What Is the Purpose of Nutritional and Non-medicated Supplementation?
A dietary supplement is defined as adding food, food component, nutrient, and non-food compound to the usual diet to enhance or improve health and performance. Supplements include vitamins, minerals, herbs, amino acids, metabolites, or combinations of any of these or other components. A wide variety of nutritional products are marketed as sports food or dietary supplements with the claim that they will enhance performance and health during practice, competitions, recovery time, improve immune functions, etc. And a few athletes and non-athletic individuals take these supplements to improve their performance. As performance-enhancing drug testing has expanded to all levels of competition, athletes have begun using more over-the-counter nutritional supplements. More than 47 percent of athletes participating in the 2004 Athens Olympics reported using nutritional supplements.
Sports supplements are poorly regulated in many countries and sometimes lead to doping violations. Most supplements are not tested for contamination or labeled accurately, and many contain unlisted ingredients. The manufacturer may have either added additives not listed on the label that provide the beneficial effects advertised by the manufacturer, or it may have been unintentionally contaminated. So it is always important to take supplements approved by the FDA (The United States food and drug administration).
What Are the Types of Nutritional and Non-medication Supplements Permitted for Performance Enhancement?
A. Creatinine:
A nutritional supplement containing creatine is the most popular performance enhancement choice. A study has shown that it improves short-intensity exercise performance and is not prohibited by WADA (world anti-doping agency). Various products containing creatine are available in the market, primarily as powders.
A naturally occurring molecule called creatine is produced from three amino acids (methionine, glycine, and arginine). Around 95 percent of them are stored in skeletal muscle, with the remaining amounts kept in the brain, testicles, and kidneys. About 65 percent of the creatine in muscle is present as phosphocreatine. For the quick resynthesis of adenosine triphosphate (ATP), which muscles need for energy during shorter, strenuous exercise, phosphocreatine is a source of phosphate. The frequency of phosphocreatine resynthesis between these sessions is improved by creatine supplementation, which improves recovery and performance.
Additionally, creatine may have anabolic effects (performance) on the body by upregulating genes and boosting the enzyme activity that takes part in protein synthesis and other anabolic processes.
Numerous studies have shown that taking creatine supplements improves the ability to execute multiple sessions of 6 to 30-second intense exercise (such as sprinting or heavy weightlifting) with minimal recovery periods (20 seconds to 5 minutes). Creatine supplementation and resistance training enhanced the maximum weight lifting and squat in a meta-analysis of seven trials, including young males.
B. Proteins, Amino Acids, and Branched-Chain Amino Acids:
Proteins and their amino acids have received widespread attention as muscle-building supplements. The most prevalent amino acids in muscle are the branched-chain amino acids(BCAAs), leucine, valine, and isoleucine. Although the body cannot produce them, considerable levels can be found in dairy and red meat. Vegetarians can achieve the required amounts if they consume enough legumes, nuts, grains, and seeds daily.
During exercise, BCAAs are oxidized in the muscle. Manufacturers of BCAA supplements claim that their products boost endurance, lessen muscular pain after exercise, and fuel working muscles. However, despite athletes frequently using BCAAs, there needs to be more solid proof of their effectiveness, especially when compared to eating a diet strong in meat, which is less expensive. According to some estimates, a chicken breast has the same amount of supplement as seven standard tablets.
C. Glutathione:
An essential intracellular antioxidant called glutathione helps control reactive oxygen. Glutamate, cysteine, and glycine are the building blocks creating glutathione. Additionally, glutathione is crucial for cellular signaling and transcription activities, some of which are implicated in skeletal muscle's response to exercise.
According to these roles, several researchers have hypothesized that boosting glutathione levels by supplementation or enhanced production may improve athletic performance. But there is no solid, conclusive proof that supplementing with glutathione or its precursor amino acids enhances athletic performance.
D. Glutamine and Glutamate:
Glutamine is a prevalent, non-essential amino acid that aids glutathione formation and regulates the body's balance of acids and bases. It is observed that glutamine, which is normally converted to glutamate during metabolism, has anabolic and immunological properties that are advantageous to athletes. About three to six grams are recommended for daily consumption.
Glutamate levels are depleted during vigorous athletic training, and this has been linked to the impaired immunological response observed in some endurance athletes. However, there is little proof that supplementing with glutamine boosts immune system performance, lowers protein breakdown or muscle pain, or increases protein synthesis. Additionally, a few studies have suggested that glutamine supplementation reduces the occurrence of upper respiratory tract infections in athletes who undertake extensive training.
E. Cystine and Cysteine:
The tripeptide glutathione comprises three amino acids: cysteine, glycine, and glutamate. Because the other two amino acids are often abundant in the body, cysteine is a source of tripeptide glutathione. Although there have not been enough studies to verify this idea, taking more cysteine supplements may theoretically boost performance by preventing tiredness. The cysteine-donor N-acetyl cysteine raises glutathione levels in the blood and the muscles. In short observational research, N-Acetyl cysteine supplementation for 30 days improved exercise performance. Although these enhancements only happened in people with low baseline glutathione concentrations.
F. Arginine:
Some studies suggest that arginine boosts growth hormone and insulin production, boosts tissue creatine levels, and generally enhances performance. Even though arginine is included in several supplements targeted at bodybuilders and weight lifters, there is no proof that supplementing with it enhances athletic performance.
G. Colostrum:
Mammalian lactation products like colostrum are produced 24 to 72 hours after giving birth. It is abundant in immune cells, antibacterial agents, and growth factors. Studies on the performance-enhancing benefits of colostrum supplementation have yielded mixed results. Bovine (cattle like buffaloes) colostrum is used to make colostrum supplements, which can be purchased as liquids, capsules, pills, or powders.
Some people think that colostrum's growth factors have ergogenic (a substance or technique deployed to improve performance) benefits. And a few believe that colostrum's insulin-like growth factor-1 (IGF-1) boosts strength. While some trials with prolonged colostrum supplementation (for eight weeks with 10 to 60 g every day) indicate improved peak sprint cycle power, endurance performance, and vertical jump.
H. Dietary Antioxidants:
Some athletes supplement with antioxidants to boost immune system health and lessen the effects of training on muscle deterioration and tiredness. A few studies claim that antioxidants can reduce the harmful effects of reactive oxygen species (free radicals) created during intense physical exertion.
However, despite some studies showing decreased oxidative stress, antioxidant supplementation has not consistently been found to lessen muscle deterioration or pain after intense exercise. It also does not have an ergogenic effect on sports performance.
I. Nitrates:
NO (nitric oxide) has a variety of metabolic functions, some of which affect skeletal muscle activity. According to preliminary research, nitrate supplementation is intended to boost nitric oxide bioavailability and may lessen exercise tiredness and enhance performance during short-duration exercise (around 15 minutes). Nitric oxide has essential functions in vasodilatation, platelet aggregation, immunological function, mitochondrial function, and hormone control.
Nitric oxide generation rises during exercise in skeletal muscle. Nitric oxide is believed to boost glucose absorption by skeletal muscles during exercise independently of any increase in muscle blood flow. This increases the therapeutic effects of exercise.
J. Beta-Alanine and Carnosine:
Beta-alanine and histidine make up the dipeptide carnosine, which is crucial for skeletal muscle's ability to regulate its acid-base balance by serving as an intracellular buffer for roughly 10 percent of the proton buffering that takes place in muscles during intense exercise. Carnosine also has a role in glycation (attachment of sugar to the protein) and may act as an antioxidant. Additionally, it might improve the effectiveness of excitation-contraction coupling when a muscle fiber contracts.
K. Carnitine:
Carnitine is mostly consumed through meat, fish, poultry, and some dairy products. It is found in skeletal and heart muscles. Muscle carnitine reserves are decreased in vegetarians. Carnitine contributes to the oxidation of long-chain fatty acids and the metabolism of carbohydrates during vigorous exercise. Carnitine supplementation has been proposed to improve performance by conserving glycogen at lower exercise intensities.
L. Phosphates:
After calcium, phosphorus is the second most prevalent mineral in the body. Both are essential for bone and dental health, while phosphate is crucial for energy metabolism. Several studies have found that oral supplementation of three to four grams per day for three to six days improves maximal oxygen consumption, anabolic threshold, and simulated race performances.
M. Caffeine:
Caffeine was prohibited for athletic use from 1998 to 2003, but in 2016, WADA removed caffeine from the prohibited list. Even short-duration, high-intensity activity (one to five minutes) seems to benefit from caffeine, as does extended submaximal exercise (more than 90 minutes), continuous high-intensity training (20 to 60 minutes), and so on.
Additionally, a meta-analysis of 12 randomized studies, including 151 people, found that acute caffeine administration boosts movement velocity during resistance training at low, moderate, and high loads and in both the upper and lower body. This suggests that caffeine is advantageous for activities requiring forceful movements, such as weightlifting, throwing and jumping, and other similar sports. Additionally, it has beneficial effects like increasing the release of adrenaline, increasing inotropy of the heart muscle, enhancing skeletal muscle contractility, reducing tiredness and preserving glycogen.
N. Energy Beverage:
The intake of beverages, especially for sports, started with drinks formulated to substitute the lost or deprived electrolytes and carbohydrates during intense workouts or sports activity. The authentic drinks are sports drinks and subsequently incorporate a low ratio of carbohydrate solution and a blend of electrolytes to permit maximal, quick absorption in the gut. The more recently formulated energy drinks include various stimulants and other additives, including caffeine, taurine (a natural sulfur-containing amino acid), glucuronolactone (a chemical used to make energy drinks and is also naturally found in the human body), vitamin B, antioxidants, trace minerals, guarana (an amazon native plant), ginseng (Ashwagandha), L-carnitine (a chemical produced by the brain that helps converts fat to energy), and sucrose (sugar).
Conclusion:
Both amateur and professional athletes use a variety of nutritional and non-hormonal performance-enhancing chemicals, excluding prescription drugs. These include energy beverages, dietary supplements, and stimulants. Creatine, protein and amino acids, antioxidants, and other common dietary supplements are consumed specifically to increase performance. Even though there have not been many studies to support the alleged advantages of these supplements, important information has been examined and followed accordingly for beneficial purposes.
