Improvement after a supplement is not the same as a comparative result
Start with the comparison. A before-and-after change alone cannot isolate the contribution of an ingredient.
Sodium Bicarbonate
Exercise performance
Human studies reported between-group improvement in 2,000-m rowing performance.
combination-ingredient studies · Individual ingredient effects cannot be separated · Human studies · between-group comparison
Publications for this result: 1
Other outcomes and study details
Distinct publications linked to this topic: 20
- Route, form, dose, or population details are incomplete, so the findings cannot be confirmed as directly comparable.
- Combination, formula, or class studies do not isolate this ingredient or establish synergy.
What has been studied?
Distinct human comparison papers: 7
Some studies tested several ingredients together. Those results cannot show this ingredient’s separate effect or establish synergy.
2,000-m rowing performance
- Comparison result:A better result than the comparison group was reported.General population · Combination study
Measurement and study conditions
- Controlled human study
- Randomized trial
- Ingredient combination
- General population
- Primary outcome
- Between-group comparison
- Timepoint: At 28 and 30 days of chronic supplementation with acute post-supplementation tests
- Study comparison: Sodium bicarbonate versus maltodextrin across chronic beta-alanine/placebo conditions; small possibl
exercise tolerance
- Comparison result:A better result than the comparison group was reported.Single ingredient
Measurement and study conditions
- Controlled human study
- Randomized trial
- Single ingredient
- Unspecified population
- Outcome role not specified
- Between-group comparison
- Timepoint: unspecified
- Study comparison: unspecified
Maximal voluntary isometric contraction
Other human research, including observational studies and reviews
- A change was reported, but the comparison could not be confirmed.General population · Single ingredient
Measurement and study conditions
- Controlled human study
- Randomized trial
- Single ingredient
- General population
- Primary outcome
- Timepoint: single dose before match simulation
- Study comparison: sodium bicarbonate versus equimolar sodium chloride placebo
Mean Power
Other human research, including observational studies and reviews
- A change was reported, but the comparison could not be confirmed.Single ingredient
Measurement and study conditions
- Controlled human study
- Randomized trial
- Single ingredient
- Unspecified population
- Outcome role not specified
- Timepoint: unspecified
- Study comparison: unspecified
Other measured outcomes (8)
number of completed throws
- Comparison result:Results were mixed for this outcome.General population · Single ingredient · after 10 days
Measurement and study conditions
- Controlled human study
- Randomized trial
- Single ingredient
- General population
- Secondary outcome
- Between-group comparison
- Timepoint: after 10 days
- Study comparison: Randomized sodium bicarbonate versus placebo trial; reported endpoint results include within-arm cha
performance decrements in WAnT bouts
Other human research, including observational studies and reviews
- A change was reported before and after use. Its cause cannot be isolated.General population · Separable contribution
Measurement and study conditions
- Controlled human study
- Randomized trial
- Separable contribution
- General population
- Primary outcome
- Within-group comparison
- Timepoint: 90 minutes post-ingestion, six WAnT bouts
- Study comparison: sodium bicarbonate + CHO vs placebo + CHO in crossover trial
post-exercise blood ammonia concentration
Other human research, including observational studies and reviews
- A change was reported before and after use. Its cause cannot be isolated.General population · Combination study · 8 weeks
Measurement and study conditions
- Controlled human study
- Randomized trial
- Ingredient combination
- General population
- Biomarker
- Within-group comparison
- Timepoint: 8 weeks
- Study comparison: within-arm pre/post decrease in both combination arms; no between-arm contrast for this endpoint
RAST total time
- Comparison result:No clear difference from the comparison group was found.General population · Single ingredient · 90 minutes before RAST
Measurement and study conditions
- Controlled human study
- Randomized trial
- Single ingredient
- General population
- Primary outcome
- Between-group comparison
- Timepoint: 90 minutes before RAST
- Study comparison: acute sodium bicarbonate versus sodium chloride placebo in crossover trial
rowing performance
- Comparison result:A better result than the comparison group was reported.Single ingredient
Measurement and study conditions
- Controlled human study
- Randomized trial
- Single ingredient
- Unspecified population
- Outcome role not specified
- Between-group comparison
- Timepoint: unspecified
- Study comparison: unspecified
SPPB
- Comparison result:No clear difference from the comparison group was found.Patient group · Single ingredient · 12 months.
Measurement and study conditions
- Controlled human study
- Randomized trial
- Single ingredient
- Patient group
- Primary outcome
- Between-group comparison
- Timepoint: 12 months.
- Study comparison: Adjusted between-group oral sodium bicarbonate versus placebo comparison, analyzed by intention to t
Squat Jump Performance
Other human research, including observational studies and reviews
- A change was reported, but the comparison could not be confirmed.Single ingredient
Measurement and study conditions
- Controlled human study
- Randomized trial
- Single ingredient
- Unspecified population
- Outcome role not specified
- Timepoint: unspecified
- Study comparison: unspecified
Time-to-exhaustion
- Comparison result:No clear difference from the comparison group was found.Single ingredient
Measurement and study conditions
- Controlled human study
- Randomized trial
- Single ingredient
- Unspecified population
- Outcome role not specified
- Between-group comparison
- Timepoint: unspecified
- Study comparison: unspecified
This result is held for interpretation. That does not mean research found no effect.
Outcome groups needing additional review (2)
- exercise effect size · Distinct papers needing additional review: 1Direction unclear: 1
- performance in muscular endurance activities · Distinct papers needing additional review: 1Evidence criteria check: 1
One paper can appear under multiple measured outcomes or review reasons, so these counts should not be added together.
Research topics to explore
Research topics to explore
Review findings reported in each research area.
Topics with more linked papers appear first.
- View selected result
Exercise performance
Related papers 20 · human comparison papers 7
- View results
Glucose and metabolic health
Related papers 2 · comparison findings need further review
- Metabolic alkalosis · Comparison details unconfirmed
Data coverage and detailed study classifications
Paper counts are separated by research topic below. One paper may contribute to multiple findings.
Analysis status: Public-ready
Ingredient analysis date:
How the grade was determined: B
The 61.5 evidence score includes 2 independent human studies and 2 clinical studies in the representative benefit area. The B tier remains conservative because of limited repetition across independent human clinical studies, too few clinical findings with an explicit effect direction.
The grade is based mainly on the research area with the most evidence. It does not mean the same result was found in other areas.
Papers linked to this ingredient overall: 62
Papers linked to this topic 20 · distinct papers 20 · papers with a confirmed human comparison 7 · papers needing additional review 8
Ingredient-wide papers, topic-linked papers, and sources in outcome groups use different scopes. Adding source counts may count the same paper more than once.
- 2,000-m rowing performance: Sources represented in this measurement group: 1 · Distinct papers with human comparisons for this outcome: 1
- exercise effect size: Sources represented in this measurement group: 1 · Distinct papers with human comparisons for this outcome: 0
- exercise tolerance: Sources represented in this measurement group: 1 · Distinct papers with human comparisons for this outcome: 1
- Maximal voluntary isometric contraction: Sources represented in this measurement group: 1 · Distinct papers with human comparisons for this outcome: 0
- Mean Power: Sources represented in this measurement group: 1 · Distinct papers with human comparisons for this outcome: 0
- number of completed throws: Sources represented in this measurement group: 1 · Distinct papers with human comparisons for this outcome: 1
- performance decrements in WAnT bouts: Sources represented in this measurement group: 1 · Distinct papers with human comparisons for this outcome: 0
- performance in muscular endurance activities: Sources represented in this measurement group: 1 · Distinct papers with human comparisons for this outcome: 0
- post-exercise blood ammonia concentration: Sources represented in this measurement group: 1 · Distinct papers with human comparisons for this outcome: 0
- RAST total time: Sources represented in this measurement group: 1 · Distinct papers with human comparisons for this outcome: 1
- rowing performance: Sources represented in this measurement group: 1 · Distinct papers with human comparisons for this outcome: 1
- SPPB: Sources represented in this measurement group: 1 · Distinct papers with human comparisons for this outcome: 1
- Squat Jump Performance: Sources represented in this measurement group: 1 · Distinct papers with human comparisons for this outcome: 0
- Time-to-exhaustion: Sources represented in this measurement group: 1 · Distinct papers with human comparisons for this outcome: 1
Exercise performance
What the research found
number of completed throws
Results for this measurement were mixed; no consistent conclusion can be drawn.
Controlled study in people · Single ingredient · General population
Between-group comparison
Analysis coverage and paper counts
1 paper · 1 measured outcome
Direction counts are distinct papers within each row. Outcome contributions count endpoint results, so one paper may contribute more than once.
performance decrements in WAnT bouts
A change was reported before and after use. Its cause cannot be isolated.
Controlled study in people · Separable contribution · General population
Within-group comparison
Analysis coverage and paper counts
1 paper · 1 measured outcome
Direction counts are distinct papers within each row. Outcome contributions count endpoint results, so one paper may contribute more than once.
RAST total time
No clear difference in this measurement was found between the compared groups.
Controlled study in people · Single ingredient · General population
Between-group comparison
Analysis coverage and paper counts
1 paper · 1 measured outcome
Direction counts are distinct papers within each row. Outcome contributions count endpoint results, so one paper may contribute more than once.
SPPB
No clear difference in this measurement was found between the compared groups.
Controlled study in people · Single ingredient · Patient group
Between-group comparison
Analysis coverage and paper counts
1 paper · 1 measured outcome
Direction counts are distinct papers within each row. Outcome contributions count endpoint results, so one paper may contribute more than once.
Time-to-exhaustion
No clear difference in this measurement was found between the compared groups.
Controlled study in people · Single ingredient · Unspecified population
Between-group comparison
Analysis coverage and paper counts
1 paper · 1 measured outcome
Direction counts are distinct papers within each row. Outcome contributions count endpoint results, so one paper may contribute more than once.
2,000-m rowing performance
The study reported improvement in this measurement.
Controlled study in people · Ingredient combination · General population
Several ingredients were used together. This does not establish the effect of this ingredient alone or synergy.
Between-group comparison
Analysis coverage and paper counts
1 paper · 1 measured outcome
Direction counts are distinct papers within each row. Outcome contributions count endpoint results, so one paper may contribute more than once.
exercise tolerance
The study reported improvement in this measurement.
Controlled study in people · Single ingredient · Unspecified population
Between-group comparison
Analysis coverage and paper counts
1 paper · 1 measured outcome
Direction counts are distinct papers within each row. Outcome contributions count endpoint results, so one paper may contribute more than once.
post-exercise blood ammonia concentration
A change was reported before and after use. Its cause cannot be isolated.
Controlled study in people · Ingredient combination · General population
Several ingredients were used together. This does not establish the effect of this ingredient alone or synergy.
Within-group comparison
Analysis coverage and paper counts
1 paper · 1 measured outcome
Direction counts are distinct papers within each row. Outcome contributions count endpoint results, so one paper may contribute more than once.
rowing performance
The study reported improvement in this measurement.
Controlled study in people · Single ingredient · Unspecified population
Between-group comparison
Analysis coverage and paper counts
1 paper · 1 measured outcome
Direction counts are distinct papers within each row. Outcome contributions count endpoint results, so one paper may contribute more than once.
Maximal voluntary isometric contraction
A change was reported, but the comparison could not be confirmed.
Controlled study in people · Single ingredient · General population
Analysis coverage and paper counts
1 paper · 1 measured outcome
Direction counts are distinct papers within each row. Outcome contributions count endpoint results, so one paper may contribute more than once.
Mean Power
A change was reported, but the comparison could not be confirmed.
Controlled study in people · Single ingredient · Unspecified population
Analysis coverage and paper counts
1 paper · 1 measured outcome
Direction counts are distinct papers within each row. Outcome contributions count endpoint results, so one paper may contribute more than once.
Squat Jump Performance
A change was reported, but the comparison could not be confirmed.
Controlled study in people · Single ingredient · Unspecified population
Analysis coverage and paper counts
1 paper · 1 measured outcome
Direction counts are distinct papers within each row. Outcome contributions count endpoint results, so one paper may contribute more than once.
exercise effect size
The study needs further checking before its result can be interpreted.
Meta-analysis · Single ingredient · General population
The comparison could not be confirmed.
Analysis coverage and paper counts
1 paper · 1 measured outcome
1 papers held from direction counts
Review overlap with primary papers is unknown; counts stay separate.
Direction counts are distinct papers within each row. Outcome contributions count endpoint results, so one paper may contribute more than once.
performance in muscular endurance activities
The study needs further checking before its result can be interpreted.
Review · Single ingredient · General population
The comparison could not be confirmed.
Analysis coverage and paper counts
1 paper · 1 measured outcome
1 papers held from direction counts
Review overlap with primary papers is unknown; counts stay separate.
Direction counts are distinct papers within each row. Outcome contributions count endpoint results, so one paper may contribute more than once.
Unspecified measured outcome
The study needs further checking before its result can be interpreted.
Controlled study in people · Single ingredient · Unspecified population
Between-group comparison
Analysis coverage and paper counts
3 papers · 3 measured outcomes
3 papers held from direction counts
Direction counts are distinct papers within each row. Outcome contributions count endpoint results, so one paper may contribute more than once.
Unspecified measured outcome
The study needs further checking before its result can be interpreted.
Controlled study in people · Single ingredient · Unspecified population
The comparison could not be confirmed.
Analysis coverage and paper counts
3 papers · 3 measured outcomes
3 papers held from direction counts
Direction counts are distinct papers within each row. Outcome contributions count endpoint results, so one paper may contribute more than once.
Glucose and metabolic health
What the research found
Metabolic alkalosis
A change was reported, but the comparison could not be confirmed.
Review · Single ingredient · Unspecified population
Analysis coverage and paper counts
1 paper · 1 measured outcome
Review overlap with primary papers is unknown; counts stay separate.
Direction counts are distinct papers within each row. Outcome contributions count endpoint results, so one paper may contribute more than once.
Metabolic alkalosis
The study needs further checking before its result can be interpreted.
Other evidence · Single ingredient · Unspecified population
The comparison could not be confirmed.
Analysis coverage and paper counts
1 paper · 1 measured outcome
1 papers held from direction counts
Direction counts are distinct papers within each row. Outcome contributions count endpoint results, so one paper may contribute more than once.
How to read research findings
How should I read research findings?
Research guidesNo clear difference and an uninterpretable result are different
A reported null comparison contains a result. An abstract without an interpretable comparison leaves a question unresolved.
Paper counts and study counts are different
Count original research separately from research that reanalyzes it. Publication volume is neither replication nor a quality rating.
Side effects and combination findings
Findings from this ingredient alone are shown separately from those involving another supplement or medication.
Caution findings
2
Findings from individual and combined use, plus reviewed cautions
Key precautions
No reviewed caution rules are available yet. Reported caution findings are shown below.
Review 1 combination findings and 0 findings that outperformed an ingredient alone.
These findings were reported in studies. They do not predict an individual's experience.
Findings to review with care
Side effects reported for the ingredient alone are separated from findings involving another supplement or medication.
Side effects reported with this ingredient alone
Symptoms or adverse events reported in studies without another active ingredient.
Metabolic alkalosis1 papers
Sodium bicarbonate ingestion can cause life‑threatening metabolic alkalosis, hypernatremia, and gastric rupture, with high mortality in acute massive ingestion.Human studies · Systematic reviewRepeated sprint ability1 papers
In a small RCT of 8 men, sodium bicarbonate ingestion 0.3 g/kg at 60–180 min before exercise did not improve repeated sprint performance but increased gastrointestinal discomfort at earlier time points.Human studies · Randomized controlled trialReported improvements with combinations
Combination findings are grouped by how the study compared them. This is not a recommendation to combine ingredients.
Combinations with reported improvement
The combination showed improvement, but each ingredient's contribution is unclear.
크레아틴Combined creatine and sodium bicarbonate supplementation significantly improved 30-m sprint and arrowhead agility performance in elite soccer players compared to placebo.