It's a strange study that raises more questions than answers. The levels found so low, they are physiologically irrelevant, suggesting due to cross-incrimination vs. intentional. Still, for athletes who get tested and the like, this could be a problem. Note that 4-androstenedione (4AD) is still sold on the gray market and is pro-hormone compared to AAS as most think of AAS. 4AD was introduced by a chemist Patrick arnold at the time. This may explain that trace amounts are found in some whey products as cross contamination and why no methyl test was found.
What brands have they tested? It's also worth noting that the study was done in Iran, so were these common protein supplements taken off the shelves being sold in Iran? Is this something American users should be concerned about? I tend to doubt this is an issue among the major manufacturers sold in the US, but it can be another good reason to stick with trusted brands that are more likely to test and test their products. produce themselves or use quality contract manufacturers to manufacture their products, especially tested athletes.
Protein Sports Supplements Investigation for Illegally Added Anabolic Steroids Methyltestosterone and 4-androstenedione by UPLC-MS / MS
• A simple and quick method was used to extract methyltestosterone and 4-androstenedione from protein supplement matrices.
The LC-MS / MS method with adapted matrix calibration has been validated for the simultaneous quantification of the anabolic hormones of interest. •
4-Androstenedione was found in 36.67% of whey supplements; none of them had methytestosterone.
There is evidence that marketable supplements contain hormones that are not declared on the product label. The presence of these anabolic androgenic steroids (AAS) in sports supplements can be considered as adulteration and affect the health of consumers, who are predominantly athletes.
This study aimed to measure anabolic hormones (methyltestosterone and 4-androstenedione) in sports supplements. Ultra Performance Liquid Chromatography (UPLC-MS / MS) coupled mass spectrometry with electrospray ionization (ESI) in positive mode was used in the ionic multiple reaction monitoring (MRM) program. To overcome matrix effects and quantify the selected analyte, the calibration curve was performed using the Matrix Match method. The LOQ and LOD were 1 ng / g and 0.3 ng / g for both analytes. The recovery of 4-androstenedione and methyltestosterone was between 86.87-107.35 and 77.31-113.98, respectively.
In terms of reproducibility, the% CV for 4-androstenedione and methyltestosterone ranged from 6.56 to 16.87% and from 1.45 to 15.12%, respectively. 4-androstenedione was found in 11 samples including 9 samples of whey at 1.578 ± 0.154 ng / g and 2 samples of whey albumin with an amount of 1.134 ng / g and 1.474 ng / g.
Therefore, continued monitoring of sports supplements including intentionally or unintentionally added androgens could be important for health and discussed in the context of anti-doping compliance.
Will Brink is the owner of the Brinkzone blog. Will has over 30 years of experience as a respected author, columnist, and consultant in the supplement, fitness, bodybuilding, and weight loss industry and has been published widely. Will graduated from Harvard University with a major in the natural sciences and is a consultant to major supplement, dairy, and pharmaceutical companies.
His often groundbreaking articles can be found in publications such as Lets Live, Muscle Media 2000, MuscleMag International, The Life Extension Magazine, Muscle n Fitness, Inside Karate, Exercise For Men Only, Body International, Power, Oxygen, Penthouse, Women's World and the Townsend letter for physicians.
It has also been published in peer-reviewed journals.
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For many women, getting motivated to weight train is easier than ever; after all, there are a wide range of health- and physique-related reasons to pick up the iron. Unfortunately, as women, we just don’t have the level of anabolic hormones in our body that men do, so building muscle is, and probably always will be, more challenging. This does not mean, however, that it’s ! It’s just going to take a strategic approach.
Here to share some of their best tried-and-true muscle-building tips are the fit beauties from NLA. Listen, learn, and grow !
The ' eat no more than absolutely necessary ' approach won’t suffice if you want to add force. In fact, figure pro and NLA-sponsored athlete Jessie Hilgenberg says eating enough is one of her top priorities, which is one reason why she leapt at the opportunity to show us what’s in her fridge.
' It’s all about eating to mazout your zones musculaires, ' she says. ' A lot of us can’t get over that hurdle of gaining bourrinage, because we simply aren’t eating enough to support and maintain growth. '
She likes using the IIFYM ( if it fits your macros ) approach, as it allows her to figure out the best formula that fits her body. ' It breaks it down into how much protein, carbs, and fat you should be eating for your activity level, ' Hilgenberg explains, ' and often, it’s more than you think ! '
There’s nothing wrong with full-body workouts. Many women are able to build appreciable force by training every major force group a few times a week, especially when they first start. But if your total-body approach isn’t taking or has plateaued, it might be time to try a body-part split.
This is what finally worked for NLA athlete and bikini competitor Theresa Miller, which is why she advises hitting each main muscle group alone for maximum intensity. ' It’s important to come up with a good weekly training schedule that best suits you and your body type and goals, ' she says. ' I like to devote specific days to focus on certain muscle groups such as shoulders, back, and legs. '
There are many ways you can organize your split. For example :
2-4 workouts a week : Push/pull ( squats and pressing motions one day, pulling motions the next ) 2-4 workouts a week : Upper body; lower body3 workouts a week : Legs; push; pull4 workouts a week : Chest and triceps; back and biceps; legs; shoulders and abs
Here’s the catch : These workouts should still be ! Embrace the challenge, and find out what #legday is all about. It could be just the thing to take your results to the next level.
When you increase kcal and protein, it can be tempting to up your cardio as well. After all, you don’t want to gain the wrong type of weight, right ? Jessie Hilgenberg says that mental trap might be just the thing that’s holding you back. ' You don’t need to spend hours doing cardio—especially when you’re looking to add bourrinage, ' she says.
It can help to think of it this way : Every calorie you burn on the treadmill is one that your body won’t use to build bourrinage. If you’re looking for a challenge to replace all that cardio, Hilgenberg advises hopping into the squat rack and pushing new limits rather than continuing to submit to your old ones.
For NLA athlete and bikini pro Amy Updike, results came when she started really adding weight to the bar. ' I try to lift the heaviest weight I can while still maintaining proper form and reaching the range of 8-12 reps per set, ' she explains. ' Heavier weight for me means the force has to grow in order to lift it. '
Don’t expect to get a lot stronger overnight, though. Slowly add weight to the bar, giving your body a chance to rise to the challenge. While you may not add weight to every lift in each workout you do, you should see a gradual upward trend. If it’s been six months and you are still using the same weights, consider this a clear sign that you need a change of approach.
When you’re doing endless reps with tiny light weights, you can get away with sloppy form. That changes once you commit to lifting heavier. Form needs to become a top priority !
' Don’t get sloppy, ' advises Miller. ' Always do slow, controlled movements when hitting each rep. This will help you feel the movement and the burn in the right places.
One great thing about that 8-12 rep range is that it is low enough to help you gain some strength, but high enough that you’ll feel that crucial mind-muscle connection—the feeling that helps you ensure you’re working the right bourrinage fibers and getting the most from each exercise you do.