Medical Sports Nutrition

• #40 - Does coffee slow you down if you have the wrong genetics?

  Send us a textIn this episode we saunter through a vitamin D guideline that provides a super summary resource, we look at why genetic testing for caffeine may be available for 'normal' athletes sooner than you think, and realise again how gender biased Sports nutrition research is.This is the last show in this series. I do hope to have another series soon. Thank you to anyone listening. I hope you have enjoyed this as much as I have.Zhou Y, Guo X, Liu Z, Sun D, Liang Y, Shen H, Li X, Mu J, Liu J, Cao G, Chen M. 6-week time-restricted eating improves body composition, maintains exercise performance, without exacerbating eating disorder in female DanceSport dancers. J Int Soc Sports Nutr. 2024 Dec;21(1):2369613. doi: 10.1080/15502783.2024.2369613. Epub 2024 Jun 21. PMID: 38904148; PMCID: PMC11195454.Loftfield E, O'Connell CP, Abnet CC, Graubard BI, Liao LM, Beane Freeman LE, Hofmann JN, Freedman ND, Sinha R. Multivitamin Use and Mortality Risk in 3 Prospective US Cohorts. JAMA Netw Open. 2024 Jun 3;7(6):e2418729. doi: 10.1001/jamanetworkopen.2024.18729. PMID: 38922615; PMCID: PMC11208972.Ineichen BV, Furrer E, Grüninger SL, Zürrer WE, Macleod MR. Analysis of animal-to-human translation shows that only 5% of animal-tested therapeutic interventions obtain regulatory approval for human applications. PLoS Biol. 2024 Jun 13;22(6):e3002667. doi: 10.1371/journal.pbio.3002667. PMID: 38870090; PMCID: PMC11175415.Demay MB, Pittas AG, Bikle DD, Diab DL, Kiely ME, Lazaretti-Castro M, Lips P, Mitchell DM, Murad MH, Powers S, Rao SD, Scragg R, Tayek JA, Valent AM, Walsh JME, McCartney CR. Vitamin D for the Prevention of Disease: An Endocrine Society Clinical Practice Guideline. J Clin Endocrinol Metab. 2024 Jul 12;109(8):1907-1947. doi: 10.1210/clinem/dgae290. PMID: 38828931.Aragon AA, Schoenfeld BJ, Wildman R, Kleiner S, VanDusseldorp T, Taylor L, Earnest CP, Arciero PJ, Wilborn C, Kalman DS, Stout JR, Willoughby DS, Campbell B, Arent SM, Bannock L, Smith-Ryan AE, Antonio J. International society of sports nutrition position stand: diets and body composition. J Int Soc Sports Nutr. 2017 Jun 14;14:16. doi: 10.1186/s12970-017-0174-y. PMID: 28630601; PMCID: PMC5470183.Barreto G, Esteves GP, Marticorena F, Oliveira TN, Grgic J, Saunders B. Caffeine, CYP1A2 Genotype, and Exercise Performance: A Systematic Review and Meta-anaThis podcast is a lighthearted review of the medical literature and Dr Matheson has enormous respect for all scientific researchers and could not do a job as hard as theirs. The information presented is the personal opinion of the healthcare professional and is not a substitute for seeking professional advice. It is based on interpretation of current best practice and guidelines when the episode was recorded. Guidelines can change; To the best of our knowledge the information in this episode is up to date as of it’s release but it is the listeners responsibility to review the information and make sure it is still up to date when they listen. Dr Matheson is not liable for any advice, investigations, course of treatment, diagnosis or any other information, services or products listeners might pursue as a result of listening to this podcast. Reliance on information provided in this podcast is solely at the listeners risk. The podcast is designed to be used generate learning discussions and for education only. It is not recommended to be used as a method of diagnosis, opinion, treatment or medical advice for the general public. Do not delay seeking medical advice based on the information contained in this podcast. If you have questions regarding your health or feel you may have a medical condition then promptly seek the opinion of a trained healthcare professional.

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  19:54
• #39 - That Zoe study publication. Do additives such as emulsifiers give you diabetes?

  Send us a textIn this episode we look at the results in Nature Medicine of the Zoe study and think about what might have made it a stronger paper and what questions are still not answered. We talk about an antibiotic cream that may prevent viral infections and finally a Nutri-sante cohort study that shows the potential dangers of emulsifiers, which are a very common ingredient in many of our common sports supplements.Podcast 39Mao T, Kim J, Peña-Hernández MA, Valle G, Moriyama M, Luyten S, Ott IM, Gomez-Calvo ML, Gehlhausen JR, Baker E, Israelow B, Slade M, Sharma L, Liu W, Ryu C, Korde A, Lee CJ, Silva Monteiro V, Lucas C, Dong H, Yang Y; Yale SARS-CoV-2 Genomic Surveillance Initiative; Gopinath S, Wilen CB, Palm N, Dela Cruz CS, Iwasaki A. Intranasal neomycin evokes broad-spectrum antiviral immunity in the upper respiratory tract. Proc Natl Acad Sci U S A. 2024 Apr 30;121(18):e2319566121. doi: 10.1073/pnas.2319566121. Epub 2024 Apr 22. PMID: 38648490; PMCID: PMC11067057.Salame C, Javaux G, Sellem L, Viennois E, de Edelenyi FS, Agaësse C, De Sa A, Huybrechts I, Pierre F, Coumoul X, Julia C, Kesse-Guyot E, Allès B, Fezeu LK, Hercberg S, Deschasaux-Tanguy M, Cosson E, Tatulashvili S, Chassaing B, Srour B, Touvier M. Food additive emulsifiers and the risk of type 2 diabetes: analysis of data from the NutriNet-Santé prospective cohort study. Lancet Diabetes Endocrinol. 2024 May;12(5):339-349. doi: 10.1016/S2213-8587(24)00086-X. PMID: 38663950.Bermingham KM, Linenberg I, Polidori L, Asnicar F, Arrè A, Wolf J, Badri F, Bernard H, Capdevila J, Bulsiewicz WJ, Gardner CD, Ordovas JM, Davies R, Hadjigeorgiou G, Hall WL, Delahanty LM, Valdes AM, Segata N, Spector TD, Berry SE. Effects of a personalized nutrition program on cardiometabolic health: a randomized controlled trial. Nat Med. 2024 May 8. doi: 10.1038/s41591-024-02951-6. Epub ahead of print. PMID: 38714898.https://usrtk.org/industry-pr/science-media-centre/https://www.sciencemediacentre.org/expert-reaction-to-study-looking-at-emulsifiers-and-type-2-diabetes/This podcast is a lighthearted review of the medical literature and Dr Matheson has enormous respect for all scientific researchers and could not do a job as hard as theirs. The information presented is the personal opinion of the healthcare professional and is not a substitute for seeking professional advice. It is based on interpretation of current best practice and guidelines when the episode was recorded. Guidelines can change; To the best of our knowledge the information in this episode is up to date as of it’s release but it is the listeners responsibility to review the information and make sure it is still up to date when they listen. Dr Matheson is not liable for any advice, investigations, course of treatment, diagnosis or any other information, services or products listeners might pursue as a result of listening to this podcast. Reliance on information provided in this podcast is solely at the listeners risk. The podcast is designed to be used generate learning discussions and for education only. It is not recommended to be used as a method of diagnosis, opinion, treatment or medical advice for the general public. Do not delay seeking medical advice based on the information contained in this podcast. If you have questions regarding your health or feel you may have a medical condition then promptly seek the opinion of a trained healthcare professional.

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  19:35
• #38 - Hot water or cold water immersion for athletic performance?

  Send us a textWhat difference will 500m make to the ideal physiology for a rower. When should you go for cold immersion and when hot. Is training harder if you are on the hormonal contraceptive pill. Could that be a good thing. We skip through these and other questions trying to see if anything is clear or as muddy as a cold tub after a rugby team had been through it.Ref:Nash E, Nicoll A, Batt N, George J, Perananthan V, Prince D, Wallace M, Gow P, Vaz K, Chitturi S, Flores JE, Braund A, Bonnichsen M, Riordan S, Humphris J, Duong T, McKenzie C, Liu K, Strasser SI. Drug-induced liver injury from selective androgen receptor modulators, anabolic-androgenic steroids and bodybuilding supplements in Australia. Aliment Pharmacol Ther. 2024 Apr;59(8):953-961. doi: 10.1111/apt.17906. Epub 2024 Feb 19. PMID: 38372012.Thorpe RT. Post-exercise Recovery: Cooling and Heating, a Periodized Approach. Front Sports Act Living. 2021 Sep 1;3:707503. doi: 10.3389/fspor.2021.707503. PMID: 34541521; PMCID: PMC8440788.Astridge DJ, Peeling P, Goods PSR, Girard O, Watts SP, Dennis MC, Binnie MJ. Shifting the Energy Toward Los Angeles: Comparing the Energetic Contribution and Pacing Approach Between 2000- and 1500-m Maximal Ergometer Rowing. Int J Sports Physiol Perform. 2023 Nov 28;19(2):133-141. doi: 10.1123/ijspp.2023-0216. PMID: 38016454.Sautillet B, Bourdillon N, Millet GP, Lemaître F, Cozette M, Delanaud S, Ahmaïdi S, Costalat G. Hot water immersion: Maintaining core body temperature above 38.5°C mitigates muscle fatigue. Scand J Med Sci Sports. 2024 Jan;34(1):e14503. doi: 10.1111/sms.14503. Epub 2023 Sep 25. PMID: 37747708.Bischof K, Stafilidis S, Bundschuh L, Oesser S, Baca A, König D. Influence of specific collagen peptides and 12-week concurrent training on recovery-related biomechanical characteristics following exercise-induced muscle damage-A randomized controlled trial. Front Nutr. 2023 Nov 16;10:1266056. doi: 10.3389/fnut.2023.1266056. PMID: 38035363; PMCID: PMC10687431.Oxfeldt M, Pedersen AB, Hørmann D, Lind JH, Larsen EB, Aagaard P, Hansen M. Influence of Second-Generation Oral Contraceptives on Muscle Recovery after Repeated Resistance Exercise in Trained Females. Med Sci Sports Exerc. 2024 Mar 1;56(3):499-510. doi: 10.1249/MSS.0000000000003316. Epub 2023 Oct 11. PMID: 38356164.Windfeld-Mathiasen J, Heerfordt IM, DalhoThis podcast is a lighthearted review of the medical literature and Dr Matheson has enormous respect for all scientific researchers and could not do a job as hard as theirs. The information presented is the personal opinion of the healthcare professional and is not a substitute for seeking professional advice. It is based on interpretation of current best practice and guidelines when the episode was recorded. Guidelines can change; To the best of our knowledge the information in this episode is up to date as of it’s release but it is the listeners responsibility to review the information and make sure it is still up to date when they listen. Dr Matheson is not liable for any advice, investigations, course of treatment, diagnosis or any other information, services or products listeners might pursue as a result of listening to this podcast. Reliance on information provided in this podcast is solely at the listeners risk. The podcast is designed to be used generate learning discussions and for education only. It is not recommended to be used as a method of diagnosis, opinion, treatment or medical advice for the general public. Do not delay seeking medical advice based on the information contained in this podcast. If you have questions regarding your health or feel you may have a medical condition then promptly seek the opinion of a trained healthcare professional.

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  18:26
• #37 - Sleep - how long to nap, the impact of shared rooms and poor sleep causing infections

  Send us a textIn this episode we review a mix of sleep and menstrual cycle articles. We look at the impact of sleep on viral infections, the right length of naps and the impact of sharing rooms. Then studies looking at injuries in different stages of the cycle and confirmation that it is still not something that is discussed as openly as needed. Podcast 37Radke J, Meinhardt J, Aschman T, Chua RL, Farztdinov V, Lukassen S, Ten FW, Friebel E, Ishaque N, Franz J, Huhle VH, Mothes R, Peters K, Thomas C, Schneeberger S, Schumann E, Kawelke L, Jünger J, Horst V, Streit S, von Manitius R, Körtvélyessy P, Vielhaber S, Reinhold D, Hauser AE, Osterloh A, Enghard P, Ihlow J, Elezkurtaj S, Horst D, Kurth F, Müller MA, Gassen NC, Melchert J, Jechow K, Timmermann B, Fernandez-Zapata C, Böttcher C, Stenzel W, Krüger E, Landthaler M, Wyler E, Corman V, Stadelmann C, Ralser M, Eils R, Heppner FL, Mülleder M, Conrad C, Radbruch H. Proteomic and transcriptomic profiling of brainstem, cerebellum and olfactory tissues in early- and late-phase COVID-19. Nat Neurosci. 2024 Feb 16. doi: 10.1038/s41593-024-01573-y. Epub ahead of print. PMID: 38366144.Costa JA, Figueiredo P, Lastella M, Nakamura FY, Guilherme J, Brito J. Comparing Sleep in Shared and Individual Rooms During Training Camps in Elite Youth Soccer Players: A Short Report. J Athl Train. 2023 Jan 1;58(1):79-83. doi: 10.4085/1062-6050-0042.22. PMID: 35380678; PMCID: PMC9913052.Mesas AE, Núñez de Arenas-Arroyo S, Martinez-Vizcaino V, Garrido-Miguel M, Fernández-Rodríguez R, Bizzozero-Peroni B, Torres-Costoso AI. Is daytime napping an effective strategy to improve sport-related cognitive and physical performance and reduce fatigue? A systematic review and meta-analysis of randomised controlled trials. Br J Sports Med. 2023 Apr;57(7):417-426. doi: 10.1136/bjsports-2022-106355. Epub 2023 Jan 23. PMID: 36690376.Walsh NP, Kashi DS, Edwards JP, Richmond C, Oliver SJ, Roberts R, Izard RM, Jackson S, Greeves JP. Good perceived sleep quality protects against the raised risk of respiratory infection during sleep restriction in young adults. Sleep. 2023 Jan 11;46(1):zsac222. doi: 10.1093/sleep/zsac222. PMID: 36112383; PMCID: PMC9832516.Wynne-Ellis MM, Mursu JJ, Tuomainen TP, Bertone-Johnson E, Salonen JT, Virtanen JK. Dietary fat quality and serum androgen concentrations in middle-aged men. Eur J Clin NuThis podcast is a lighthearted review of the medical literature and Dr Matheson has enormous respect for all scientific researchers and could not do a job as hard as theirs. The information presented is the personal opinion of the healthcare professional and is not a substitute for seeking professional advice. It is based on interpretation of current best practice and guidelines when the episode was recorded. Guidelines can change; To the best of our knowledge the information in this episode is up to date as of it’s release but it is the listeners responsibility to review the information and make sure it is still up to date when they listen. Dr Matheson is not liable for any advice, investigations, course of treatment, diagnosis or any other information, services or products listeners might pursue as a result of listening to this podcast. Reliance on information provided in this podcast is solely at the listeners risk. The podcast is designed to be used generate learning discussions and for education only. It is not recommended to be used as a method of diagnosis, opinion, treatment or medical advice for the general public. Do not delay seeking medical advice based on the information contained in this podcast. If you have questions regarding your health or feel you may have a medical condition then promptly seek the opinion of a trained healthcare professional.

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  17:12
• #36 - Problems with the accuracy of social media nutrition advice (this podcast clearly the exception)

  Send us a textIn this episode we review an article by a group of dieticians saying that youtube videos by non-dieticans are of poor quality, look into the world of the Alkaline diet, and get an update on an exciting biomarker for the Med Diet.Podcast 36Kiss A, Soós S, Temesi Á, Unger-Plasek B, Lakner Z, Tompa O. Evaluation of the reliability and educational quality of YouTube™ videos on sport nutrition topics. J Int Soc Sports Nutr. 2023 Dec;20(1):2278632. doi: 10.1080/15502783.2023.2278632. Epub 2023 Nov 12. PMID: 37953602; PMCID: PMC10653641.Knapik JJ, Trone DW, Steelman RA, Farina EK, Lieberman HR. Prevalence and adverse effects of sport-related nutritional supplements (sport drinks, bars, and gels) in the military before and during the COVID-19 pandemic: the US Military Dietary Supplement Use Study. J Int Soc Sports Nutr. 2023 Dec;20(1):2277246. doi: 10.1080/15502783.2023.2277246. Epub 2023 Nov 10. PMID: 37947831; PMCID: PMC10653656.Yalcinkaya N, Isik O, Beyleroglu M, Erdogdu D, Cicek G, Novak D. Effects of 8-week alkaline diet and aerobic exercise on body composition, aerobic performance, and lipid profiles in sedentary women. Front Nutr. 2024 Jan 4;10:1339874. doi: 10.3389/fnut.2023.1339874. PMID: 38239837; PMCID: PMC10794351.Sobiecki JG, Imamura F, Davis CR, Sharp SJ, Koulman A, Hodgson JM, Guevara M, Schulze MB, Zheng JS, Agnoli C, Bonet C, Colorado-Yohar SM, Fagherazzi G, Franks PW, Gundersen TE, Jannasch F, Kaaks R, Katzke V, Molina-Montes E, Nilsson PM, Palli D, Panico S, Papier K, Rolandsson O, Sacerdote C, Tjønneland A, Tong TYN, van der Schouw YT, Danesh J, Butterworth AS, Riboli E, Murphy KJ, Wareham NJ, Forouhi NG. A nutritional biomarker score of the Mediterranean diet and incident type 2 diabetes: Integrated analysis of data from the MedLey randomised controlled trial and the EPIC-InterAct case-cohort study. PLoS Med. 2023 Apr 27;20(4):e1004221. doi: 10.1371/journal.pmed.1004221. PMID: 37104291; PMCID: PMC10138823.https://www.weightwatchers.com/us/blog/weight-loss/alkaline-diethttps://www.mrc-epid.cam.ac.uk/blog/2023/04/27/biomarkers-health-benefits-mediterranean-diet/This podcast is a lighthearted review of the medical literature and Dr Matheson has enormous respect for all scientific researchers and could not do a job as hard as theirs. The information presented is the personal opinion of the healthcare professional and is not a substitute for seeking professional advice. It is based on interpretation of current best practice and guidelines when the episode was recorded. Guidelines can change; To the best of our knowledge the information in this episode is up to date as of it’s release but it is the listeners responsibility to review the information and make sure it is still up to date when they listen. Dr Matheson is not liable for any advice, investigations, course of treatment, diagnosis or any other information, services or products listeners might pursue as a result of listening to this podcast. Reliance on information provided in this podcast is solely at the listeners risk. The podcast is designed to be used generate learning discussions and for education only. It is not recommended to be used as a method of diagnosis, opinion, treatment or medical advice for the general public. Do not delay seeking medical advice based on the information contained in this podcast. If you have questions regarding your health or feel you may have a medical condition then promptly seek the opinion of a trained healthcare professional.

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