Margarine, shortening, most commercially packaged cookies, cakes and crackers, some commercial processed snacks and sweets, some French fries and other fried fast food. Add some type of fatty fish, like salmon, to your grocery list and buy one next time you shop. Carl Juneau shows guys how to get defined abs using a unique combination of carefully ordered abs exercises. Protein intake has been a source of much controversy among medical doctors, registered dieticians, nutritionists, scientific researchers and, of course, all kinds of athletes. Athletes universally believe that high-protein diets increase performance and or muscle mass. Conservative research studies are designed to figure out how much protein is needed to prevent deficiency.
Numerous well - controlled research studies have been done to determine the exact amount of protein needed in athletes and weightlifters to achieve nitrogen balance. In Figure 1, different protein intakes were compared and the resulting nitrogen balances were reported.
Many athletes are convinced that even higher levels of protein consumption beyond what Drs.
Lemon tends to agree in at least one case, and suggests that when using anabolic agents (i.e. Athletic performance is dependent on many factors including skill level, conditioning, and team or individual strategies.
The bottom line is that it appears better to over-eat than to under-eat protein when someone's trying to add muscle mass while keeping body fat off. However, while protein is not a great pre-game meal, athletes usually follow year-round intense training programs.
During dieting, this may enhance calorie expenditure and therefore the rate of fat loss [Blacklevin et al. In addition to the calorie burning effects of protein, higher protein intakes can increase the release of the hormone glucagon from the pancreas [Guntiak et al. So again, higher protein intakes may lead to losses in body fat due to the thermogenic effects as well as the hormonal effects of eating protein.
Additionally, in applicable human studies, protein and branched-chain amino acid supplements have been shown to increase the IGF-1 response to eating and to exercise [Kraemer et al. Finally, increasing the percentage of protein in the diet while decreasing the percentage of carbohydrates and fats may have some real health advantages.
We have data showing that increasing protein intake from about 10 to 20% while decreasing carbohydrate intake from 55 to 45% (with fats kept constant at 35%) can lead to favorable changes in blood lipids.
In the previous section I suggested that not only a high protein intake, but also an excess protein intake might have some benefit to those interested in changing body composition and decreasing cardiovascular disease risks. Why are nutritionists recommending high carbohydrate diets when research has demonstrated that replacing some dietary carbohydrates with protein can lead to favorable blood lipid profiles? As the protein intake increased, Dr Wolfe made sure that the fat content of the diet stayed the same (25-35% fat) while the carbohydrate content was reduced (from about 63% to about 48%). The exact magnitude of the changes was pretty large as in one particular study, the bad fats like LDL cholesterol decreased by between 6% and 9%, while the good fats like HDL cholesterol increased by between 12% and 17% [Wolfe, 1995]. Another interesting effect of the protein increase in these studies was that the satiety levels of subjects tended to be higher with the high protein diet.
Past research has revealed that high protein intake was associated with increased calcium loss in the urine. Although studies have been published showing that in individuals with unhealthy kidneys, an excessive protein intake could place undue strain on their kidneys, healthy individuals have little to worry about with high protein diets.
A few original studies demonstrated that when protein intake was raised to 140-225g per day, excess calcium was lost from the urine at a faster rate than normal [Hegsted et al. Athletes and nutritionists have been arguing for years about whether or not protein supplements are necessary. Most athletes and nutritionists will certainly agree that protein intake should come from a variety of sources.
But, typically athletes choose protein sources that are convenient and require minimal preparation (there goes the chicken, beef and eggs).
In addition, food protein sources chosen for convenience may be missing certain amino acids necessary for growth and repair.
Protein supplements often contain very high quality protein that requires no meal planning short of remembering to grab your protein packet or protein bar on the way out the door. As you can see, protein supplements, while slightly more expensive in some cases, are not substantially more expensive than whole food sources when compared per 40g of protein. Finally, another advantage of supplemental protein sources is that they are manufactured to be digested faster than whole protein sources. The BV score gives us an indication of how much of the protein eaten remains in the body (the rest is excreted via sweat, urine, feces). Wheat protein is known to be a poor quality protein due to the fact that its limiting essential amino acid is lysine. Due to the high quality protein in animal sources, researchers have examined whether animal protein is better for getting stronger, gaining mass and losing fat than vegetarian protein.
25% of users get gas and bloating from cheap whey protein concentrate caused by the naturally occurring lactose. Since meat is a good source of high quality protein, vitamins, and minerals, it's no surprise that most athletes and gym rats eat a lot of meat.
As you can see from Table 3, whey and casein make up at least 90% of the total cow's milk protein content. 3) Cross flow micro (CFM) filtration methods have been developed in order to prevent the problems seen with ion exchange proteins.
Proteins like whey and casein can be hydrolyzed (broken into smaller pieces) by enzymes that produce small chains of amino acids called peptides.
The gastrointestinal tract prefers peptides to whole proteins or amino acids; hydrolyzed proteins are more easily broken down and absorbed into the blood stream than whole protein sources [Ziemlanski et al. After training (whether aerobic or anaerobic), the body is primed for nutrient uptake into the muscle cells.
Contain branched-chain amino acids that may be independent stimulators of protein synthesis. Hydrolyzed proteins have a higher BV score than concentrates or other protein preparations [Ziemlanski et al.
While whey and casein may have different bioactive peptides, they also have major physical differences.
When the effects of whey and casein were all calculated and the net protein synthesis or breakdown was measured, you can see from the Figure 3 that, after 120 minutes, there were no major differences in protein balance (the balance of protein synthesis and protein breakdown) between the groups.
The rate of digestion of your protein has some pretty interesting effects on protein balance in the body. Weight trainers who eat every 2-3 hours probably won't see a difference between the two types of protein.
In 2000, a study was published by Demling and DeSanti comparing body composition and strength changes in dieting overweight police officers supplementing their diets with 75 g of either a milk protein blend containing mostly casein or a whey only protein blend.
These are amazing differences and follow-up results showed that casein supplementation lead to the recovery of lean mass and muscle function twice as fast as whey supplementation [Demling and DeSanti, 1998].
Certainly a combination of whey and casein may offer the anabolic and anti-catabolic benefits of both proteins, as well as, all the bioactive peptides of both. It makes sense to categorize protein sources into two groups; the slow proteins and the fast proteins. Fast proteins would be proteins like whey isolate or concentrate as well as most protein hydrolysates (including casein, whey, etc). Both endurance and strength athletes need more protein than recommended by most nutritionists and the RDA.
In order to meet their protein requirements for the day, people need to consume a good amount of high quality protein during every meal.
They provide a very quick and easy source of protein that is comparable in price to other whole protein sources.
Supplemental proteins today are mainly milk derived protein sources including milk protein isolates, whey protein isolates, and casein. New protein technologies are emerging and showing promise in increasing athletic performance, changing body composition, and improving overall health.
In addition, he is also a well-published author, contributing to textbooks and scientific journals as well as to several bodybuilding and fitness-related newsletters and publications. Around 8 to 12 months, though, you can introduce pureed baby foods and tiny bits of table food.
These types of oils contain unsaturated, healthy fats to help baby grow without clogging his little arteries.
It's important to establish healthy eating habits and feed baby healthy forms of fat instead of too many desserts or potato chips.
While the consensus regards fat as unhealthy and increases our risk of heart disease, the polyunsaturated fats found in fish do the exact opposite: they reduce our risk of heart disease.
Historically, it has been linked to increased risk of heart disease, but this was recently challenged and is still debated. Check out his web site to discover little-known abs exercises that help to get washboard, defined abs.
Although this could just be a strong placebo effect, I think there may be some validity to these claims. Again, looking at Figure 1, it is evident that increased protein intakes above those needed to prevent deficiency will lead to a greater positive nitrogen status.
Certainly, lack of nourishment will decrease performance but eating an excess of protein, carbohydrate, or fat might not increase performance (unless you are a strength and power athlete). Excess protein calories are not as likely to be stored as body fat compared to carbs and most fats. Increasing protein intake from 11% to 23% can lead to very favorable changes in blood lipids and cardiovascular disease risk. More research on these topics is needed but until this research is done, the reports of hundreds of athletes, bodybuilders, and weightlifters have confirmed my speculation. Wolfe, a nutrition researcher at the University of Western Ontario, has been asking himself this very question for several years.
In addition, in this study, the ratio of plasma total cholesterol to HDL cholesterol (the lower the ratio the better) decreased by between 15% and 16%. Because of this, some have theorized that extra protein break down could cause strain and therefore damage to the kidney.
In this scenario, because the protein sources are limited, the athlete doesn't eat enough of them.
If this happens, although the grams of protein eaten may seem to be adequate, there can be serious deficiencies in the diet. In addition, since these protein powders are often fortified with vitamins and minerals (two other components of a balanced diet that many athletes are lacking), they may provide an easy source of other nutrients necessary for optimal nutrition and growth. Nutritionists have claimed that protein supplements are very expensive relative to their protein content and that whole food sources are cheaper.
In addition to rapid digestion, a very high percentage of good protein powders are completely digested and absorbed due to the amino acid profiles of the supplements and the lack of lactose or fat. Two of the most common are biological value (BV) and the protein digestibility corrected amino acids score (PDCAAS). From these studies it has been concluded that an omnivorous diet containing protein from several sources including various meats, eggs, and dairy is superior to a vegetarian diet containing no meat and only a small amount of dairy and eggs.
You will also see that Table 3 contains a listing of the peptides and proteins contained in both whey and casein. Many studies have shown that whey and casein proteins have different properties in the body [Shah 2000, Hambraeus et al. They can contain as much as 70% to 80% percent protein, with small amounts of lactose and minimal fats. The slow delivery of casein will lead to a small but steady increase in blood amino acids over a long period of time.
However, after 420 minutes, the casein group had a far more positive protein balance than the whey group and total synthesis was greater than total breakdown (see Figure 3). In a study by Dangin, the authors wanted to measure protein balance differences between slow digesting proteins and fast digesting proteins, independent of whey vs. A protein blend of milk protein isolates, whey isolates, and casein will probably offer the best possible combination whether dieting or trying to gain muscle. Processing methods differ between companies and we believe that some products retain more functional peptides.
Slow proteins would be whole food sources like cottage cheese, egg, beef, fish, chicken as well as supplemental protein powders containing milk and casein (isolates or concentrates). When waking up in the morning, your body has just been through a fast (6-9 hours for most people). Before you lie down and enter dreamland, you should consider taking in a final meal in anticipation of the 6-8 hour fast ahead. This additional intake can increase metabolism relative to other nutrients, prevent insulin related fat gain, optimize anabolic hormone levels, and improve cardiovascular risk profiles.
While possible with whole food sources only, this can become inconvenient from time to time. As discussed, milk proteins have several very powerful peptides that do very interesting things in the body.
In the future these proteins and others that we don't even know about may emerge as very effective anabolic, anti-catabolic, and performance enhancing aids. Berardi serves as a nutrition and training consultant to numerous athletes including: Canadian Olympic-level skiers, US Olympic and NCAA track and field athletes, world-class endurance athletes, collegiate and professional football players, strength competitors, and bodybuilders. It has given me the discipline that life success demands, and the determination to overcome obstacles. We are your personal trainer, your nutritionist,your supplement expert, your lifting partner, your support group. If your baby is lactose-intolerant or can't have dairy foods, there are plenty of food choices that contain healthy fats for growing babies. When he's ready for table foods and to feed himself, cut small pieces of the avocado and offer them to your little one with lunch or dinner or as a snack. Ground flaxseed is another source of omega-3 fatty acids, so try sprinkling it on baby's oatmeal or rice cereal for added healthy fat. Talk to your pediatrician about an appropriate amount of fat and calories for your baby and about concerns about lactose intolerance or a dairy allergy. Dietary proteins are used to repairs tissue, keep you hydrated, maintain an acid-base balance, support the production of hormones, and supply energy. Japan, where fish is a national dish (Sushi anyone?), has the world’s lowest rates of cardiovascular diseases.
Find new recipes to try with it, and begin to include fatty fish to your meal schedule 3 times per week. First, the high protein intakes could lead to a strong positive nitrogen status which, when combined with rigorous strength training, may potentiate the growth process.
Eating enough total calories is important as well, because protein needs are affected by many factors including: the type of training that you do (endurance vs. I certainly believe it's a distinct possibility that some supplements require a protein intake beyond current recommendations to exert noticeable effects. Although at these high levels of protein intake, both total body protein synthesis and protein breakdown are increased, the amount of protein that stays in the body is usually higher at the higher protein intakes (up to a point).
He believes that a ceiling may exist that prevents more muscle gain when eating above this level [Lemon, 2000]. The research is unclear whether more protein may further produce muscle gains, however, anabolic steroids theoretically increase nitrogen retention and, therefore, protein requirements. Studies examining whether very high protein intakes can enhance a variety of athletic performance have not been promising [Lemon, 2000]. This is because the metabolism and processing of protein is energy costly endeavor in that it's more thermogenic and activates hormones that help with fat loss [Lonnie Lowery, PhD.
In fact where normal diets are consumed, it is only significant (5-15% of total calories burned) for long duration endurance training [Dohm et al.
Therefore, from a recovery perspective, protein intake may be as important, or more so, to the athlete as the other macronutrients. However, the metabolic increases seen when eating protein are double those seen when eating carbohydrates or fat. For the majority of athletes, since carbohydrates and fats are essential for athletic performance, I would not recommend decreasing either in favor of more protein [Len Piche, Ph.D, RD.
In three separate studies, Dr Wolfe has shown that when increasing protein intake from about 11% of the diet to about 23% of the diet, blood markers associated with heart disease took a turn for the better [Wolfe and Piche, 1999, Wolfe, 1995, Wolfe and Giovannetti, 1991].
From the research, though, there is no data (in healthy rats or in healthy humans) that support such theories. However, in these studies, calcium intake as well as phosphorus intake was restricted and not allowed to increase in proportion to the protein intake. The consumption of a limited variety of any macronutrient (protein, carbohydrates, or fats) or micronutrient (vitamins or minerals) can lead to nutritional deficiencies.
Today many supplemental proteins are also partially hydrolyzed (broken down) when processed.
Therefore, this measure of protein quality examines the essential amino acid content of the protein in question and compares it against the human requirement for essential amino acids. Other protein sources like beans, grains, and peanuts can be eaten but are usually insufficient to provide the body with the amino acids necessary for growth. While some of their ideas can't be totally dismissed, their blanket statements against meat consumption are misguided.
Campbell, a nutrition, exercise, and metabolism researcher from the University of Arkansas, has consistently shown that lacto-ovo vegetarian eating (dairy and eggs are allowed) can interfere with the positive body composition changes seen in meat-eating older weight trainers [Campbell et al. In addition, low tempature and low acid filtration ensures that about 90% - 96% of this protein is undenatured. However some of the isolation procedures (ion-exchange procedures) lead to a denaturation or a loss of the important peptides. In fact, just like ion exchange proteins, this method produces an isolate that is greater than 90% protein with no fat or lactose. This makes hydrolysis an ideal way to process protein as long as manufacturers are careful not to denature it.
In fact hydrolyzed proteins may be absorbed in about half the time that it takes free form amino acids or whole proteins.
Higher BV scores should translate to better processing and utilization of protein in the body. Both are definitely high quality protein sources with high PDCAAS and BV scores but what differs between the two proteins is their rate of digestion and absorption into the body [Mahe et al. And these rapid rises in blood amino acids create a quick and short-lived increase in protein synthesis.
And these powerful peptides can increase nitrogen retention and the shuttling of amino acids to lean rather than fat tissues [Robert H.
During this overnight fast, the body has been using up its stored energy by slowly sending nutrients out from the liver, fat cells, and muscle cells.
Since studies have shown that an omnivorous diet is ideal for promoting positive training adaptations, lean meat sources of protein are ideal during the day. Whole food protein sources also contain creatine and other nutrients that may be beneficial to the athlete. Understanding that convenience is imperative in today's world -- I stress the need for protein supplements.
At UWO, he is conducting exercise and nutritional supplement research with renowned exercise and nutrition researcher Dr. His company, Science Link: Translating Research into Resultsa„?, specializes in providing integrated training, nutritional, and supplementation programs for high-level strength and endurance athletes.
We provide the technology, tools, andproducts you need to burn fat, build muscle, and become your best self. You can also prepare ground beef served in fine pieces for baby, as it's high in fat, protein and iron. Of course, there are fats are do cause damage to our internal systems but more on that later. Any drugs or supplements that may have an impact on anabolism may require a higher protein intake [Tim Ziegenfuss, Ph.D. Since many athletes believe in the power of protein to increase muscle mass, more studies need to be done. Therefore a high protein intake may in fact be thermogenic and may lead to increased calorie burning and fat loss. The hormone insulin prevents fat loss from adipose (fat) tissue, but glucagon is responsible for reversing this effect [Yamauchi et al.
In fact, according to the data discussed earlier, high protein diets in athletes are just enough to get these individuals to nitrogen balance.
Some rat studies have revealed that when rats were given an 80% protein diet for long periods of time, none of the rats showed any signs of kidney damage [Zaragoza et al.
Recent studies have shown that higher protein intakes usually lead to a higher bone mineral content instead [Cooper et al. In fact, in an older study conducted with female rats, kidney function seemed to be improved with high protein diets [Sterck et al. Since whole-food proteins contain both calcium and phosphorous and even protein supplements are fortified with calcium and phosphorous, it only makes sense that increases in protein intake are typically accompanied by increased dietary calcium and phosphorous. An illustration of the complexity and importance of protein and amino acid transport in the body is illustrated in Figure 2. In addition, since many food sources contain other macronutrients, (carbohydrates and fats) if an individual is interested in increasing protein intake with a minimal increase in calories from other macronutrients, fat and carbohydrate-free protein powders are ideal.
Since a protein is only as good as it's weakest link, the amino acid that is lowest in the protein source then is termed the limiting amino acid.
However, with high quality whey (like isolate, which is lactose free), these digestive nuisances greatly diminish. Therefore, ion exchange whey protein isolates may be higher in protein percentage but may not offer the same health and muscle building benefits as the lower protein whey concentrates.
However, unlike ion exchange proteins, CFM proteins are at least 99% undenatured and retain all of the important peptides. Once hydrolyzed, these undenatured peptides have many benefits over and above whole protein sources.
This can lead to a more rapid delivery into the body, especially when it is needed most (like after weight training workouts). In addition, this increase in BV may increase the release of IGF-1, which, as mentioned earlier, can stimulate muscle growth [Adams 1998]. Studies show that after consuming whey protein, blood amino acids rise and then return to normal approximately 120 minutes after eating. So they compared a slow digesting casein protein to a fast digesting amino acid blend very similar to the composition of casein. The body does this in order to keep blood sugar constant and to fuel the brain and other tissues during sleep.
Since whey protein hydrolysates are the fastest to be digested and absorbed, these are pretty much the choice of protein for post workout recovery nutrition. This would be a great time for a slow protein since the slow proteins release their nutrients over several hours. USA bodybuilding champion, and a member of nationally ranked rugby and track and field teams.
Because ground beef can be high in cholesterol and saturated fat, serve it only occasionally. There are 20 amino acids, and nine of these are essential and the other 11 are classified as non-essential. Basically the fewer calories you are eating, the more protein your body needs to stay in balance or to achieve positive status [Lemon, 1995].
However it only stands to reason that if muscle mass is increased due to long-term high protein intakes, athletes involved in strength and power sports will undoubtedly receive a benefit over time. As I said above, more protein is needed on a low calorie diet anyway; especially when working out. The metabolic increase seen with eating protein is just about double that of eating carbohydrates or fats [Welle et al. In this scenario, the research has demonstrated that when taking in additional protein, there is actually a positive calcium balance and there are no adverse affects on bone calcium content [Hegsted et al.
Also, any company that lists the percentages of each ingredient rather than a non-specific listing of the ingredients is probably a bit more honest about what they are giving you. But the consumption of lean meat seems to have many benefits, especially for weight trainers. The processing of milk can be done in several ways in order to separate out the casein and whey from the lactose, fat and other milk components. Also, the calcium content of CFM protein is high and this is an important consideration with high protein diets. Finally, studies have even shown that hydrolysates do not stimulate the release of the catabolic hormone cortisol whereas whole intact proteins do stimulate this catabolic hormone [Slag et al. Although this does stimulate protein synthesis, it has no impact on slowing protein breakdown.
Then they compared a fast digesting whey protein to a modified whey protein that had a slower digestion rate. In fact, the studies we discussed above showed that even after 7 hours, the subjects were still in a positive protein balance and still had a slow delivery of nutrients [Boirie et al.
High levels of blood or muscle protein don't immediately contribute to the energy needs of exercise modes. During overeating in an attempt to gain muscle, although higher protein intake may not be needed for positive nitrogen status, it's likely better to eat excess protein rather than carbohydrates or fats.
Glucagon also does a nice job of decreasing the enzymes responsible for making fats and building up the fat stores in the liver and in the fat cells [Girard et al.
And, during overfeeding, it may lead to a smaller increase in fat mass relative to lean mass gains. Since IGF-1 can regulate the muscle growth [Adams 1998], I believe that a high protein intake may assist in muscular development. Mainstays of the diet should be protein sources like lean beef, eggs, low fat cheese, milk, fish, and chicken. Finally, if you ask, any good company will provide you with a certificate of analysis (COA) from the manufacturer of the protein itself telling you what the ingredients are [Alex Rogers.
Regardless of the protein intake, vegetarians did not improve to the same degree that meat-eating trainees did. At this time, the best thing you can do for your body is to consume a relatively quick digesting protein source.
The results of these studies have demonstrated that both endurance and strength athletes often require more than double the protein of the average sedentary person (see Figure 1)]. Since overeating leads to both some muscle and some fat gain, eating more calories as protein may lead to more lean weight and smaller gains in fat weight. Since exercise is known to increase bone mass, a high protein diet coupled with exercise training leads to a net increase in bone mass despite any potential losses in calcium.
From all the data, it is clear that the addition of meat protein to a vegetarian diet can increase the gains in muscle and losses in fat seen with weight training. One nice way to accomplish this would be to drink a small whey protein or hydrolysate shake immediately upon waking.
On the other hand, non-essential amino acids can be produced by the body from the essential ones. However, maybe this was due to the short duration of the study rather than the inability of higher protein to increase muscle mass.
Since vegetarian proteins (besides egg and dairy) may be deficient in certain essential amino acids, this may prevent muscle gain even when the total calculated protein intake seems adequate.
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