Parkinson's Disease
The sources below back the nutrition and movement recommendations Take the Stairs provides for users on the Steady Steps path with Parkinson's. The cited authors are not affiliated with Take the Stairs; we cite their published research as the basis for our protocol.
Architecture — Smartphone-based PD exercise interventions
Schootemeijer et al. 2023 — STEPWISE study protocol
Schootemeijer S, de Vries NM, Macklin EA, Roes KCB, Joosten H, Omberg L, Ascherio A, Schwarzschild MA, Bloem BR. The STEPWISE study: study protocol for a smartphone-based exercise solution for people with Parkinson's Disease (randomized controlled trial). BMC Neurology. 2023;23:323.
Backs claims in:
Architecture-level — smartphone-based exercise interventions for PD are an actively studied delivery format; Bloem's group at Radboud is among the leading research groups designing them. Does NOT back any specific in-protocol movement or nutrition claim by itself.
Study protocol paper describing a planned 1-year RCT with 452 Dutch PD participants; reports no outcomes data. Bloem is senior author (9 of 9), not first — cited as "Schootemeijer et al. 2023," not "Bloem 2023." Architectural-level citation only.
Movement — Large-amplitude training
Farley & Koshland 2005 — Training BIG to move faster
Farley BG, Koshland GF. Training BIG to move faster: the application of the speed–amplitude relation as a rehabilitation strategy for people with Parkinson's disease. Experimental Brain Research. 2005;167(3):462–467.
Backs claims in:
Parkinson's protocol — large-amplitude movement training improves PD motor symptoms across Hoehn-Yahr Stages I–III.
Foundational small-N (n=18) proof-of-concept paper that established the speed–amplitude rehabilitation principle. Pair with Ebersbach 2010 for the actual LSVT BIG randomized controlled trial.
Movement — LSVT BIG clinical efficacy
Ebersbach et al. 2010 — Berlin LSVT BIG randomized trial
Ebersbach G, Ebersbach A, Edler D, Kaufhold O, Kusch M, Kupsch A, Wissel J. Comparing exercise in Parkinson's disease — the Berlin LSVT®BIG study. Movement Disorders. 2010;25(12):1902–1908.
Backs claims in:
Parkinson's protocol — LSVT BIG demonstrates greater motor-function improvement than Nordic walking or unassisted home exercise in PD; large-amplitude movement training generalizes to functional gait measures at the 16-week post-baseline endpoint.
Trial endpoint was 16 weeks (4-week intensive + 12-week follow-up). PD users on Steady Steps practice the LSVT BIG amplitude principle on a sustained per-cycle basis — long-term adherence beyond Ebersbach's 16-week window is patient-and-coach dependent, not directly demonstrated by this trial. PMID 20669294 — verified 2026-06-09 via Europe PMC (full author list, volume, issue, and pages match).
Movement — Home-based external cueing
Nieuwboer et al. 2007 — RESCUE trial
Nieuwboer A, Kwakkel G, Rochester L, Jones D, van Wegen E, Willems AM, Chavret F, Hetherington V, Baker K, Lim I. Cueing training in the home improves gait-related mobility in Parkinson's disease: the RESCUE trial. Journal of Neurology, Neurosurgery and Psychiatry. 2007;78(2):134–140.
Backs claims in:
Parkinson's protocol — home-delivered external cueing training improves gait-related mobility in PD. Severity of freezing reduced by 5.5% in freezers; gait speed, step length, and timed balance tests improved in the full cohort (3-week intervention).
RESCUE intervention period was 3 weeks; effects measured at 6-week endpoint. PD users on Steady Steps practice external cueing on a sustained per-cycle basis; effects beyond the 6-week measurement window are not directly demonstrated by this trial.
Movement — Exercise-induced neuroplasticity
Petzinger et al. 2013 — Exercise-enhanced neuroplasticity in PD
Petzinger GM, Fisher BE, McEwen S, Beeler JA, Walsh JP, Jakowec MW. Exercise-enhanced neuroplasticity targeting motor and cognitive circuitry in Parkinson's disease. The Lancet Neurology. 2013;12(7):716–726.
Backs claims in:
Parkinson's protocol — aerobic and skill-based exercise drive neuroplastic adaptation in PD motor and cognitive circuitry.
Review article synthesizing preclinical and clinical evidence; cite for the mechanism, pair with intervention trials for efficacy specifics.
Nutrition — L-Dopa absorption and dietary protein
Nutt et al. 1984 — The "on-off" phenomenon in Parkinson's disease
Nutt JG, Woodward WR, Hammerstad JP, Carter JH, Anderson JL. The "on-off" phenomenon in Parkinson's disease. Relation to levodopa absorption and transport. New England Journal of Medicine. 1984;310(8):483–488.
Backs claims in:
Parkinson's protocol — meals reduce peak plasma levodopa by ~29% and delay absorption by ~34 minutes; high-protein meals or oral phenylalanine, leucine, or isoleucine (100 mg/kg body weight) reverse the therapeutic effect of infused levodopa. This is the foundational mechanism behind the L-Dopa-aware meal-schedule architecture (low-protein breakfast and lunch; protein-loaded dinner).
Foundational mechanism paper, still the consensus reference for L-Dopa pharmacokinetics in PD. PMID 6694694 — verified 2026-06-09 via PubMed (title, all five authors, issue, and pages match). Modern clinical-outcomes work (Karstaedt & Pincus 1992, Cereda 2010, current Movement Disorders Society guidance) builds directly on this paper.
Movement — Freezing of gait, definition
Nutt et al. 2011 — Freezing of gait, moving forward
Nutt JG, Bloem BR, Giladi N, Hallett M, Horak FB, Nieuwboer A. Freezing of gait: moving forward on a mysterious clinical phenomenon. The Lancet Neurology. 2011;10(8):734–744.
Backs claims in:
Parkinson's protocol — definition and clinical framework of freezing-of-gait (brief episodes of inability to step or extremely short steps that typically occur on initiating gait or on turning while walking).
Nutrition — Flavonoids and PD risk
Gao et al. 2012 — Habitual flavonoid intake and PD risk
Gao X, Cassidy A, Schwarzschild MA, Rimm EB, Ascherio A. Habitual intake of dietary flavonoids and risk of Parkinson disease. Neurology. 2012;78(15):1138–1145.
Backs claims in:
Parkinson's protocol — anthocyanins and berries are associated with lower PD risk in pooled cross-cohort analyses (highest vs lowest berry intake associated with ~23% lower PD risk; HR 0.77, quintile comparison). Supports the "berries support the documented flavonoid signal" framing rather than a prescriptive "berries lower PD risk" claim.
The widely-quoted "40% lower PD risk" finding from this paper is MEN-SPECIFIC (Health Professionals Follow-Up Study). The pooled cross-sex finding is the anthocyanin/berry signal. User-facing copy honors this sex-specificity and the hedged framing both Maurizio Facheris MD (MJFF) and Alberto Ascherio MD (paper senior author) used when discussing the paper publicly.
Nutrition — Caffeine and PD risk
Ascherio et al. 2001 — Caffeine consumption and PD risk
Ascherio A, Zhang SM, Hernán MA, Kawachi I, Colditz GA, Speizer FE, Willett WC. Prospective study of caffeine consumption and risk of Parkinson's disease in men and women. Annals of Neurology. 2001;50(1):56–63.
Backs claims in:
Parkinson's protocol — higher caffeine intake (coffee and tea) is associated with reduced PD risk in long-term prospective cohorts in men; a U-shaped relationship is observed in women with lowest risk at moderate intake (1–3 cups/day).
Framing constraint per the Michael J. Fox Foundation's Diet Guide: there is no significant support for coffee or caffeine as a treatment to slow Parkinson's or treat its symptoms. Because coffee and green tea contain antioxidants, consuming them in moderation may be good for general health. User-facing copy uses this moderation framing — it does not make a prescriptive "drink more coffee for PD" claim.
Nutrition — Dairy and PD risk
Chen et al. 2002 — Dairy products and PD risk
Chen H, Zhang SM, Hernán MA, Willett WC, Ascherio A. Diet and Parkinson's disease: a potential role of dairy products in men. Annals of Neurology. 2002;52(6):793–801.
Backs claims in:
Parkinson's protocol — higher dairy intake is associated with elevated PD risk in men only (relative risk 1.8), not in women (relative risk 1.1); the association is not causally established at the observational level. The COURAGE-PD 2022 Mendelian randomization study (Domenighetti et al., Movement Disorders) replicates this sex-specific signal using a stronger causal design.
Sex-stratification (men only) is honored in protocol-internal prose but is not the lead user-facing framing. Framing constraint per the Michael J. Fox Foundation, quoting Caroline Tanner MD PhD: "Alarm is not indicated, and moderate intake, possibly using organic products that have more attention to what kinds of things animals are eating, would be a reasonable and prudent course." User-facing copy uses moderation framing — it does not use "avoid dairy" language.
Nutrition — Omega-3 and PD animal model
Bousquet et al. 2008 — Omega-3 PUFA in MPTP-PD mouse model
Bousquet M, Saint-Pierre M, Julien C, Salem N Jr, Cicchetti F, Calon F. Beneficial effects of dietary omega-3 polyunsaturated fatty acid on toxin-induced neuronal degeneration in an animal model of Parkinson's disease. FASEB Journal. 2008;22(4):1213–1225.
Backs claims in:
Parkinson's protocol — dietary omega-3 PUFA (EPA and DHA) demonstrates dopaminergic neuroprotection in MPTP-induced PD animal models, suggesting biological plausibility for emphasizing omega-3 sources (fatty fish, walnuts, flaxseed) in PD nutrition.
Animal-model evidence; human RCT evidence for PD prevention is thinner. User-facing copy says "fatty fish supports brain health," not "fatty fish prevents PD." PMID 18032633 — verified 2026-06-09 via PubMed (title and author list match).
Nutrition — Mediterranean diet and PD
Alcalay et al. 2012 — Mediterranean diet adherence and PD
Alcalay RN, Gu Y, Mejia-Santana H, Cote L, Marder KS, Scarmeas N. The association between Mediterranean diet adherence and Parkinson's disease. Movement Disorders. 2012;27(6):771–774.
Backs claims in:
Parkinson's protocol — in a case-control PD cohort, higher Mediterranean diet adherence was associated with reduced PD odds (odds ratio 0.86, 95% CI 0.77–0.97). Among PD patients, lower Mediterranean adherence correlated with earlier age at onset.
Case-control study design (not prospective). Primary statistic is the case-control odds ratio of 0.86; the age-at-onset finding is secondary and applies only among PD patients.
Nutrition — MIND diet and cognitive resilience
Morris et al. 2015 — MIND diet and reduced Alzheimer's incidence
Morris MC, Tangney CC, Wang Y, Sacks FM, Bennett DA, Aggarwal NT. MIND diet associated with reduced incidence of Alzheimer's disease. Alzheimer's & Dementia. 2015;11(9):1007–1014.
Backs claims in:
Parkinson's protocol — the MIND diet (a Mediterranean-DASH hybrid emphasizing leafy greens, berries, nuts, beans, whole grains, fish, poultry, and olive oil) was associated with reduced Alzheimer's incidence in a 923-person prospective cohort over an average 4.5-year follow-up. We cite this paper for the broader cognitive-resilience signal that supports the MIND framework.
Morris 2015 is Alzheimer's-specific; PD-MCI (mild cognitive impairment) extension is reasonable but PD-specific MIND validation work is queued for future verification. User-facing copy uses cognitive-resilience language ("foods that support your brain over time"), not disease-trajectory language.
Full Climb — general fitness
The sources below back the nutrition, movement, and recovery recommendations Take the Stairs provides for users on the Full Climb path (full mobility, general fitness, recreational and competitive athletic goals). The cited authors are not affiliated with Take the Stairs; we cite their published research as the basis for our protocol.
Movement — Resistance training progression
ACSM 2009 — Position Stand on progression models in resistance training
American College of Sports Medicine. Progression Models in Resistance Training for Healthy Adults [Position Stand]. Medicine & Science in Sports & Exercise. 2009;41(3):687–708.
Backs claims in:
Full Climb protocol — periodization-aware resistance training programming requires path × goal × training-history-aware progression block selection rather than streak-time-driven prescriptions.
Movement — Hypertrophy and strength loading
Schoenfeld et al. 2015 — Low- vs. high-load resistance training
Schoenfeld BJ, Peterson MD, Ogborn D, Contreras B, Sonmez GT. Effects of low- vs. high-load resistance training on muscle strength and hypertrophy in well-trained men. Journal of Strength and Conditioning Research. 2015;29(10):2954–2963.
Backs claims in:
Full Climb protocol — progressive overload tracks load relative to capacity; rep-range escalation across cycles should serve the specific periodization block (hypertrophy vs. strength vs. endurance) rather than default to endurance-pattern escalation.
Movement — Overtraining and planned recovery
Bell et al. 2020 — Overreaching and overtraining in strength sports
Bell L, Ruddock A, Maden-Wilkinson T, Rogerson D. Overreaching and overtraining in strength sports and resistance training: a scoping review. Journal of Sports Sciences. 2020;38(16):1897–1912.
Backs claims in:
Full Climb protocol — sustained high-intensity resistance training without planned recovery raises the risk of overreaching, overtraining, and performance plateau; planned recovery is part of sound long-term programming. This is the basis for the Full Climb deload cycle. PD users on Steady Steps use a different recovery mechanism — the Elevator Day pattern — rather than the Full Climb deload cycle.
This scoping review establishes that planned recovery matters and that overtraining is a real risk in adherent high-intensity training; it does not itself prescribe a specific deload frequency or percentage. The protocol's specific schedule — a deload cycle roughly every four cycles at 30–50% reduced load with the same movement patterns — is a standard periodization convention drawn from the ACSM 2009 Position Stand on progression models (cited above), not a quantitative finding from this paper.
Nutrition — Protein for older adults
Bauer et al. 2013 — PROT-AGE protein recommendations
Bauer J, Biolo G, Cederholm T, et al. Evidence-Based Recommendations for Optimal Dietary Protein Intake in Older People: A Position Paper From the PROT-AGE Study Group. Journal of the American Medical Directors Association. 2013;14(8):542–559.
Backs claims in:
Full Climb protocol — daily protein targets for healthy adults aged 60+ are 1.0–1.2 g/kg; for adults aged 60+ with chronic disease are 1.2–1.5 g/kg; for athletic / muscle-building goals in the general adult population are 1.4–2.0 g/kg per ISSN guidelines.
Nutrition — Mediterranean diet RCT
Estruch et al. 2018 — PREDIMED Mediterranean diet
Estruch R, Ros E, Salas-Salvadó J, et al. Primary Prevention of Cardiovascular Disease with a Mediterranean Diet Supplemented with Extra-Virgin Olive Oil or Nuts. New England Journal of Medicine. 2018;378:e34.
Backs claims in:
Full Climb protocol — the Mediterranean diet pattern (extra-virgin olive oil, vegetables, fish, whole grains, nuts, modest wine) demonstrates cardiovascular disease primary-prevention benefit in a 5-year randomized controlled trial; broader longevity-pattern alignment with Blue Zone Blend principles.
This is the 2018 revised PREDIMED publication. The original 2013 publication was retracted and re-published with corrected randomization methodology; the 2018 paper is the standing reference.
Nutrition — Time-restricted eating
Hatori et al. 2012 & Wilkinson et al. 2020 — Time-restricted eating
Hatori M, Vollmers C, Zarrinpar A, et al. Time-restricted feeding without reducing caloric intake prevents metabolic diseases in mice fed a high-fat diet. Cell Metabolism. 2012;15(6):848–860.
Wilkinson MJ, Manoogian ENC, Zadourian A, et al. Ten-hour time-restricted eating reduces weight, blood pressure, and atherogenic lipids in patients with metabolic syndrome. Cell Metabolism. 2020;31(1):92–104.
Backs claims in:
Full Climb protocol — a 10–12 hour daytime eating window with overnight fast supports glucose tolerance, lipid profile, blood pressure, body composition, and inflammatory markers in metabolic-syndrome populations without explicit caloric restriction. The 2012 paper establishes the mechanism in mice; the 2020 paper demonstrates the effect in a human metabolic-syndrome cohort.
Nutrition — Caffeine timing and sleep
Drake et al. 2013 & Cornelis et al. 2006 — Caffeine timing
Drake C, Roehrs T, Shambroom J, Roth T. Caffeine effects on sleep taken 0, 3, or 6 hours before going to bed. Journal of Clinical Sleep Medicine. 2013;9(11):1195–1200.
Cornelis MC, El-Sohemy A, Kabagambe EK, Campos H. Coffee, CYP1A2 genotype, and risk of myocardial infarction. JAMA. 2006;295(10):1135–1141.
Backs claims in:
Full Climb protocol — caffeine even 6 hours before bed measurably disrupts sleep, supporting a cutoff of at least 6 hours — conservatively 8 — before typical bedtime to preserve sleep latency and deep-sleep architecture; CYP1A2 metabolic variability means slow metabolizers should extend the cutoff further.
Behavior — Habit formation
Fogg 2020 — Tiny Habits
Fogg BJ. Tiny Habits: The Small Changes That Change Everything. Houghton Mifflin Harcourt. 2020.
Backs claims in:
Full Climb protocol — habit formation follows the "After I [existing routine], I will [new tiny behavior]" anchor pattern; environmental anchors carry habits past the first 21 days; celebration immediately after the behavior wires the habit reinforcement loop.
Trade book (not a peer-reviewed paper). Fogg's behavior model is widely cited in academic behavior-design literature; the book is the canonical compact reference for his Tiny Habits methodology.
Recovery — Sauna and cardiovascular health
Laukkanen et al. 2015 — Sauna bathing and CV mortality
Laukkanen T, Khan H, Zaccardi F, Laukkanen JA. Association Between Sauna Bathing and Fatal Cardiovascular and All-Cause Mortality Events. JAMA Internal Medicine. 2015;175(4):542–548.
Backs claims in:
Full Climb protocol — sauna bathing 2–3 times per week was associated with 23% lower fatal coronary heart disease risk; 4–7 times per week was associated with 48% lower fatal CHD risk versus once per week, in 2,315 middle-aged Finnish men followed over 20.7 years.
Recovery — Sauna and cognitive health
Laukkanen et al. 2017 — Sauna bathing and dementia
Laukkanen T, Kunutsor S, Kauhanen J, Laukkanen JA. Sauna bathing is inversely associated with dementia and Alzheimer's disease in middle-aged Finnish men. Age and Ageing. 2017;46(2):245–249.
Backs claims in:
Full Climb protocol — sauna 4–7 times per week versus once per week was associated with 66% reduced dementia risk and 65% reduced Alzheimer's risk in the same KIHD cohort (2,315 Finnish men).
PMID 27932366, DOI 10.1093/ageing/afw212 — verified 2026-06-09 via PubMed (title, journal, volume, issue, and pages match).
Nutrition — Vitamin D, omega-3, and serotonin
Patrick & Ames 2015 — Vitamin D and omega-3 fatty acids in serotonin synthesis
Patrick RP, Ames BN. Vitamin D and the omega-3 fatty acids control serotonin synthesis and action, part 2: relevance for ADHD, bipolar disorder, schizophrenia, and impulsive behavior. FASEB Journal. 2015;29(6):2207–2222.
Backs claims in:
Full Climb protocol — vitamin D and omega-3 fatty acids regulate serotonin synthesis with relevance for mood and neurological function.
Nutrition — Vitamin D and fracture prevention
Bischoff-Ferrari et al. 2009 — Vitamin D and nonvertebral fractures
Bischoff-Ferrari HA, Willett WC, Wong JB, et al. Prevention of nonvertebral fractures with oral vitamin D and dose dependency: a meta-analysis of randomized controlled trials. Archives of Internal Medicine. 2009;169(6):551–561.
Backs claims in:
Full Climb protocol — vitamin D supplementation reduces nonvertebral fracture risk in a dose-dependent manner per a meta-analysis of randomized controlled trials.
Movement — Kettlebell strength transfer
Manocchia et al. 2013 — Kettlebell training transference
Manocchia P, Spierer DK, Lufkin AKS, Minichiello J, Castro J. Transference of kettlebell training to strength, power, and endurance. Journal of Strength and Conditioning Research. 2013;27(2):477–484.
Backs claims in:
Full Climb protocol — a 10-week kettlebell training program transferred to barbell strength, power, and endurance in 37 subjects (n=23 experimental, n=14 control).
Movement — Kettlebell swing for strength
Lake & Lauder 2012 — Kettlebell swing strength gains
Lake JP, Lauder MA. Kettlebell Swing Training Improves Maximal and Explosive Strength. Journal of Strength and Conditioning Research. 2012;26(8):2228–2233.
Backs claims in:
Full Climb protocol — a 12-minute kettlebell swing protocol twice per week improved half-squat 1-rep-max by approximately 12% and vertical jump by 15% in 21 men over the training cycle.
Movement — Kettlebell vs. weightlifting
Otto et al. 2012 — Weightlifting vs. kettlebell training
Otto WH III, Coburn JW, Brown LE, Spiering BA. Effects of weightlifting vs. kettlebell training on vertical jump, strength, and body composition. Journal of Strength and Conditioning Research. 2012;26(5):1199–1202.
Backs claims in:
Full Climb protocol — both kettlebell and Olympic weightlifting produced strength gains over 6 weeks. Weightlifting produced greater gains for maximum strength (back squat +14% vs +4.5% kettlebell). Vertical-jump gains did not differ significantly between the two groups.
Honest framing: kettlebell training has real applications and transfers but is NOT a replacement for barbell work when maximum strength and power are the primary goals.
Movement — Running and mortality
Lee et al. 2014 — Leisure-time running and mortality
Lee DC, Pate RR, Lavie CJ, Sui X, Church TS, Blair SN. Leisure-time running reduces all-cause and cardiovascular mortality risk. Journal of the American College of Cardiology. 2014;64(5):472–481.
Backs claims in:
Full Climb protocol — in 55,137 adults followed for a median 15 years, runners had 30% lower all-cause mortality and 45% lower cardiovascular mortality versus non-runners. Benefit appeared at even 5–10 minutes per day at slow paces.
Behavior — Grit and perseverance
Duckworth et al. 2007 — Grit and long-term goals
Duckworth AL, Peterson C, Matthews MD, Kelly DR. Grit: Perseverance and Passion for Long-Term Goals. Journal of Personality and Social Psychology. 2007;92(6):1087–1101.
Backs claims in:
Full Climb protocol — grit (perseverance and passion for long-term goals) accounted for approximately 4% of variance in success outcomes across 6 studies including West Point cadet retention and Spelling Bee ranking.
Honest framing: grit accounts for about 4% of variance — it is NOT the primary driver of fitness outcomes. Talent, opportunity, circumstance, and structured programming are larger factors.
Movement — Endurance training distribution
Seiler 2010 — Polarized training distribution
Seiler S. What is best practice for training intensity and duration distribution in endurance athletes? International Journal of Sports Physiology and Performance. 2010;5(3):276–291.
Backs claims in:
Full Climb protocol — nationally and internationally competitive endurance athletes self-organize to approximately 80% low-intensity (at or below 2 millimolar blood lactate) and 20% high-intensity training distribution.
Honest framing: extreme-volume training sits at the far tail of this distribution — validated as a methodology for ultra-endurance athletes but carries significant injury and recovery costs. The Full Climb protocol does NOT recommend extreme volume as a default.
Recovery — Cold water immersion
Cain et al. 2025 — Cold water immersion systematic review
Cain T, Brinsley J, Bennett H, Nelson M, Maher C, Singh B. Effects of cold-water immersion on health and wellbeing: A systematic review and meta-analysis. PLOS One. 2025;20(1):e0317615.
Backs claims in:
Full Climb protocol — cold water immersion at or below 15°C for at least 30 seconds (via cold shower, ice bath, or plunge) delivers time-dependent effects on inflammation, stress, immunity, sleep quality, and quality of life in 11 RCTs meta-analyzed across 3,177 healthy adults.
Honest framing per Cain's own caveats: the evidence base is constrained by relatively few RCTs, small sample sizes, and lack of population diversity. Acute inflammatory response occurs immediately post-immersion and is modulated only with repeated exposure.
Movement — Polarized training RCT
Stöggl & Sperlich 2014 — Polarized training vs. alternatives
Stöggl T, Sperlich B. Polarized training has greater impact on key endurance variables than threshold, high intensity, or high volume training. Frontiers in Physiology. 2014;5:33.
Backs claims in:
Full Climb protocol — 48 well-trained endurance athletes (runners, cyclists, triathletes, cross-country skiers) randomized across 4 training distributions. The polarized distribution (68% low / 6% threshold / 26% high) produced the greatest improvements in key endurance variables versus threshold (46/54/0%), high-intensity (43/0/57%), and high-volume (83/16/1%) distributions.
Recovery — Sleep extension and performance
Mah et al. 2011 — Sleep extension and athletic performance
Mah CD, Mah KE, Kezirian EJ, Dement WC. The effects of sleep extension on the athletic performance of collegiate basketball players. Sleep. 2011;34(7):943–950.
Backs claims in:
Full Climb protocol — 11 Stanford basketball players, 5–7 weeks of sleep extension to at least 10 hours in bed: total sleep time increased 110.9 minutes per night; sprint speed improved from 16.2 to 15.5 seconds; free throw and 3-point accuracy improved 9%; reaction time, vigor, fatigue, and mood all improved.
Movement — CrossFit overview
Claudino et al. 2018 — CrossFit systematic review
Claudino JG, Gabbett TJ, Bourgeois F, Souza HS, Miranda RC, Mezencio B, Soncin R, Filho CAC, Bottaro M, Hernandez AJ, Amadio AC, Serrão JC. CrossFit Overview: Systematic Review and Meta-analysis. Sports Medicine - Open. 2018;4:11.
Backs claims in:
Full Climb protocol — systematic review and meta-analysis of CrossFit literature (PRISMA-guided; Oxford Levels of Evidence): preliminary data supports CrossFit associated with higher levels of sense of community, satisfaction, and motivation.
Honest framing per Claudino's own caveats: few studies with high levels of evidence at low risk of bias. The CrossFit safety profile has been studied separately; injury rates are sport-comparable when programming is supervised. Substituted into the protocol after a candidate CrossFit paper from a different research group was identified during our verification pass as having been retracted; the retracted paper is NOT cited here.
Movement — Push-up vs. bench press
Calatayud et al. 2015 — Push-up and bench press strength equivalence
Calatayud J, Borreani S, Colado JC, Martin F, Tella V, Andersen LL. Bench press and push-up at comparable levels of muscle activity results in similar strength gains. Journal of Strength and Conditioning Research. 2015;29(1):246–253.
Backs claims in:
Full Climb protocol — 5-week RCT comparing 6-rep-max bench press versus 6-rep-max elastic-band push-up; both groups produced similar strength gains when EMG-matched intensity was equivalent.
Honest framing: equivalence requires PROGRESSIVE bodyweight intensity (banded push-ups, unilateral progressions, weighted variations) — not casual push-ups. Calisthenics builds real strength when programmed with progression rigor matching what barbell work would receive.
Mind-body — Yoga and stress physiology
Pascoe et al. 2017 — Yoga and stress-related physiological measures
Pascoe MC, Thompson DR, Ski CF. Yoga, mindfulness-based stress reduction and stress-related physiological measures: A meta-analysis. Psychoneuroendocrinology. 2017;86:152–168.
Backs claims in:
Full Climb protocol — meta-analysis of RCTs comparing yoga (with or without mindfulness-based stress reduction) to active controls on stress-related physiological measures: yoga reduced cortisol, systolic blood pressure, heart rate, fasting blood glucose, cholesterol, and LDL.
Honest framing per Pascoe's findings: significant reductions were observed across various populations; subgroup analysis indicated stronger effects in clinical samples (especially women with breast cancer), with smaller but documented effects in healthy adults.