body
Workout Efficiency Increase
Workout Efficiency Increase refers to improved performance during an exercise session or test. A person may be able to produce more exercise output, such as power, during a given task.
Explore the Workout Efficiency Increase effect and its place among body-related topics.
These are research findings, not promises. Most options have little evidence, and results differ from person to person.
What may help
None of these options has good evidence yet. Best evidence first.
1 option:1 not enough evidence
Strength TrainingpracticeNot enough evidence
Too few or too small studies to know if it works.
The one study found a benefit. Strongest study: a randomized controlled trial.
In one trial of 20 people, the VB_10% condition involved fewer repetitions and lower total training volume than the STD condition. The available finding reports fewer than 10 repetitions for squats, deadlifts, split squats and hip thrusts.
Open the Strength Training page
The expert view shows every study, dose protocol and source.
What may help
Linked to improving it1 listedStart here
The best we have, but the evidence is still weak
- →PracticesStrength TrainingCertaintyLowSourceClinical1 other source
In one trial of 20 people, the VB_10% condition involved fewer repetitions and lower total training volume than the STD condition. The available finding reports fewer than 10 repetitions for squats, deadlifts, split squats and hip thrusts.
Who was studied
- Healthy people
Open Strength TrainingStudy result
significantly fewer than 10 squats (7.43 ± 0.57; p < 0.001), deadlifts (7.25 ± 0.52; p < 0.001), split squats (7.12 ± 0.61; p < 0.001), and hip thrusts (7.33 ± 0.19; p < 0.001) were performed in the VB_10%; total training volume was significantly lower in VB_10% (18,193.2 ± 3,597.0 kg) vs STD (22,61
How to read the evidence
Evidence tier — overall strength of the evidence for the whole compound
- StrongWell established — backed by strong, consistent human research.
- ModerateSome genuine support, but mostly from small or lower-quality studies. Promising, not proven.
- PreliminaryEarly-stage evidence — a promising hypothesis, not an established effect yet.
- LimitedVery limited evidence — treat this as a hypothesis, not proof.
- InsufficientNot enough good evidence to draw conclusions yet.
Certainty — how sure we can be that the effect is real
- Very highVery sure — strong, consistent evidence
- HighFairly sure — consistent evidence from good studies
- MediumModerately sure — new studies could change this
- LowNot sure — little or mixed evidence
- Very lowVery unsure — almost no usable evidence
Source — where the data comes from
- Meta-analysisPooled analysis of many trials — the strongest evidence
- RCTRandomized controlled trial — a strong human study design
- ClinicalA human clinical study
- Reference knowledgeFrom general health-science or pharmacology references, not a study of this exact claim
- Animal researchStudied in animals, not humans
- Community reportsAggregated user reports — anecdotal signal, not evidence
- TheoreticalMechanism-based reasoning, not yet tested
Study grade — quality of each underlying study (A best, D weakest)
- AHigh-quality — strong, consistent human trials
- BGood — solid evidence with some limitations
- CModerate — limited, small, or mixed-quality studies
- DWeak — preliminary, indirect, or animal-only
Confidence — how strongly the sources back a finding
A 0–100 score from study quality and agreement
Most supplement evidence is graded C–D. Read it as preliminary signal, not proof.
Full write-up
What is it
Workout Efficiency Increase refers to improved performance during an exercise session or test. A person may be able to produce more exercise output, such as power, during a given task. This outcome concerns how effectively the workout is performed; it should not be confused with muscle growth, weight loss, or a permanent change in fitness, which are separate outcomes.
How interventions help
Interventions studied for workout efficiency act on different time scales and performance measures. Some were tested around a single exercise session: Caffeine at 300 mg, Beetroot Extract at 8.3-16.4 mmol nitrate, Sodium Bicarbonate at 15g, and Taurine at 6 g were assessed acutely, with effects measured during that exercise rather than after a prolonged supplementation period. These studies reported changes in measures such as power output, exercise work, or time-based performance, but they do not establish that an effect continues after stopping.
Other approaches were evaluated over repeated use or alongside training. Creatine studies lasted 4 days to 10 weeks, Whey Protein was studied over 3 weeks, and longer training protocols included Astaxanthin for 1 month supplementation plus 12 weeks endurance training and Collagen for 15 weeks. These designs examine changes that develop across a training period rather than an immediate response to one dose. Panax Ginseng was assessed over 14 days, while Iron was studied over 42 days and CBD (Cannabidiol) over 8 weeks.
The outcomes also differ: findings included increased power, reduced calculated energy cost, lower perceived exertion, and improved exercise efficiency. Some studies tested combinations rather than a single intervention, such as Ginger with green tea extract and Omega-3 with Whey Protein, so those results do not isolate the individual ingredient. The participants’ health status was not specified across the intervention records, limiting conclusions about who these findings apply to.
Choosing guidance
For a single-session or rapid-use approach, options studied with acute protocols may suit readers who want an effect around one exercise test rather than a longer supplementation period. Caffeine and Beetroot Extract were studied with immediate onset, while Sodium Bicarbonate and Taurine were examined after an acute single dose. These options are not interchangeable: their studied amounts and exercise settings differed, so results from one should not be assumed to apply to the others.
Creatine may suit someone willing to follow a regimen over days or weeks, whereas Collagen, Panax Ginseng, CBD (Cannabidiol), Iron, and other multi-week options require a longer commitment before judging the outcome. Dose burden is difficult to compare because some protocols used fixed daily amounts, some varied across trials, and some did not report a consistent amount. L-Carnitine is the clearest example of an option studied with daily use over an extended period.
Human evidence can help narrow the choices, but it is not present consistently across all options, and the health status of study participants was not specified. Rhodiola Rosea and Citrulline also have conflicting findings, making them less suitable for readers seeking consistent results. Ashwagandha illustrates another limitation: improvement within a supplemented group does not necessarily show a difference from placebo. Overall, choose based on whether the priority is immediate versus sustained use, a clearly described human study base, and willingness to accept uncertainty when findings disagree.