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Correcting Vitamin D Insufficiency Improves Some But Not All Aspects of Physical Performance During Winter Training in Taekwondo Athletes

Jung, Hyun Chul, Seo, Myong Won, Lee, Sukho, Jung, Sung Woo, Song, Jong Kook·2018·International Journal of Sport Nutrition and Exercise Metabolism
DOI 10.1123/ijsnem.2017-0412
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Abstract

We investigated the effects of vitamin D 3 supplementation on physical performance during winter training in vitamin D insufficient taekwondo athletes. Thirty-five collegiate male and female taekwondo athletes, aged 19–22 years with low serum 25(OH)D concentration (28.8 ± 1.10 nmol/L), were randomly assigned to a vitamin D group (n = 20) or a placebo group (n = 15). Subjects received either a vitamin D 3 capsule (5,000 IU/day) or a placebo during 4 weeks of winter training. Blood samples were collected for analyzing serum 25(OH)D concentration. Physical performance tests included Wingate anaerobic test, isokinetic muscle strength and endurance, a countermovement jump test, sit-ups, agility test, and 20-m pacer. Serum 25(OH)D concentrations increased significantly in the vitamin D group (96.0 ± 3.77 nmol/L) after 4 weeks of supplementation, but no changes were found in the placebo group (F = 242.44, p = .000). There were significant interaction effects for anaerobic peak power (F = 7.49, p = .010) and isokinetic knee extension at 180 deg/s (F = 6.08, p = .019). Changes in serum 25(OH)D concentration were positively associated with changes in peak power and isokinetic knee extension at 180 deg/s. However, no significant interaction effects were observed in other performance variables. This study suggests that 4 weeks of vitamin D supplementation elevates serum 25(OH)D concentration to sufficient levels. Correcting vitamin D insufficiency improves some but not all aspects of performance. Thus, efficacy of vitamin D supplementation to enhance performance remains unclear.

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Research works printed but not linked: 35

  1. Barker, T., Schneider, E.D., Dixon, B.M., Henriksen, V.T., & Weaver, L.K. (2013). Supplemental vitamin D enhances the recovery in peak isometric force shortly after intense exercise. Nutrition & Metabolism, 10, 69. PubMed ID: 24313936 doi:10.1186/1743-7075-10-69 · DOI
  2. Bischoff-Ferrari, H.A., Dawson-Hughes, B., Staehelin, H.B., Orav, J.E., Stuck, A.E., Theiler, R., . . . Henschkowski, J. (2009). Fall prevention with supplemental and active forms of vitamin D: A meta-analysis of randomised controlled trials. BMJ, 339, 3692. PubMed ID: 19797342 doi:10.1136/bmj.b3692 · DOI · Paper page
  3. Carrillo, A.E., Flynn, M.G., Pinkston, C., Markofski, M.M., Jiang, Y., Donkin, S.S., & Teegarden, D. (2013). Impact of vitamin D supplementation during a resistance training intervention on body composition, muscle function, and glucose tolerance in overweight and obese adults. Clinical Nutrition, 32, 375–381. PubMed ID: 23034474 doi:10.1016/j.clnu.2012.08.014 · DOI
  4. Ceglia, L. (2008). Vitamin D and skeletal muscle tissue and function. Molecular Aspects of Medicine, 29, 407–414. PubMed ID: 18727936 doi:10.1016/j.mam.2008.07.002 · DOI · Paper page
  5. Choi, M., Park, H., Cho, S., & Lee, M. (2013). Vitamin D3 supplementation modulates inflammatory responses from the muscle damage induced by high-intensity exercise in SD rats. Cytokine, 63, 27–35. PubMed ID: 23669253 doi:10.1016/j.cyto.2013.03.018 · DOI
  6. Close, G.L., Leckey, J., Patterson, M., Bradley, W., Owens, D.J., Fraser, W.D., & Morton, J.P. (2013a). The effects of vitamin D3 supplementation on serum total 25[OH]D concentration and physical performance: A randomised dose–response study. British Journal of Sports Medicine, 47, 692–696. doi:10.1136/bjsports-2012-091735 · DOI · Paper page
  7. Cohen, J. (1988). Statistical power analysis for the behavioral sciences (2nd ed.). New York, NY: Academic Press.
  8. Constantini, N.W., Arieli, R., Chodick, G., & Dubnov-Raz, G. (2010). High prevalence of vitamin D insufficiency in athletes and dancers. Clinical Journal of Sport Medicine, 20, 368–371. PubMed ID: 20818195 doi:10.1097/JSM.0b013e3181f207f2 · DOI · Paper page
  9. Dahlquist, D.T., Dieter, B.P., & Koehle, M.S. (2015). Plausible ergogenic effects of vitamin D on athletic performance and recovery. Journal of the International Society of Sports Nutrition, 12, 33. PubMed ID: 26288575 doi:10.1186/s12970-015-0093-8 · DOI · Paper page
  10. Dhesi, J.K., Jackson, S.H., Bearne, L.M., Moniz, C., Hurley, M.V., Swift, C.G., & Allain, T.J. (2004). Vitamin D supplementation improves neuromuscular function in older people who fall. Age and Ageing, 33, 589–595. PubMed ID: 15501836 doi:10.1093/ageing/afh209 · DOI · Paper page
  11. Dubnov-Raz, G., Livne, N., Raz, R., Cohen, A.H., & Constantini, N.W. (2015). Vitamin D supplementation and physical performance in adolescent swimmers. International Journal of Sport Nutrition and Exercise Metabolism, 25, 317–325. PubMed ID: 25203157 doi:10.1123/ijsnem.2014-0180 · DOI · Paper page
  12. Halliday, T.M., Peterson, N.J., Thomas, J.J., Kleppinger, K., Hollis, B.W., & Larson-Meyer, D.E. (2011). Vitamin D status relative to diet, lifestyle, injury, and illness in college athletes. Medicine & Science in Sports & Exercise, 43, 335–343. PubMed ID: 20543748 doi:10.1249/MSS.0b013e3181eb9d4d · DOI
  13. Hamilton, B., Whiteley, R., Farooq, A., & Chalabi, H. (2014). Vitamin D concentration in 342 professional football players and association with lower limb isokinetic function. Journal of Science and Medicine in Sport, 17, 139–143. PubMed ID: 23623203 doi:10.1016/j.jsams.2013.03.006 · DOI · Paper page
  14. He, C.S., Fraser, W.D., Tang, J., Brown, K., Renwick, S., Rudland-Thomas, J., . . . Gleeson, M. (2016). The effect of 14 weeks of vitamin D3 supplementation on antimicrobial peptides and proteins in athletes. Journal of Sports Sciences, 34, 67–74. PubMed ID: 25861808 doi:10.1080/02640414.2015.1033642 · DOI
  15. Institute of Medicine. (2011). Dietary reference intakes for calcium and vitamin D. Washington, DC: The National Academies Press.
  16. Javadian, Y., Adabi, M., Heidari, B., Babaei, M., Firouzjahi, A., Ghahhari, B.Y., & Hajian-Tilaki, K. (2017). Quadriceps muscle strength correlates with serum vitamin D and knee pain in knee osteoarthritis. Clinical Journal of Pain, 33, 67–70. PubMed ID: 26889621 doi:10.1097/AJP.0000000000000358 · DOI
  17. Jung, H.C., Lee, S., Seo, M.W., & Song, J.K. (2017). Isokinetic assessment of agonist and antagonist strength ratios in collegiate taekwondo athletes: A preliminary study. Sport Sciences for Health, 13, 175–181. doi:10.1007/s11332-016-0337-2. · DOI
  18. Kato, T., Terashima, T., Yamashita, T., Hatanaka, Y., Honda, A., & Umemura, Y. (2006). Effect of low-repetition jump training on bone mineral density in young women. Journal of Applied Physiology, 100, 839–843. PubMed ID: 16269526 doi:10.1152/japplphysiol.00666.2005 · DOI
  19. Koundourakis, N.E., Androulakis, N.E., Malliaraki, N., & Margioris, A.N. (2014). Vitamin D and exercise performance in professional soccer players. PloS ONE, 9, e101659. doi:10.1371/journal.pone.0101659. · DOI
  20. Larson-Meyer, D.E., & Willis, K.S. (2010). Vitamin D and athletes. Current Sports Medicine Reports, 9, 220–226. PubMed ID: 20622540 doi:10.1249/JSR.0b013e3181e7dd45 · DOI · Paper page
  21. Lovell, G. (2008). Vitamin D status of females in an elite gymnastics program. Clinical Journal of Sport Medicine, 18, 159–161. PubMed ID: 18332692 doi:10.1097/JSM.0b013e3181650eee · DOI · Paper page
  22. Monks, L., Seo, M.W., Kim, H.B., Jung, H.C., & Song, J.K. (2017). High intensity interval training and athletic performance in Taekwondo athletes. Journal of Sports Medicine and Physical Fitness, 57, 1252–1260. PubMed ID: 28085127
  23. Morton, J.P., Iqbal, Z., Drust, B., Burgess, D., Close, G.L., & Brukner, P.D. (2012). Seasonal variation in vitamin D status in professional soccer players of the English Premier League. Applied Physiology, Nutrition, and Metabolism, 37, 798–802. doi:10.1139/h2012-037. · DOI
  24. Muir, S.W., & Montero-Odasso, M. (2011). Effect of vitamin D supplementation on muscle strength, gait and balance in older adults: A systematic review and meta-analysis. Journal of the American Geriatrics Society, 59, 2291–2300. PubMed ID: 22188076 doi:10.1111/j.1532-5415.2011.03733.x · DOI · Paper page
  25. Nikolaidis, P.T., Chtourou, H., Torres-Luque, G., Tasiopoulos, I.G., Heller, J., & Padulo, J. (2015). Effect of a six-week preparation period on acute physiological responses to a simulated combat in young national-level taekwondo athletes. Journal of Human Kinetics, 47, 115–125. PubMed ID: 26557196 doi:10.1515/hukin-2015-0067 · DOI
  26. Rebolledo, B.J., Bernard, J.A., Werner, B.C., Finlay, A.K., Nwachukwu, B.U., Dare, D.M., . . . Rodeo, S.A. (2018). The association of vitamin D status in lower extremity muscle strains and core muscle injuries at the National Football League Combine. Arthroscopy: The Journal of Arthroscopic and Related Surgery, 34(4):1280–1285. doi:10.1016/j.arthro.2017.10.005 · DOI · Paper page
  27. Ruohola, J.P., Laaksi, I., Ylikomi, T., Haataja, R., Mattila, V.M., Sahi, T., . . . Pihlajamaäki, H. (2006). Association between serum 25(OH)D concentrations and bone stress fractures in Finnish young men. Journal of Bone Mineral Research, 21, 1483–1488. PubMed ID: 16939407 doi:10.1359/jbmr.060607 · DOI · Paper page
  28. Sato, Y., Iwamoto, J., Kanoko, T., & Satoh, K. (2005). Low-dose vitamin D prevents muscular atrophy and reduces falls and hip fractures in women after stroke: A randomized controlled trial. Cerebrovascular Disease, 20, 187–192. doi:10.1159/000087203 · DOI · Paper page
  29. Seo, M.W., Jung, H.C., Song, J.K., & Kim, H.B. (2015). Effect of 8 weeks of pre-season training on body composition, physical fitness, anaerobic capacity, and isokinetic muscle strength in male and female collegiate taekwondo athletes. Journal of Exercise Rehabilitation, 11, 101–107. PubMed ID: 25960983 doi:10.12965/jer.150196 · DOI
  30. Stockton, K., Mengersen, K., Paratz, J.D., Kandiah, D., & Bennell, K.L. (2011). Effect of vitamin D supplementation on muscle strength: A systematic review and meta-analysis. Osteoporosis International, 22, 859–871. PubMed ID: 20924748
  31. Välimäki, V.V., Alfthan, H., Lehmuskallio, E., Loäyttyniemi, E., Sahi, T., Stenman, U.H., . . . Välimäki, M.J. (2004). Vitamin D status as a determinant of peak bone mass in young Finnish men. The Journal of Clinical Endocrinology & Metabolism, 89, 76–80. doi:10.1210/jc.2003-030817 · DOI
  32. Ward, K.A., Das, G., Berry, J.L., Roberts, S.A., Rawer, R., Adams, J.E., & Mughal, Z. (2009). Vitamin D status and muscle function in post-menarcheal adolescent girls. Journal of Clinical Endocrinology Metabolism, 94, 559–563. PubMed ID: 19033372 doi:10.1210/jc.2008-1284 · DOI · Paper page
  33. Wood, T.M., & Zhu, W. (2006). Measurement theory and practice in kinesiology (pp. 28–52). Champaign, IL: Human Kinetics.
  34. Wyon, M.A., Koutedakis, Y., Wolman, R., Nevill, A.M., & Allen, N. (2014). The influence of winter vitamin D supplementation on muscle function and injury occurrence in elite ballet dancers: A controlled study. Journal of Science and Medicine in Sport, 17, 8–12. PubMed ID: 23619160 doi:10.1016/j.jsams.2013.03.007 · DOI · Paper page
  35. Wyon, M.A., Wolman, R., Nevill, A.M., Cloak, R., Metsios, G.S., Gould, D., . . . Koutedakis, Y. (2016). Acute effects of vitamin D3 supplementation on muscle strength in judoka athletes: A randomized placebo-controlled, double-blind trial. Clinical Journal of Sport Medicine, 26, 279–284. PubMed ID: 26535872 doi:10.1097/JSM.0000000000000264 · DOI

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Metadata

Authors
Jung, H. C., Seo, M. W., Lee, S., Jung, S. W., & Song, J. K.
Affiliations
  • University of Louisiana at Monroe
  • Kyung Hee University
  • Texas A&M University-San Antonio
Venue
International Journal of Sport Nutrition and Exercise Metabolism
Publisher
Human Kinetics
Published
2018-11-01
Volume
28
Issue
6
Pages
635-643
ISSN
  • 1526-484X
  • 1543-2742
DOI
10.1123/ijsnem.2017-0412
Cited by
39
References
5

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