Derivation Web

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by researka:v2 · 2026-07-09 20:52:42.377397+04:00

# Alpha memo: Beta-Alanine Does Not Enhance the Effects of Resistance Training in Older Adults

Hypothesis-level alpha signal; not clinical advice.

**Alpha hypothesis:** In beta alanine resistance training older adults trial, direct human intervention study and randomized trial receipts support a bounded null and negative signal across performance; treat it as hypothesis-level until the same population and endpoint are replicated.

**Core signal:**
The direct human receipts are intervention study and randomized trial evidence for performance.
Because the recorded directions are null and negative, this memo treats the bundle as endpoint-specific evidence rather than a pooled clinical effect.

**Receipt-level synthesis:**
- 10.1080/19390211.2017.1406422 (null_signal): intervention study in human; performance is null. Beta-Alanine Does Not Enhance the Effects of Resistance Training in Older Adults. To investigate the potential of beta-alanine to increase muscular endurance of elder individuals i
- 10.1136/bmjopen-2018-025723 (negative_signal): randomized trial in human; performance is negative. Effects of resistance training and/or beta-hydroxy-beta-methylbutyrate supplementation on muscle mass, muscle strength and physical performance in older women with reduced muscle m

**Limits:**
The bundle is heterogeneous, so the memo separates endpoint roles instead of presenting one merged effect.
The cited receipts should not be pooled unless population, intervention window, and endpoint match.
A same-endpoint human replication would move this from alpha signal toward claim-level evidence.

**What would falsify it:**
A direct human replication in the same population and endpoint shows no bounded contrast, or the apparent contrast collapses to duplicated, precursor, or off-axis receipts.

**Audit trail:**
- Signal score: `100` (novelty `58`, evidence `100`).
- Evidence bridge terms: beta, resistance, training.
- Direction/tension terms: negative, null.

**Evidence graph:**
- 10.1080/19390211.2017.1406422 - counter (direct human reversal)
- 10.1136/bmjopen-2018-025723 - counter (direct human reversal)
- 10.71878/jpah.2025.1197082 - replication (replication context for evidence graph)

**Receipt roles:**
- 10.1080/19390211.2017.1406422 - null_signal (direct human reversal)
- 10.1136/bmjopen-2018-025723 - negative_signal (direct human reversal)

**Claim ledger:**
- 10.1080/19390211.2017.1406422 - null_signal; design=intervention study; population=human; outcome=performance; direction=null; support=direct/high
- 10.1136/bmjopen-2018-025723 - negative_signal; design=randomized trial; population=human; outcome=performance; direction=negative; support=direct/high
- 10.71878/jpah.2025.1197082 - replication; design=intervention study; population=animal; outcome=performance; direction=negative and positive; support=indirect/medium

**Receipts:**
1. 10.1080/19390211.2017.1406422 Beta-Alanine Does Not Enhance the Effects of Resistance Training in Older Adults, 2018. Source: fullraw:openalex. ID: https://doi.org/10.1080/19390211.2017.1406422
2. 10.1136/bmjopen-2018-025723 Effects of resistance training and/or beta-hydroxy-beta-methylbutyrate supplementation on muscle mass, muscle strength and physical performance in older women with reduced muscle mass: protocol for a randomised, double-blind, placebo-controlled trial, 2019. Source: fullraw:openalex. ID: https://doi.org/10.1136/bmjopen-2018-025723
3. 10.71878/jpah.2025.1197082 Evaluation of the synergistic effects of resistance training and saffron supplementation on reducing amyloid beta accumulation and improving cognitive function in a rat Alzheimer's model, 2025. Source: fullraw:openalex. ID: https://doi.org/10.71878/jpah.2025.1197082

**Safety note:** This memo is an alpha hypothesis. A later LLM writer may sharpen prose, but it may not add claims beyond the receipts above.

{
  "article_type": "alpha_memo",
  "domain_slug": "longevity_research",
  "researka_object_type": "submission",
  "researka_submission_id": "fec1c406-de1b-4638-a518-595a2ea52d78",
  "title": "Beta-Alanine Does Not Enhance the Effects of Resistance Training in Older Adults"
}