO beverage, in comparison with the SB, resulted in a 55% greater time to exhaustion during a subsequent exercise bout at 85% maximum oxygen consumption (O2max). The greater recovery after the intake of the CHO-PRO beverage could be because of a greater rate of muscle glycogen storage. Therefore, a second study was designed to investigate the effects of after exercise CHO-PRO and SB supplements on muscle glycogen restoration. Eight endurance-trained cyclists (O2max = 62.1 ± 2.2 ml·kg–1 body wt·min–1) performed 2 trials consisting of a 2-hour glycogen-depletion ride at 65–75% O2max. Carbohydrate-protein (355 ml; 0.8 g carbohydrate (CHO)·kg–1 body wt and 0.2 g protein·kg–1 body wt) or SB (355 ml; 0.3 g CHO·kg–1 body wt) was provided immediately and 2 hours after exercise. Trials were randomized and separated by 7–15 days. Ingestion of the CHO-PRO beverage resulted in a 17% greater plasma glucose response, a 92% greater insulin response, and a 128% greater storage of muscle glycogen (159 ± 18 and 69 ± 32 μmol·g–1 dry weight for CHO-PRO and SB, respectively) compared with the SB (p < 0.05). These findings indicate that the rate of recovery is coupled with the rate of muscle glycogen replenishment and suggest that recovery supplements should be consumed to optimize muscle glycogen synthesis as well as fluid replacement.

Reference Data:Williams, M.B., P.B. Raven, D.L. Fogt, and J.L. Ivy. Effects of recovery beverages on glycogen restoration and endurance exercise performance.