scholarly journals Dietary Acid-Base Balance in High-Performance Athletes

2020 ◽  
Vol 17 (15) ◽  
pp. 5332 ◽  
Author(s):  
Marius Baranauskas ◽  
Valerija Jablonskienė ◽  
Jonas Algis Abaravičius ◽  
Laimutė Samsonienė ◽  
Rimantas Stukas
Keyword(s):  
Body Weight ◽  
Muscle Mass ◽  
High Performance ◽  
Bioelectrical Impedance ◽  
The Body ◽  
Survey Method ◽  
Acid Base Balance ◽  
Acid Base ◽  
Base Balance ◽  
Dietary Acid

Physical exercise leads to metabolic changes that affect the acid-base balance in skeletal muscles and other tissues. Nutrition is one of the factors that may influence the acid-base balance in the body. Keeping alkaline circumstances in the body is important not only for health and athletic performance in training but also during competition in many sport events. This is especially significant for athletes who practice in sport at the highest level of competition. The aim of the study was to determine the dietary acid-base balance in competitive Lithuanian high-performance athletes, and to evaluate the effect of actual diets of athletes on NEAP (net endogenous acid production), muscle mass and body mineral content during a four-year Olympic cycle. The research participants were 18.1 ± 3.3-year-old Lithuanian high performance athletes (n = 323). The actual diet was investigated using the 24 h recall dietary survey method. The measurements of body composition were performed using BIA (bioelectrical impedance analysis). The potential renal acid load of the diets of athletes (dietary PRAL) and NEAP were calculated. In 10.2% of athletes, NEAP exceeds 100 mEq · day−1 and is on average 126.1 ± 32.7 mEq · day−1. Higher NEAP in athletes is associated with lower muscle mass (β -1.2% of body weight, p < 0.001) but has no effect on the amount of minerals in the body (β 0.01% of body weight, p = 0.073). Overall, 25–30% of Lithuanian high-performance athletes use high-protein diets (2.0–4.8 g · kg−1 · day−1) leading to a dietary acid-base imbalance as well as an excessive production of endogenous acids in the body. Athletes are recommended to consume higher amounts of potassium and magnesium. An increase in calcium intake up to 1500 mg per day is recommended. In exceptional cases, periodised nutrition for athletes may involve diets complemented with bicarbonate and/or beta-alanine supplements.

scholarly journals Lithuanian Olympic Basketball Players’ Nutrition during the Training Mezzo-Cycles Designed for Strength Training

2018 ◽  
Vol 3 (90) ◽  
Author(s):  
Marius Baranauskas ◽  
Linas Tubelis ◽  
Rimantas Stukas ◽  
Edmundas Švedas ◽  
Laimutė Samsonienė ◽  
...  
Keyword(s):  
Nutritional Status ◽  
Protein Intake ◽  
Negative Impact ◽  
Survey Method ◽  
Composition Analysis ◽  
Acid Base Balance ◽  
Acid Base ◽  
Basketball Players ◽  
Base Balance ◽  
Dietary Acid

Research  background  and  hypothesis.  Unbalanced  nutritional  status,  incorrect  qualitative  and  quantitative content of nutritional and bioactive substances (nutrition value) for athletes in strength and speed sports can have a negative impact on acid-base homeostasis and physical working performance. Hypothesis – there is a dietary acid-base balance in the Lithuanian Olympic basketball team players’ food rations. Research aim was to assess dietary acid-base balance in Lithuanian high-performance basketball players during the training mezzo-cycles designed for strength training.Research methods. In the general preparation period, Lithuanian Olympic Team basketball players (n = 52), aged 18.0 ± 1.9 years, training 197.9 ± 58.7 min a day, 6 days a week on average, were tested. Body composition  analysis  of  athletes  was  performed  using  bioelectrical  impedance  analysis  (BIA)  method. Applying  the  survey  method we investigated and assessed the nutritional status of basketball players, possible effect of their dietary intake  on potential renal acid load (PRAL) and net endogenous acid production (NEAP).Research results. The dietary PRAL of more than half (67.3%) of subjects was positive (8.5 ± 49.0 mEq/day). Basketball players’ protein intake was positively related to dietary PRAL (r = 0.408, p = 0.003). Protein intake of 20.5% of male basketball players on average was 2.6 ± 0.7 g/kg body weight, and their dietary PRAL was 75.5 ± 22.8 mEq/day, NEAP – 128.5 ± 23.7 mEq/day. Discussion and conclusions. If high-protein diet (protein intake meets 1.8–2.0 g/kg BW) is followed, basketball players’ nutritional habits should be changed. Athletes are recommended to consume significantly more fresh fruits and vegetables and/or enrich the normal diet by sodium bicarbonate and/or beta-alanine dietary supplements.Keywords: basketball, acid-base balance, renal acid overload.

Higher Dietary Acidity is Associated with Lower Bone Mineral Density in Postmenopausal Iranian Women, Independent of Dietary Calcium Intake

2014 ◽  
Vol 84 (3-4) ◽  
pp. 0206-0217 ◽  
Author(s):  
Seyedeh-Elaheh Shariati-Bafghi ◽  
Elaheh Nosrat-Mirshekarlou ◽  
Mohsen Karamati ◽  
Bahram Rashidkhani
Keyword(s):  
Calcium Intake ◽  
Dietary Calcium ◽  
Dietary Calcium Intake ◽  
Dietary Intakes ◽  
Iranian Women ◽  
Acid Base Balance ◽  
Mineral Density ◽  
Acid Base ◽  
Base Balance ◽  
Dietary Acid

Findings of studies on the link between dietary acid-base balance and bone mass are relatively mixed. We examined the association between dietary acid-base balance and bone mineral density (BMD) in a sample of Iranian women, hypothesizing that a higher dietary acidity would be inversely associated with BMD, even when dietary calcium intake is adequate. In this cross-sectional study, lumbar spine and femoral neck BMDs of 151 postmenopausal women aged 50 - 85 years were measured using dual-energy x-ray absorptiometry. Dietary intakes were assessed using a validated food frequency questionnaire. Renal net acid excretion (RNAE), an estimate of acid-base balance, was then calculated indirectly from the diet using the formulae of Remer (based on dietary intakes of protein, phosphorus, potassium, and magnesium; RNAERemer) and Frassetto (based on dietary intakes of protein and potassium; RNAEFrassetto), and was energy adjusted by the residual method. After adjusting for potential confounders, multivariable adjusted means of the lumbar spine BMD of women in the highest tertiles of RNAERemer and RNAEFrassetto were significantly lower than those in the lowest tertiles (for RNAERemer: mean difference -0.084 g/cm2; P=0.007 and for RNAEFrassetto: mean difference - 0.088 g/cm2; P=0.004). Similar results were observed in a subgroup analysis of subjects with dietary calcium intake of >800 mg/day. In conclusion, a higher RNAE (i. e. more dietary acidity), which is associated with greater intake of acid-generating foods and lower intake of alkali-generating foods, may be involved in deteriorating the bone health of postmenopausal Iranian women, even in the context of adequate dietary calcium intake.

The highs and lows of electrolytes part 2: calcium, phosphate and magnesium

2021 ◽  
Vol 12 (1) ◽  
pp. 20-25
Author(s):  
Paula Anderson
Keyword(s):  
Critical Care ◽  
Calcium Phosphate ◽  
The Body ◽  
Cellular Functions ◽  
Acid Base Balance ◽  
Acid Base ◽  
Base Balance ◽  
Critical Care Patients

There are six electrolytes that are important in maintaining homeostasis within the body. They play vital roles in regulating neurological, myocardial, muscular and cellular functions and are involved in fluid and acid–base balance. Recognising and treating electrolyte derangements is an important role for veterinary nurses especially in emergency and critical care patients. This series of two articles will discuss the physiology behind each of the six major electrolytes and discuss to monitor and treat any abnormalities.

scholarly journals Dietary acid–base balance and intake of bone-related nutrients in Cambridge teenagers

2004 ◽  
Vol 58 (11) ◽  
pp. 1462-1471 ◽  
Author(s):  
C J Prynne ◽  
F Ginty ◽  
A A Paul ◽  
C Bolton-Smith ◽  
S J Stear ◽  
...  
Keyword(s):  
Acid Base Balance ◽  
Acid Base ◽  
Base Balance ◽  
Dietary Acid

scholarly journals Status Asthmaticus

2017 ◽  
Vol 15 (9-10) ◽  
pp. 269
Author(s):  
J.S Partana
Keyword(s):  
Body Weight ◽  
Status Asthmaticus ◽  
Fluid Administration ◽  
Acid Base Balance ◽  
Acid Base ◽  
Extreme Caution ◽  
Electrolyte Disturbances ◽  
Oxygen Administration ◽  
Base Balance ◽  
Normal Acid

The therapy of status asthmaticus must be rational. Thus it is important to evaluate: 1. the severity and duration of an asthmatic attack. 2. the degree of dehydration. 3. whether infection plays a role. 4. all medication previously administered. 5. any possible complication.Treatment is as follows :Fluid and electrolyte therapy is important not only for the correction of dehydration and electrolyte disturbances but also for preventing inspissation of mucus in the bronchi. The best route of fluid administration is intravenous.Potassium iodide orally administered may be helpful as an expectorant.After hydration and normal acid-base balance have been established, epinephrine may be of benefit.Aminophylline is effective when administered intravenously. It should be used with extreme caution: the dose should not exceed 3 mg per kg of body weight, it should be given slowly and should not be given more frequently than every 8 hours.Corticosteroids should be administered, especially in cases who have received suppressive doses previously.Humidified oxygen administration is of the utmost importance.Antibiotics are recommended when infection is suspected.Management of complications.

Role of peripheral chemoreceptors and central chemosensitivity in the regulation of respiration and circulation.

1982 ◽  
Vol 100 (1) ◽  
pp. 23-40 ◽  
Author(s):  
R G O'Regan ◽  
S Majcherczyk
Keyword(s):  
The Body ◽  
Ion Concentration ◽  
Regulation Of Respiration ◽  
Acid Base Balance ◽  
Acid Base ◽  
Vascular Effects ◽  
Peripheral Chemoreceptor ◽  
Hydrogen Ion Concentration ◽  
Central Chemosensitivity ◽  
Base Balance

Adjustments of respiration and circulation in response to alterations in the levels of oxygen, carbon dioxide and hydrogen ions in the body fluids are mediated by two distinct chemoreceptive elements, situated peripherally and centrally. The peripheral arterial chemoreceptors, located in the carotid and aortic bodies, are supplied with sensory fibres coursing in the sinus and aortic nerves, and also receive sympathetic and parasympathetic motor innervations. The carotid receptors, and some aortic receptors, are essential for the immediate ventilatory and arterial pressure increases during acute hypoxic hypoxaemia, and also make an important contribution to respiratory compensation for acute disturbances of acid-base balance. The vascular effects of peripheral chemoreceptor stimulation include coronary vasodilation and vasoconstriction in skeletal muscle and the splanchnic area. The bradycardia and peripheral vasoconstriction during carotid chemoreceptor stimulation can be lessened or reversed by effects arising from a concurrent hyperpnoea. Central chemoreceptive elements respond to changes in the hydrogen ion concentration in the interstitial fluid in the brain, and are chiefly responsible for ventilatory and circulatory adjustments during hypercapnia and chronic disturbances of acid-base balance. The proposal that the neurones responsible for central chemoreception are located superficially in the ventrolateral portion of the medulla oblongata is not universally accepted, mainly because of a lack of convincing morphological and electrophysiological evidence. Central chemosensitive structures can modify peripheral chemoreceptor responses by altering discharges in parasympathetic and sympathetic nerves supplying these receptors, and such modifications could be a factor contributing to ventilatory unresponsiveness in mild hypoxia. Conversely, peripheral chemoreceptor drive can modulate central chemosensitivity during hypercapnia.

Acid-Base Balance with Different Capd Solutions

1996 ◽  
Vol 16 (1_suppl) ◽  
pp. 126-129 ◽  
Author(s):  
Mariano Feriani ◽  
Claudio Ronco ◽  
Giuseppe La Greca
Keyword(s):  
Acid Production ◽  
Dwell Time ◽  
Lactate Concentration ◽  
The Body ◽  
Plasma Lactate ◽  
Acid Base Balance ◽  
Bicarbonate Concentration ◽  
Acid Base ◽  
Plasma Bicarbonate ◽  
Base Balance

Our objective is to investigate transperitoneal buffer fluxes with solution containing lactate and bicarbonate, and to compare the final effect on body base balance of the two solutions. One hundred and four exchanges, using different dwell times, were performed in 52 stable continuous ambulatory peritoneal dialysis (CAPD) patients. Dialysate effluent lactate and bicarbonate and volumes were measured. Net dialytic base gain was calculated. Patients’ acid-base status and plasma lactate were determined. In lactate-buffered CAPD solution, lactate concentration in dialysate effluent inversely correlated with length of dwell time, but did not correlate with plasma lactate concentration and net ultrafiltration. Bicarbonate concentration in dialysate effluent correlated with plasma bicarbonate and dwell time but not with ultrafiltration. The arithmetic sum of the lactate gain and bicarbonate loss yielded the net dialytic base gain. Ultrafiltration was the most important factor affecting net dialytic base gain. A previous study demonstrated that in patients using a bicarbonate-buffered solution the net bicarbonate gain is a function of dwell time, ultrafiltration, and plasma bicarbonate. By combining the predicted data of the dialytic base gain with the calculated metabolic acid production, an approximate body base balance could be obtained with both lactate and bicarbonate-buffered CAPD solutions. The body base balance in CAPD patients is self-regulated by the feedback between plasma bicarbonate concentration and dialytic base gain. The level of plasma bicarbonate is determined by the dialytic base gain and the metabolic acid production. This can explain the large interpatient variability in acid-base correction. Bicarbonate-buffered CAPD solution is equal to lactate solution in correcting acid-base disorders of CAPD patients.

scholarly journals Urine pH is an indicator of dietary acid–base load, fruit and vegetables and meat intakes: results from the European Prospective Investigation into Cancer and Nutrition (EPIC)-Norfolk population study

2008 ◽  
Vol 99 (6) ◽  
pp. 1335-1343 ◽  
Author(s):  
Ailsa A. Welch ◽  
Angela Mulligan ◽  
Sheila A. Bingham ◽  
Kay-tee Khaw
Keyword(s):  
Fruit And Vegetables ◽  
Fruit And Vegetable ◽  
Acid Base Balance ◽  
Acid Base ◽  
Urine Ph ◽  
Alkaline Urine ◽  
Base Balance ◽  
Dietary Acid ◽  
Base Load ◽  
Prospective Investigation

Evidence exists that a more acidic diet is detrimental to bone health. Although more precise methods exist for measurement of acid–base balance, urine pH reflects acid–base balance and is readily measurable but has not been related to habitual dietary intake in general populations. The present study investigated the relationship between urine pH and dietary acid–base load (potential renal acid load; PRAL) and its contributory food groups (fruit and vegetables, meats, cereal and dairy foods). There were 22 034 men and women aged 39–78 years living in Norfolk (UK) with casual urine samples and dietary intakes from the European Prospective Investigation into Cancer and Nutrition (EPIC)-Norfolk FFQ. A sub-study (n 363) compared pH in casual samples and 24 h urine and intakes from a 7 d diary and the FFQ. A more alkaline diet (low PRAL), high fruit and vegetable intake and lower consumption of meat was significantly associated with a more alkaline urine pH before and after adjustment for age, BMI, physical activity and smoking habit and also after excluding for urinary protein, glucose, ketones, diagnosed high blood pressure and diuretic medication. In the sub-study the strongest relationship was found between the 24 h urine and the 7 d diary. In conclusion, a more alkaline diet, higher fruit and vegetable and lower meat intake were related to more alkaline urine with a magnitude similar to intervention studies. As urine pH relates to dietary acid–base load its use to monitor change in consumption of fruit and vegetables, in individuals, warrants further investigation.

scholarly journals Growth rate and acid-base balance in turkeys fed a silage-containing diet modified by different dietary cation-anion difference

2017 ◽  
Vol 73 (12) ◽  
pp. 786-791
Author(s):  
Kamil Gruszczyński ◽  
Wacław Strobel ◽  
Marta Wójcik ◽  
Urszula Kosior-Korzecka ◽  
Joanna Wessely-Szponder ◽  
...  
Keyword(s):  
Body Weight ◽  
Body Weight Gain ◽  
Diet Group ◽  
Control Group ◽  
Standard Diet ◽  
Acid Base Balance ◽  
Acid Base ◽  
Base Balance ◽  
Group B ◽  
Group D

The aim of the study was to find the responses of acid-base parameters and performance parameters of turkeys to a corn silage (CS) diet with different values of the dietary cation-anion difference (DCAD). The turkeys were fed as follows: group A (control) – standard diet (SD) (60%) plus CS (40%); group B – SD (60%), CS (40%) plus 240 g of CaCl2 per100 kg of diet; group C – SD (60%), CS (40%) plus 480 g of CaCl2 per 100 kg of diet; group D – SD (60%), CS (40%) plus 240 g of NaHCO3 per 100 kg of diet; group E – SD (60%), CS (40%) plus 480 g NaHCO3 per 100 kg of diet. The addition of the smaller amount of CaCl2 reduced DCAD, which ranged between 49.75 ± 6.29 mEq/kg DM and 93.56 ± 3.34 mEq/kg DM. An increased content of CaCl2 led to high, negative values of DCAD. NaHCO3 supplemented in both doses resulted in a significant elevation of DCAD. The addition of CS to the SD led to a lower body weight in comparison to that in the B, C, D and E groups. Forage acidification and alkalization improves body weight gain (BWG) at every stage of feeding. Compared to the control group, the anion gap was insignificantly lower in birds exposed to the acidic diet, and was comparable to the decrease in HCO3 –. Conversely, the addition of NaHCO3 to the diet led to a marked elevation in HCO3 – to 29.63 ± 0.4 mEq/L in group D and to 30.3 ± 0.69 mEq/l in group E. In conclusion, a change in DCAD during the feeding of forage containing CS exerts stimulatory effects on productive parameters of turkeys....

scholarly journals Associations between Dietary Acid Load and Biomarkers of Inflammation and Hyperglycemia in Breast Cancer Survivors

Nutrients ◽  
2019 ◽  
Vol 11 (8) ◽  
pp. 1913 ◽  
Author(s):  
Tianying Wu ◽  
Phoebe Seaver ◽  
Hector Lemus ◽  
Kathryn Hollenbach ◽  
Emily Wang ◽  
...  
Keyword(s):  
Breast Cancer ◽  
Metabolic Acidosis ◽  
Cancer Survivors ◽  
Breast Cancer Survivors ◽  
Acid Base Balance ◽  
Acid Base ◽  
Dietary Acid Load ◽  
Base Balance ◽  
Dietary Acid ◽  
Acid Load

Metabolic acidosis can lead to inflammation, tissue damage, and cancer metastasis. Dietary acid load contributes to metabolic acidosis if endogenous acid–base balance is not properly regulated. Breast cancer survivors have reduced capacities to adjust their acid–base balance; yet, the associations between dietary acid load and inflammation and hyperglycemia have not been examined among them. We analyzed data collected from 3042 breast cancer survivors enrolled in the Women’s Healthy Eating and Living (WHEL) Study who had provided detailed dietary intakes and measurements of plasma C-reactive protein (CRP) and hemoglobin A1c (HbA1c). Using a cross-sectional design, we found positive associations between dietary acid load and plasma CRP and HbA1c. In the multivariable-adjusted models, compared to women with the lowest quartile, the intakes of dietary acid load among women with the highest quartile showed 30–33% increases of CRP and 6–9% increases of HbA1c. Our study is the first to demonstrate positive associations between dietary acid load and CRP and HbA1c in breast cancer survivors. Our study identifies a novel dietary factor that may lead to inflammation and hyperglycemia, both of which are strong risk factors for breast cancer recurrence and comorbidities.

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