Effects of phosphorus-containing calcium preparation (bone meal powder) and calcium carbonate on serum calcium and phosphorus in young and old healthy volunteers: a double-blinded crossover study

2000 ◽  
Vol 18 (6) ◽  
pp. 321-327
Author(s):  
Minoru Tsuboi ◽  
Masataka Shiraki ◽  
Michiyasu Hamada ◽  
Hideo Shimodaira
Keyword(s):  
Calcium Carbonate ◽  
Crossover Study ◽  
Healthy Volunteers ◽  
Serum Calcium ◽  
Bone Meal ◽  
Phosphorus Containing ◽  
Calcium And Phosphorus ◽  
Double Blinded

scholarly journals Systemic Ropivacaine Diminishes Pain Sensitization Processes: A Randomized, Double-Blinded, Placebo-Controlled, Crossover Study in Healthy Volunteers

2014 ◽  
Vol 3 (1) ◽  
pp. 45-58 ◽  
Author(s):  
Yéri Haller ◽  
Andreas R. Gantenbein ◽  
Patrick Willimann ◽  
Donat R. Spahn ◽  
Konrad Maurer
Keyword(s):  
Crossover Study ◽  
Healthy Volunteers ◽  
Pain Sensitization ◽  
Double Blinded

Effect of lanthanum carbonate vs. calcium carbonate on serum calcium in hemodialysis patients: a crossover study

2012 ◽  
Vol 78 (09) ◽  
pp. 216-223 ◽  
Author(s):  
Tatsunori Toida ◽  
Keiichi Fukudome ◽  
Shouichi Fujimoto ◽  
Kazuhiro Yamada ◽  
Yuji Sato ◽  
...  
Keyword(s):  
Calcium Carbonate ◽  
Crossover Study ◽  
Serum Calcium ◽  
Hemodialysis Patients ◽  
Lanthanum Carbonate

scholarly journals Combined Effect of Arginine, Valine, and Serine on Exercise-Induced Fatigue in Healthy Volunteers: A Randomized, Double-Blinded, Placebo-Controlled Crossover Study

Nutrients ◽  
2019 ◽  
Vol 11 (4) ◽  
pp. 862 ◽  
Author(s):  
Yuichi Tsuda ◽  
Makoto Yamaguchi ◽  
Teruyuki Noma ◽  
Eiji Okaya ◽  
Hiroyuki Itoh
Keyword(s):  
Amino Acids ◽  
Healthy Volunteers ◽  
Perceived Exertion ◽  
Ketone Bodies ◽  
Blood Analysis ◽  
Rating Of Perceived Exertion ◽  
Physical Parameters ◽  
Positive Effects ◽  
Exercise Induced ◽  
Double Blinded

Although several kinds of amino acids (AAs) are known to affect physiological actions during exercise, little is known about the combined effects of a mixture of several AAs on fatigue during exercise. The aim of the present study was to investigate the effect of an AA mixture supplement containing arginine, valine, and serine on exercise-induced fatigue in healthy volunteers. These AAs were selected because they were expected to reduce fatigue during exercise by acting the positive effects synergistically. A randomized, double-blinded, placebo-controlled crossover trial was conducted. Thirty-nine males ingested an AA mixture containing 3600 mg of arginine, 2200 mg of valine, and 200 mg of serine or a placebo each day for 14 days. On the 14th day, the participants completed an exercise trial on a cycle ergometer at 50% of VO2max for 120 min. After the two-week washout period, the participants repeated the same trial with the other test sample. The participant’s feeling of fatigue based on a visual analog scale (VAS) and a rating of perceived exertion (RPE), as well as blood and physical parameters were evaluated. The feeling of fatigue based on VAS and RPE were significantly improved in AA compared to those in placebo. In the blood analysis, the increase in serum total ketone bodies during exercise and plasma tryptophan/branched-chain amino acids were significantly lower in AA than those in placebo. The present study demonstrated that supplementation with an AA mixture containing arginine, valine, and serine reduced the feeling of fatigue during exercise. The AA mixture also changed several blood parameters, which may contribute to the anti-fatigue effect.

Serum calcium and phosphorus associate with the occurrence and severity of angiographically documented coronary heart disease, possibly through correlation with atherogenic (apo)lipoproteins

2006 ◽  
Vol 44 (1) ◽  
Author(s):  
Mehdi Rasouli ◽  
Asadollah Mohseni Kiasari
Keyword(s):  
Risk Factors ◽  
Coronary Heart Disease ◽  
Heart Disease ◽  
Cardiovascular Risk ◽  
Cardiovascular Risk Factors ◽  
Serum Calcium ◽  
Calcium And Phosphorus

AbstractThe associations of serum calcium and phosphorus concentrations as well as other cardiovascular risk factors were investigated in relation to the existence and severity of coronary heart disease (CHD) in 260 clinically stable, angiographically defined CHD patients aged 40–70years. The subjects were classified as CHD

Reliability and Effect of Sodium Bicarbonate: Buffering and 2000-m Rowing Performance

2012 ◽  
Vol 7 (2) ◽  
pp. 152-160 ◽  
Author(s):  
Amelia J. Carr ◽  
Gary J. Slater ◽  
Christopher J. Gore ◽  
Brian Dawson ◽  
Louise M. Burke
Keyword(s):  
Calcium Carbonate ◽  
Confidence Interval ◽  
Sodium Bicarbonate ◽  
Pairwise Comparisons ◽  
Bicarbonate Concentration ◽  
Mean Power ◽  
Typical Error ◽  
Rowing Performance ◽  
Rowing Ergometer ◽  
Double Blinded

Purpose:The aim of this study was to determine the effect and reliability of acute and chronic sodium bicarbonate ingestion for 2000-m rowing ergometer performance (watts) and blood bicarbonate concentration [HCO3−].Methods:In a crossover study, 7 well-trained rowers performed paired 2000-m rowing ergometer trials under 3 double-blinded conditions: (1) 0.3 grams per kilogram of body mass (g/kg BM) acute bicarbonate; (2) 0.5 g/kg BM daily chronic bicarbonate for 3 d; and (3) calcium carbonate placebo, in semi-counterbalanced order. For 2000-m performance and [HCO3−], we examined differences in effects between conditions via pairwise comparisons, with differences interpreted in relation to the likelihood of exceeding smallest worthwhile change thresholds for each variable. We also calculated the within-subject variation (percent typical error).Results:There were only trivial differences in 2000-m performance between placebo (277 ± 60 W), acute bicarbonate (280 ± 65 W) and chronic bicarbonate (282 ± 65 W); however, [HCO3−] was substantially greater after acute bicarbonate, than with chronic loading and placebo. Typical error for 2000-m mean power was 2.1% (90% confidence interval 1.4 to 4.0%) for acute bicarbonate, 3.6% (2.5 to 7.0%) for chronic bicarbonate, and 1.6% (1.1 to 3.0%) for placebo. Postsupplementation [HCO3−] typical error was 7.3% (5.0 to 14.5%) for acute bicarbonate, 2.9% (2.0 to 5.7%) for chronic bicarbonate and 6.0% (1.4 to 11.9%) for placebo.Conclusion:Performance in 2000-m rowing ergometer trials may not substantially improve after acute or chronic bicarbonate loading. However, performances will be reliable with both acute and chronic bicarbonate loading protocols.

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