Research library

Every study,
one place.

Every study our articles and programs cite. Each links to its PubMed page and to everything on this site that uses it. How we check sources

79 studies · 116 citations

79 studies

  1. Effects of moderate-intensity endurance and high-intensity intermittent training on anaerobic capacity and VO2max

    Tabata et al., 1996. Medicine & Science in Sports & Exercise 28(10):1327-1330.

    Cited in 6 placesTrain to look good and carry weight in 40 minutes · Tabata intervals for VO2max: what the research actually used · How often to take the Cooper test, and how fast results change · How anaerobic capacity and VO2max work together · Front Carry: 8-Week Strength & Aesthetics (40-Minute Sessions) (program) · Front Carry: 30-Day Express (20-Minute Sessions) (program)

  2. A systematic review, meta-analysis and meta-regression of the effect of protein supplementation on resistance training-induced gains in muscle mass and strength in healthy adults

    Morton et al., 2018. British Journal of Sports Medicine 52(6):376-384.

    Cited in 4 placesProtein: how your body uses it, and how much you need · Train to look good and carry weight in 40 minutes · Front Carry: 8-Week Strength & Aesthetics (40-Minute Sessions) (program) · Front Carry: 30-Day Express (20-Minute Sessions) (program)

  3. Effects of Resistance Training Frequency on Measures of Muscle Hypertrophy: A Systematic Review and Meta-Analysis

    Schoenfeld et al., 2016. Sports Medicine 46(11):1689-1697.

    Cited in 4 placesTrain to look good and carry weight in 40 minutes · Front Carry: 8-Week Strength & Aesthetics (40-Minute Sessions) (program) · Front Carry: 30-Day Express (20-Minute Sessions) (program) · Pattern Strength: 8-Week Full Body (program)

  4. Effectiveness of high-intensity interval training (HIT) and continuous endurance training for VO2max improvements: a systematic review and meta-analysis of controlled trials

    Milanović et al., 2015. Sports Medicine 45(10):1469-1481.

    Cited in 4 placesWhat VO2max is, and why it matters · Running to increase your VO2max · Tabata intervals for VO2max: what the research actually used · How often to take the Cooper test, and how fast results change

  5. No Time to Lift? Designing Time-Efficient Training Programs for Strength and Hypertrophy: A Narrative Review

    Iversen et al., 2021. Sports Medicine 51(10):2079-2095.

    Cited in 3 placesTrain to look good and carry weight in 40 minutes · Front Carry: 8-Week Strength & Aesthetics (40-Minute Sessions) (program) · Front Carry: 30-Day Express (20-Minute Sessions) (program)

  6. Dose-response relationship between weekly resistance training volume and increases in muscle mass: A systematic review and meta-analysis

    Schoenfeld et al., 2017. Journal of Sports Sciences 35(11):1073-1082.

    Cited in 3 placesTrain to look good and carry weight in 40 minutes · Front Carry: 8-Week Strength & Aesthetics (40-Minute Sessions) (program) · Front Carry: 30-Day Express (20-Minute Sessions) (program)

  7. Comparison of different strongman events: trunk muscle activation and lumbar spine motion, load, and stiffness

    McGill et al., 2009. Journal of Strength and Conditioning Research 23(4):1148-1161.

    Cited in 3 placesTrain to look good and carry weight in 40 minutes · Front Carry: 8-Week Strength & Aesthetics (40-Minute Sessions) (program) · Front Carry: 30-Day Express (20-Minute Sessions) (program)

  8. Relative running intensity and pacing during an official HYROX PRO MEN competition: the HYScience study

    Gutiérrez-Hellín et al., 2026. International Journal of Sports Physiology and Performance.

    Cited in 2 placesCompromised running: why your pace falls apart after HYROX stations · What a HYROX race actually demands

  9. Task specificity of dynamic resistance training and its transferability to non-trained isometric muscle strength: a systematic review with meta-analysis

    Saeterbakken et al., 2025. Sports Medicine 55(7):1651-1676.

    Cited in 2 placesTrain movement patterns, not muscles · Pattern Strength: 8-Week Full Body (program)

  10. The anabolic response to protein ingestion during recovery from exercise has no upper limit in magnitude and duration in vivo in humans

    Trommelen et al., 2023. Cell Reports Medicine 4(12):101324.

    Cited in 2 placesProtein: how your body uses it, and how much you need · Training for years without the social media body

  11. A review of the acute effects and long-term adaptations of single- and multi-joint exercises during resistance training

    Gentil et al., 2017. Sports Medicine 47(5):843-855.

    Cited in 2 placesTrain movement patterns, not muscles · Pattern Strength: 8-Week Full Body (program)

  12. International Society of Sports Nutrition position stand: protein and exercise

    Jäger et al., 2017 (ISSN position stand). Journal of the International Society of Sports Nutrition 14:20.

    Cited in 2 placesAmino acids, and what protein quality actually means · Protein: how your body uses it, and how much you need

  13. The effects of adding single-joint exercises to a multi-joint exercise resistance training program on upper body muscle strength and size in trained men

    de França et al., 2015. Applied Physiology, Nutrition, and Metabolism 40(8):822-826.

    Cited in 2 placesTrain movement patterns, not muscles · Pattern Strength: 8-Week Full Body (program)

  14. Effects of kettlebell training on aerobic capacity

    Falatic et al., 2015. Journal of Strength and Conditioning Research 29(7):1943-1947.

    Cited in 2 placesKettlebell circuits for VO2max: what the evidence supports · How often to take the Cooper test, and how fast results change

  15. The effects of high intensity interval training vs steady state training on aerobic and anaerobic capacity

    Foster et al., 2015. Journal of Sports Science and Medicine 14(4):747-755.

    Cited in 2 placesTabata intervals for VO2max: what the research actually used · How often to take the Cooper test, and how fast results change

  16. Timing and distribution of protein ingestion during prolonged recovery from resistance exercise alters myofibrillar protein synthesis

    Areta et al., 2013. The Journal of Physiology 591(9):2319-2331.

    Cited in 2 placesProtein: how your body uses it, and how much you need · Training for years without the social media body

  17. VO2max trainability and high intensity interval training in humans: a meta-analysis

    Bacon et al., 2013. PLOS ONE 8(9):e73182.

    Cited in 2 placesRunning to increase your VO2max · Tabata intervals for VO2max: what the research actually used

  18. Effect of adding single-joint exercises to a multi-joint exercise resistance-training program on strength and hypertrophy in untrained subjects

    Gentil et al., 2013. Applied Physiology, Nutrition, and Metabolism 38(3):341-344.

    Cited in 2 placesTrain movement patterns, not muscles · Pattern Strength: 8-Week Full Body (program)

  19. The effect of protein timing on muscle strength and hypertrophy: a meta-analysis

    Schoenfeld et al., 2013. Journal of the International Society of Sports Nutrition 10(1):53.

    Cited in 2 placesProtein: how your body uses it, and how much you need · Training for years without the social media body

  20. Cardiorespiratory fitness as a quantitative predictor of all-cause mortality and cardiovascular events in healthy men and women: a meta-analysis

    Kodama et al., 2009. JAMA 301(19):2024-2035.

    Cited in 2 placesWhat VO2max is, and why it matters · How little training keeps your VO2max

  21. Aerobic high-intensity intervals improve VO2max more than moderate training

    Helgerud et al., 2007. Medicine & Science in Sports & Exercise 39(4):665-671.

    Cited in 2 placesRunning to increase your VO2max · How often to take the Cooper test, and how fast results change

  22. Accelerated longitudinal decline of aerobic capacity in healthy older adults

    Fleg et al., 2005. Circulation 112(5):674-682.

    Cited in 2 placesWhat VO2max is, and why it matters · How little training keeps your VO2max

  23. Variability in muscle size and strength gain after unilateral resistance training

    Hubal et al., 2005. Medicine & Science in Sports & Exercise 37(6):964-972.

    Cited in 2 placesTraining for years without the social media body · Should you train for your body type?

  24. Limiting factors for maximum oxygen uptake and determinants of endurance performance

    Bassett and Howley, 2000. Medicine & Science in Sports & Exercise 32(1):70-84.

    Cited in 2 placesWhat VO2max is, and why it matters · Running to increase your VO2max

  25. Prevalence, burden and risk markers of health problems in HYROX athletes: a 12-week prospective cohort study

    Chittenden et al., 2026. Frontiers in Sports and Active Living 8:1937574.

    Cited in What a HYROX race actually demands

  26. Where am I struggling? Detailed benchmarks for every workout and category in Hyrox competition

    Fernández-Navarrete et al., 2026. Journal of Sports Medicine and Physical Fitness.

    Cited in What a HYROX race actually demands

  27. Longitudinal performance development in PRO and ELITE HYROX competitions across the first seven competitive seasons

    Rappelt et al., 2026. Frontiers in Physiology 17:1847569.

    Cited in Compromised running: why your pace falls apart after HYROX stations

  28. Acute physiological responses and performance determinants in Hyrox: a new running-focused high intensity functional fitness trend

    Brandt et al., 2025. Frontiers in Physiology 16:1519240.

    Cited in What a HYROX race actually demands

  29. Durability in youth squad triathletes: influence of strenuous cycling on subsequent running performance, economy, and substrate utilization

    Röhrs et al., 2025. International Journal of Sports Physiology and Performance 20(7):907-917.

    Cited in Compromised running: why your pace falls apart after HYROX stations

  30. Cold urticaria syndromes: diagnosis and management

    Diaz et al., 2023. Journal of Allergy and Clinical Immunology: In Practice 11(8):2275-2285.

    Cited in Why you itch while running, and how to prevent it

  31. Cholinergic urticaria: subtype classification and clinical approach

    Fukunaga et al., 2023. American Journal of Clinical Dermatology 24(1):41-54.

    Cited in Why you itch while running, and how to prevent it

  32. Biomechanical and physiological implications to running after cycling and strategies to improve cycling to running transition: a systematic review

    Rico Bini et al., 2022. Journal of Science and Medicine in Sport 25(10):861-866.

    Cited in Compromised running: why your pace falls apart after HYROX stations

  33. Discovering the sluggishness of triathlon running: using the attractor method to quantify the impact of the bike-run transition

    Weich et al., 2022. Frontiers in Sports and Active Living 4:1065741.

    Cited in Compromised running: why your pace falls apart after HYROX stations

  34. Strength training versus stretching for improving range of motion: a systematic review and meta-analysis

    Afonso et al., 2021. Healthcare 9(4):427.

    Cited in Why mobility matters, and what actually improves it

  35. Maintaining physical performance: the minimal dose of exercise needed to preserve endurance and strength over time

    Spiering et al., 2021. Journal of Strength and Conditioning Research 35(5):1449-1458.

    Cited in How little training keeps your VO2max

  36. Food-dependent exercise-induced anaphylaxis

    Foong et al., 2019. Current Opinion in Allergy and Clinical Immunology 19(3):224-228.

    Cited in Why you itch while running, and how to prevent it

  37. Effects of cycling on subsequent running performance, stride length, and muscle oxygen saturation in triathletes

    Olcina et al., 2019. Sports 7(5):115.

    Cited in Compromised running: why your pace falls apart after HYROX stations

  38. Changes in kidney function do not differ between healthy adults consuming higher- compared with lower- or normal-protein diets: a systematic review and meta-analysis

    Devries et al., 2018. The Journal of Nutrition 148(11):1760-1775.

    Cited in Protein: how your body uses it, and how much you need

  39. Effect of low-fat vs low-carbohydrate diet on 12-month weight loss in overweight adults and the association with genotype pattern or insulin secretion: the DIETFITS randomized clinical trial

    Gardner et al., 2018 (DIETFITS). JAMA 319(7):667-679.

    Cited in Should you train for your body type?

  40. Association of cardiorespiratory fitness with long-term mortality among adults undergoing exercise treadmill testing

    Mandsager et al., 2018. JAMA Network Open 1(6):e183605.

    Cited in What VO2max is, and why it matters

  41. Branched-chain amino acid ingestion stimulates muscle myofibrillar protein synthesis following resistance exercise in humans

    Jackman et al., 2017. Frontiers in Physiology 8:390.

    Cited in Amino acids, and what protein quality actually means

  42. Acute effects of plyometric and resistance training on running economy in trained runners

    Marcello et al., 2017. Journal of Strength and Conditioning Research 31(9):2432-2437.

    Cited in Compromised running: why your pace falls apart after HYROX stations

  43. Values for digestible indispensable amino acid scores (DIAAS) for some dairy and plant proteins may better describe protein quality than values calculated using the concept for protein digestibility-corrected amino acid scores (PDCAAS)

    Mathai et al., 2017. British Journal of Nutrition 117(4):490-499.

    Cited in Amino acids, and what protein quality actually means

  44. Branched-chain amino acids and muscle protein synthesis in humans: myth or reality?

    Wolfe, 2017. Journal of the International Society of Sports Nutrition 14:30.

    Cited in Amino acids, and what protein quality actually means

  45. Higher compared with lower dietary protein during an energy deficit combined with intense exercise promotes greater lean mass gain and fat mass loss: a randomized trial

    Longland et al., 2016. American Journal of Clinical Nutrition 103(3):738-746.

    Cited in Training for years without the social media body

  46. Critical power: an important fatigue threshold in exercise physiology

    Poole et al., 2016. Medicine & Science in Sports & Exercise 48(11):2320-2334.

    Cited in How anaerobic capacity and VO2max work together

  47. Exercise-induced anaphylaxis

    Feldweg, 2015. Immunology and Allergy Clinics of North America 35(2):261-275.

    Cited in Why you itch while running, and how to prevent it

  48. Combined strength and endurance session order: differences in force production and oxygen uptake

    Taipale et al., 2015. International Journal of Sports Physiology and Performance 10(4):418-425.

    Cited in Compromised running: why your pace falls apart after HYROX stations

  49. The skeletal muscle anabolic response to plant- versus animal-based protein consumption

    van Vliet et al., 2015. The Journal of Nutrition 145(9):1981-1991.

    Cited in Amino acids, and what protein quality actually means

  50. The effectiveness of exercise interventions to prevent sports injuries: a systematic review and meta-analysis of randomised controlled trials

    Lauersen et al., 2014. British Journal of Sports Medicine 48(11):871-877.

    Cited in Why mobility matters, and what actually improves it

  51. Polarized training has greater impact on key endurance variables than threshold, high intensity, or high volume training

    Stöggl and Sperlich, 2014. Frontiers in Physiology 5:33.

    Cited in Running to increase your VO2max

  52. Exercise intensity and energy expenditure of a Tabata workout

    Emberts et al., 2013. Journal of Sports Science and Medicine 12(3):612-613.

    Cited in Tabata intervals for VO2max: what the research actually used

  53. Effects of body fat and dominant somatotype on explosive strength and aerobic capacity trainability in prepubescent children

    Marta et al., 2013. Journal of Strength and Conditioning Research 27(12):3233-3244.

    Cited in Should you train for your body type?

  54. Does pre-exercise static stretching inhibit maximal muscular performance? A meta-analytical review

    Simic et al., 2013. Scandinavian Journal of Medicine & Science in Sports 23(2):131-148.

    Cited in Why mobility matters, and what actually improves it

  55. Quantity and quality of exercise for developing and maintaining cardiorespiratory, musculoskeletal, and neuromotor fitness in apparently healthy adults: guidance for prescribing exercise

    Garber et al., 2011 (ACSM position stand). Medicine & Science in Sports & Exercise 43(7):1334-1359.

    Cited in What VO2max is, and why it matters

  56. Kettlebell training for musculoskeletal and cardiovascular health: a randomized controlled trial

    Jay et al., 2011. Scandinavian Journal of Work, Environment & Health 37(3):196-203.

    Cited in Kettlebell circuits for VO2max: what the evidence supports

  57. Validity and reliability analysis of Cooper's 12-minute run and the multistage shuttle run in healthy adults

    Penry et al., 2011. Journal of Strength and Conditioning Research 25(3):597-605.

    Cited in How often to take the Cooper test, and how fast results change

  58. Gait speed and survival in older adults

    Studenski et al., 2011. JAMA 305(1):50-58.

    Cited in Why mobility matters, and what actually improves it

  59. Oxygen cost of kettlebell swings

    Farrar et al., 2010. Journal of Strength and Conditioning Research 24(4):1034-1036.

    Cited in Kettlebell circuits for VO2max: what the evidence supports

  60. Effect of recovery duration from prior exhaustive exercise on the parameters of the power-duration relationship

    Ferguson et al., 2010. Journal of Applied Physiology 108(4):866-874.

    Cited in How anaerobic capacity and VO2max work together

  61. Critical power: implications for determination of VO2max and exercise tolerance

    Jones et al., 2010. Medicine & Science in Sports & Exercise 42(10):1876-1890.

    Cited in How anaerobic capacity and VO2max work together

  62. Ingested protein dose response of muscle and albumin protein synthesis after resistance exercise in young men

    Moore et al., 2009. American Journal of Clinical Nutrition 89(1):161-168.

    Cited in Protein: how your body uses it, and how much you need

  63. Protein intake and energy balance

    Westerterp-Plantenga, 2008. Regulatory Peptides 149(1-3):67-69.

    Cited in Protein: how your body uses it, and how much you need

  64. Exercise-induced vasculitis

    Ramelet, 2006. Journal of the European Academy of Dermatology and Venereology 20(4):423-427.

    Cited in Why you itch while running, and how to prevent it

  65. Factors influencing variation in basal metabolic rate include fat-free mass, fat mass, age, and circulating thyroxine but not sex, circulating leptin, or triiodothyronine

    Johnstone et al., 2005. American Journal of Clinical Nutrition 82(5):941-948.

    Cited in Should you train for your body type?

  66. The wear and tear of 26.2: dermatological injuries reported on marathon day

    Mailler and Adams, 2004. British Journal of Sports Medicine 38(4):498-501.

    Cited in Why you itch while running, and how to prevent it

  67. Physiological and biomechanical adaptations to the cycle to run transition in Olympic triathlon: review and practical recommendations for training

    Millet and Vleck, 2000. British Journal of Sports Medicine 34(5):384-390.

    Cited in Compromised running: why your pace falls apart after HYROX stations

  68. Detraining: loss of training-induced physiological and performance adaptations. Part I: short term insufficient training stimulus

    Mujika and Padilla, 2000. Sports Medicine 30(2):79-87.

    Cited in How often to take the Cooper test, and how fast results change

  69. Fat-free mass index in users and nonusers of anabolic-androgenic steroids

    Kouri et al., 1995. Clinical Journal of Sport Medicine 5(4):223-228.

    Cited in Training for years without the social media body

  70. Prevalence of cholinergic urticaria in young adults

    Zuberbier et al., 1994. Journal of the American Academy of Dermatology 31(6):978-981.

    Cited in Why you itch while running, and how to prevent it

  71. Anaerobic capacity determined by maximal accumulated O2 deficit

    Medbø et al., 1988. Journal of Applied Physiology 64(1):50-60.

    Cited in How anaerobic capacity and VO2max work together

  72. Reduced training intensities and loss of aerobic power, endurance, and cardiac growth

    Hickson et al., 1985. Journal of Applied Physiology 58(2):492-499.

    Cited in How little training keeps your VO2max

  73. Time course of loss of adaptations after stopping prolonged intense endurance training

    Coyle et al., 1984. Journal of Applied Physiology 57(6):1857-1864.

    Cited in How often to take the Cooper test, and how fast results change

  74. Reduced training duration effects on aerobic power, endurance, and cardiac growth

    Hickson et al., 1982. Journal of Applied Physiology 53(1):225-229.

    Cited in How little training keeps your VO2max

  75. Reduced training frequencies and maintenance of increased aerobic power

    Hickson and Rosenkoetter, 1981. Medicine & Science in Sports & Exercise 13(1):13-16.

    Cited in How little training keeps your VO2max

  76. A means of assessing maximal oxygen intake. Correlation between field and treadmill testing

    Cooper, 1968. JAMA 203(3):201-204.

    Cited in What VO2max is, and why it matters

  77. The Varieties of Human Physique: An Introduction to Constitutional Psychology

    Sheldon, 1940. Harper & Brothers, New York.

    Cited in Should you train for your body type?

  78. Heath-Carter Methods of Somatotyping

    Heath-Carter method. Anthropometry and Kinanthropometry, INFLIBNET e-PG Pathshala.

    Cited in Should you train for your body type?

  79. The fitness race: format, stations and weights by division

    HYROX official race format. hyrox.com.

    Cited in What a HYROX race actually demands