RipFACTOR: The Muscle Accelerator Ingredient from PLT Health

Increases Muscle Strength and Growth, Endurance, and Androgen Activity in Young Male Volunteers (2023)

RipFACTOR® is an award-winning clinically-studied, concentrated herbal formula to accelerate muscle growth. The development of this formula involved screening over 2,000 botanicals for their ability to promote optimal strength, endurance, and muscle gains.

This study randomized 40 male participants between the ages of 18 and forty to receive either a placebo, or 650 milligrams of RipFACTOR, every day for 56 days.^[10]

Importantly, these were trained subjects – part of the inclusion criteria for this study was that participants needed to lift at least 3-4 hours per week, 4 times per week, for 6 months.^[10] This is important because it’s harder for a sports nutrition supplement to show efficacy in trained subjects than it is in untrained subjects, so this design choice immediately lends greater credence to the study results.

It’s also important to note that these subjects were healthy. With an average age of about 23, and an average BMI of about 24,^[10] these were fit young men in the prime of their lives.^[10] Again, this is a population that’s generally tough to benefit with supplementation – since they’re at their absolute physical peak, any demonstrated efficacy is truly increasing health and function above baseline.

They were screened for disqualifying medical conditions that could potentially confound the study results, like abnormal liver panels or a positive HIV diagnosis, and given instruction to avoid ergogenic aids while maintaining their normal diets.^[10]

The study design.^[10]

The study had participants visit the lab for 5 different visits:

1. Screening visit
2. Randomization/baseline visit
3. Day 14
4. Day 28
5. Day 56

Physical performance tests were conducted on visits 2 through 5, while blood draws were performed only on visits 1, 2, and 5.^[10]

The RipFACTOR Benefits, as shown from PLT Health from the earlier 2023 study.^[10]

The most notable thing about this study is probably the design of the training regimen the subjects followed – it consisted of 4 workouts per week, and included over 17 different chest-and-shoulder, back, leg, and arm exercises, divided up in the traditional bro split. That is, one of these weekly training sessions was dedicated to chest and shoulders, another to back, and so on.

The sessions themselves were carefully designed based on each subject’s individual 1RMs –

1. First they warmed up with 2 sets of 8-10 repetitions at 50% 1RM.
2. Then they performed 2-3 sets of 10 at 70% 1RM, with 2 minutes of rest between sets.
3. Finally, weight was incrementally added to the bar until it reached 90% 1RM.

The exceptions were on the assessment visit days – that is, visits 2 (baseline), 3 (day 14), 4 (day 28), and 5 (day 56). On those days, the participants only performed physical assessment exercises consisting of bench press, leg press, cable pulldowns, handgrip strength, and a treadmill test.

The study also tracked the following physiological biomarkers:

• Free testosterone
• Cortisol
• Dihydrotestosterone (DHT)
• Creatine kinase (CK), a measure of muscle damage

The RipFACTOR group (LI12542F6) absolutely blew the placebo group out of the water on all strength-related assessments.^[10]

The randomization in this study was clearly pretty good, since bench 1RM, leg press 1RM, and handgrip strength was roughly equal between the groups at the baseline visit.

But as the study went on, the RipFACTOR group (labeled LI12542F6 in the study) absolutely demolished the placebo group.

Usually, when we do really detailed coverage of a study like this, we find that some results achieve statistical significance while others don’t, and we like to highlight the ones that do. But in this case, all the inter-group differences achieved statistical significance (marked in the the table by a # superscript).^[10]

Although both groups gained significant amounts of strength on all three assessments, the RipFACTOR group gained over 500% more strength than the placebo group on the bench press and leg press assessments.^[10] Given the placebo group’s significant strength gains, RipFACTOR’s effects are exceptionally impressive.

Even more impressive was the grip strength result. As anyone who’s been in a gym can tell you, grip strength is notoriously difficult to train – you have to fight really hard for even single-digit percentage point increases. Yet, incredibly, the RipFACTOR group gained 30% more handgrip strength than the placebo group during the 56-day study period.^[10]

RipFACTOR’s ability to increase grip strength is probably related to its significantly androgenic effect.^[10]

Although handgrip strength doesn’t respond quickly to training, exercise physiologists have long known that testosterone status can profoundly affect grip strength^[11] – so if we’re seeing a boost in grip strength, we should expect to see an improvement in overall androgen status. And that’s exactly what the RipFACTOR study found.

While the placebo group’s serum level of free testosterone, the most important and biologically active testosterone biomarker, dropped slightly over the course of the study period, the RipFACTOR group’s free T level went up by about 17%.^[10] This is another one of those metrics that’s really tough to change, so the fact that RipFACTOR could cause such a significant increase is quite impressive.

Furthermore, while serum levels of the stress hormone cortisol dropped in both groups, it dropped in the RipFACTOR group a lot more. It dropped only 3.5% in the placebo group, while decreasing by 21% in the RipFACTOR group.^[10]

RipFACTOR increased endurance as well as strength.^[10]

This study also measured athletic endurance in two different ways:

1. Number of cable pull-down repetitions to failure at 80% 1RM
2. Time to exhaustion on a treadmill test with a 2% increase in incline every 2 minutes

And on both metrics, the RipFACTOR group out-gained the placebo group – they gained 96% more endurance on the cable pulldowns, and 107% more endurance on the treadmill test.^[10]

RipFACTOR increased bicep circumference in both arms, as well as lean body mass, more than placebo – and the RipFACTOR group also lost more fat than the placebo group.^[10]

Since the study shows that RipFACTOR increased strength, endurance, and androgen activity, it’s no surprise that some beneficial effects showed up in body composition too. The RipFACTOR group experienced a roughly 3-4x greater increase in bicep circumference, which is very cool and usually indicative of muscle growth.^[10]

The really big one, though, was overall lean body mass – the RipFACTOR group gained 1.44 kg of lean mass on average, while the placebo group hardly gained anything at all. Moreover, the RipFACTOR group lost roughly 5x as much fat as the placebo group.^[10]

This is no surprise as, again, we already know RipFACTOR significantly increased free T. And as the authors of the study point out, free T has a profound effect on muscle protein synthesis activity via its binding to the androgen receptor.^[10]

Increases Muscular Strength, Endurance, and Testosterone, While Decreasing Cortisol (2024)

Then, just one year after the study we discussed above, we got another, very similar study published this year (2024). Although it was conducted by a different team of researchers, this second study was so similar in design and concept that you should think of it as a followup study.

Primeval Labs Primavar was updated in 2023 to provide 325mg RipFACTOR per capsule

This was another randomized, double-blind, placebo-controlled study, but the sample size was much larger. This study used 120 men aged 19 to 29, who were randomly assigned to one of four treatment conditions, which they adhered to for the 56-day study period:

1. Active 1 (A1) – 425mg RipFACTOR per day
2. Active 2 (A2) – 850mg RipFACTOR per day
3. Placebo 1 (P1) – placebo
4. Placebo 2 (P2) – placebo but twice the sets

For the duration of the study period, all the groups performed an identical resistance training program – except for placebo 2 group (P2), which did twice the number of sets per session as A1, A2, and P1.^[1]

While only 99 of the 120 originally-enrolled participants actually completed the study, 99 participants is a huge study by supplement science standards – it’s still more than twice as big as the sample size in the previously-discussed study, for example.

Results: RipFACTOR Significantly Increases Strength (1RM Bench, 1RM Leg Extension, and Total Muscle Strength)

The RipFACTOR groups, A1 and A2, experienced much bigger improvements on 1-RM bench press, 1-RM leg extension, and total muscle strength – even though their body weight remained unchanged.^[1]

The RipFACTOR-supplemented groups saw 10-15% greater improvements in strength than the placebo groups – and without a significant difference in body weight!^[1] This is quite remarkable and, in our opinion, strongly implies that RipFACTOR is supporting performance and neuromuscular adaptation at the cellular-metabolic level, as opposed to just promoting lean mass gains.

Although all the groups gained overall strength, the RipFACTOR groups gained a lot more – compare the 13.8% gain in P1 to the 34.9% increase experienced by A2.^[1]

What’s really remarkable about this data is the extreme statistical significance achieved by some of the observed effects. For example, here are some of the inter-group ANCOVA comparisons:

• A1 vs. P1: on day 56 A1 lifted 10.6 ± 3.0 kg more (p = 0.003)
• A2 vs. P1: on day 56 A2 lifted 13.8 ± 3.0 kg more (p < 0.001)
• A2 vs. P2: on day 56 A2 lifted 9.9 ± 3.1 kg more (p = 0.010)

Not only did the RipFACTOR groups drastically outperform the placebo groups when it came to increasing strength, but look at the p-values – they’re all way below the threshold for statistical significance, which is p = 0.05. These are extremely robust results. It’s essentially impossible for them to have occurred by chance.

RipFACTOR Boosts Endurance (Number of Reps)

RipFACTOR improved not only muscular strength, but also muscular endurance.^[1]

In addition to increasing strength, the study also looked at the participants’ max repetitions on the same lifts. They found that, just as in the 2023 study, RipFACTOR increased the max reps by about 10-15% more than the placebo did.^[1]

Nor were the placebo groups’ gains insignificant – P1 and P2 both roughly doubled the median number of reps they were able to perform on both the bench press and the leg extension – it’s just that RipFACTOR enabled the participants to gain just a little bit more. For example, while A2’s median number of reps went from 6 to 14, the placebo groups only went from 6 to 12 and 7 to 12.^[1]

Increases Free Testosterone and Total Testosterone

Once again, RipFACTOR proved its ability to increase testosterone activity.^[1]

Just like the previous study, this study found that RipFACTOR increased free testosterone – but the effect size was way bigger here. A1’s free T increased by 31%, while A2’s went up a whopping 38%.^[1]

Unlike the other study, this one measured total testosterone as well – and found that it went up by about 15%, which is still a totally awesome effect size for such an important biomarker.^[1] And once again, RipFACTOR decreased cortisol, by about 10%.^[1]

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One interesting difference here is that while cortisol decreased in the RipFACTOR groups, it significantly increased in the placebo groups – suggesting that RipFACTOR is a potent adaptogenic supplement capable of helping the body cope with the rigors of demanding training.

This study is discussed in detail in our article titled “RipFACTOR Boosts Strength, Reps, and Free + Total Testosterone: 2024 Study“.