{"id":11839,"date":"2025-10-07T16:14:41","date_gmt":"2025-10-07T14:14:41","guid":{"rendered":"https:\/\/athleatcoach.com\/?p=11839"},"modified":"2026-03-24T16:02:32","modified_gmt":"2026-03-24T15:02:32","slug":"deepdive-everything-you-should-know-about-magnesium","status":"publish","type":"post","link":"https:\/\/athleatcoach.com\/en\/deepdive-everything-you-should-know-about-magnesium\/","title":{"rendered":"Magnesium for Athletes: Requirements, Effects, and Supplementation \u2013 Scientifically Explained"},"content":{"rendered":"<h2>Magnesium for Athletes: Requirements, Needs, and Supplementation Scientifically Explained<\/h2>\n<p>Magnesium is an essential mineral and cofactor in over 300 enzymatic reactions in the human body. It plays a central role in processes such as energy metabolism, muscle and nerve function, bone health, and the regulation of the cardiovascular system (<a href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/3282851\/\">1<\/a>). Nevertheless, this does not automatically mean that everyone should supplement with magnesium \u2013 even if this is often suggested on social media.  <\/p>\n<p>&nbsp;<\/p>\n<blockquote>\n<h4><span style=\"color: #006900;\"><em>In this article, you will learn what benefits magnesium truly offers athletes, when supplementation is advisable, and which forms are best absorbed.<\/em><\/span><\/h4>\n<\/blockquote>\n<p>&nbsp;<\/p>\n<h3><span style=\"color: #006900;\"><strong>Physiological Functions of Magnesium<\/strong><\/span><\/h3>\n<p>Magnesium is the second most abundant intracellular cation (positively charged when dissolved in liquid) and is involved in hundreds of vital physiological processes. This includes:<\/p>\n<ul>\n<li><strong>Energy Metabolism:<\/strong> Magnesium stabilizes ATP (Mg-ATP complex) and is thus essential for all ATP-dependent reactions (<strong><a href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/3282851\/\">1<\/a><\/strong>)<\/li>\n<li><strong>Nervous System: <\/strong>Modulates NMDA receptors and promotes inhibitory GABAergic pathways \u2013 thus dampening neuronal hyperexcitability (<strong><a href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/21835188\/\">2<\/a><\/strong>)<\/li>\n<li><strong>Muscle Function:<\/strong> Enables muscle relaxation after contraction and regulates calcium homeostasis (<strong><a href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/3282851\/\">1<\/a><\/strong>)<\/li>\n<li><strong>Bone Health:<\/strong> Approximately 50\u201360% of total magnesium is stored in the skeleton, where it performs structural functions and serves as a reservoir for extracellular Mg balance (<strong><a href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/3282851\/\">1<\/a><\/strong>)<\/li>\n<li><strong>Immune and Cardiovascular System:<\/strong> Acts as a natural calcium channel blocker, influencing vascular tone, heart rhythm, and blood pressure (<strong><a href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/29387426\/\">3<\/a><\/strong>)<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<h3><span style=\"color: #006900;\"><strong> Current Magnesium Recommendations from the German Nutrition Society (DGE)<\/strong><\/span><\/h3>\n<p>The DGE specifies an estimated value of 350 mg\/day for men and 300 mg\/day for women for adults (<strong><a href=\"https:\/\/www.dge.de\/wissenschaft\/referenzwerte\/magnesium\/\">4<\/a><\/strong>). These values are intended to ensure the supply for approximately 97% of the population. Unlike other nutrients, these are not precisely calculated requirement values, but <strong>estimates<\/strong>, as the data available for the exact quantification of requirements is insufficient (<strong><a href=\"https:\/\/www.efsa.europa.eu\/en\/efsajournal\/pub\/4186\">5<\/a><\/strong>). Therefore, the &#8220;exact requirement&#8221; for magnesium cannot yet be determined.   <\/p>\n<p>&nbsp;<\/p>\n<h4><span style=\"color: #006900;\"><strong> How are the reference values established and how should they be interpreted?<\/strong><\/span><\/h4>\n<p>The derivation of reference values typically occurs in three steps:<\/p>\n<ol>\n<li>Determination of average requirements through balance studies (intake vs. excretion)<\/li>\n<li>Safety margins of 10\u201315% or two standard deviations to cover interindividual differences.<\/li>\n<li>Establishment of estimated values when insufficient data are available (<strong><a href=\"https:\/\/www.ernaehrungs-umschau.de\/fileadmin\/Ernaehrungs-Umschau\/pdfs\/pfd_2009\/06_09\/EU06_346_353.qxd.pdf\">6<\/a><\/strong>)<\/li>\n<\/ol>\n<p><img decoding=\"async\" class=\"wp-image-11408 aligncenter lazyload\" data-src=\"https:\/\/athleatcoach.com\/wp-content\/uploads\/\/magnesium-recommended-daily-intake-1024x768.png\" alt=\"\" width=\"667\" height=\"667\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" style=\"--smush-placeholder-width: 667px; --smush-placeholder-aspect-ratio: 667\/667;\"><\/p>\n<h4><span style=\"color: #006900;\"><strong>In the case of magnesium, the following aspects should be considered:<\/strong><\/span><\/h4>\n<ul>\n<li>Serum magnesium is often used as a marker, although it only reflects approximately 1% of the body&#8217;s total magnesium and can fluctuate significantly due to redistribution processes (<strong><a href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/3282851\/\">1<\/a><\/strong>) &#8211; see figure.<\/li>\n<li>Many balance studies have methodological weaknesses: underreporting of intake, high variability in absorption and renal excretion<strong> (<a href=\"https:\/\/www.efsa.europa.eu\/en\/efsajournal\/pub\/4186\">5<\/a>)<\/strong>.<\/li>\n<li>The reference values are designed to prevent deficiency rather than to optimise performance (<a href=\"https:\/\/www.ernaehrungs-umschau.de\/fileadmin\/Ernaehrungs-Umschau\/pdfs\/pfd_2009\/06_09\/EU06_346_353.qxd.pdf\">6<\/a>); therefore, potential additional benefits of higher intake levels are not taken into account. <\/li>\n<\/ul>\n<p><img decoding=\"async\" class=\"wp-image-11409 aligncenter lazyload\" data-src=\"https:\/\/athleatcoach.com\/wp-content\/uploads\/\/magnesium-verteilung-im-koerper-english-1024x768.png\" alt=\"\" width=\"662\" height=\"662\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" style=\"--smush-placeholder-width: 662px; --smush-placeholder-aspect-ratio: 662\/662;\"><\/p>\n<p>Furthermore, the body is capable of redistributing magnesium among different tissues. For example, following exercise, magnesium is mobilized from bone stores to other tissues to compensate for losses or temporarily increased demand in those tissues (<strong><a href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/17172008\/\">7<\/a><\/strong>). Consequently, changes in blood magnesium levels are of limited significance.  <\/p>\n<p>&nbsp;<\/p>\n<h4><span style=\"color: #006900;\"><strong>Magnesium status in Germany<\/strong><\/span><\/h4>\n<p>According to national nutrition surveys, the average magnesium intake in Germany is <strong>323 mg (men)<\/strong> and <strong>237 mg (women)<\/strong> (<strong><a href=\"https:\/\/www.mri.bund.de\/fileadmin\/MRI\/Institute\/EV\/NVSII_Abschlussbericht_Teil_2.pdf\">8<\/a><\/strong>). In comparison: The DGE recommendations are 350 and 300 mg per day for men and women, which means that a large proportion of individuals do not meet the DGE&#8217;s recommended magnesium intake. <\/p>\n<blockquote>\n<h4><em><span style=\"color: #006900;\">Only Approximately <strong>27% of Men<\/strong> and <strong>18% of Women<\/strong> Reach the DGE Reference Values for Magnesium (<a style=\"color: #006900;\" href=\"https:\/\/www.mri.bund.de\/fileadmin\/MRI\/Institute\/EV\/NVSII_Abschlussbericht_Teil_2.pdf\">8<\/a>). <\/span><\/em><\/h4>\n<\/blockquote>\n<p>Unfortunately, the most recent data date back to 2008, and no newer large-scale data on micronutrient supply in Germany are available. <\/p>\n<p>Another factor is the influence of other dietary factors, such as a high intake of calcium, sodium, alcohol, phosphorus (<strong><a href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/29387426\/\" target=\"_blank\" rel=\"noopener\">10<\/a><\/strong>) or caffeine (<strong><a href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/8360789\/\" target=\"_blank\" rel=\"noopener\">11<\/a><\/strong>). These can further worsen magnesium retention and thereby additionally increase the requirement. <\/p>\n<p>Overall, it is therefore not unlikely that the average person consumes too little magnesium. But what about athletes? <\/p>\n<div style=\"background: #f3f7fa; border-left: 4px solid #0073aa; padding: 15px; margin: 20px 0;\">\ud83e\udde9 In our <strong><a href=\"https:\/\/www.athleatcoach.com\/coaching\" target=\"_blank\" rel=\"noopener\">1:1 nutrition coaching<\/a>,<\/strong> we adjust your micronutrient intake individually based on your training load, sweat loss, and dietary habits \u27a1\ufe0f for maximum performance and recovery \ud83d\udd0b\u26a1<\/div>\n<p>&nbsp;<\/p>\n<p><a href=\"https:\/\/athleatcoach.com\/wp-content\/uploads\/Coaching-Broschure_athlEATcoach_0.82025.pdf\"><img decoding=\"async\" class=\"wp-image-11844 aligncenter lazyload\" data-src=\"https:\/\/athleatcoach.com\/wp-content\/uploads\/Werbung-Coaching-Infobroschuere-1024x576.jpg\" alt=\"\" width=\"837\" height=\"471\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" style=\"--smush-placeholder-width: 837px; --smush-placeholder-aspect-ratio: 837\/471;\"><\/a><\/p>\n<p>&nbsp;<\/p>\n<h3><\/h3>\n<h3><span style=\"color: #006900;\"><strong>Magnesium requirements for athletes: Increased needs due to training?<\/strong><\/span><\/h3>\n<p class=\"cvGsUA direction-ltr align-justify para-style-body\"><span class=\"a_GcMg font-feature-liga-off font-feature-clig-off font-feature-calt-off text-decoration-none text-strikethrough-none\">On average, athletes lose approximately 1\u20136 mg of magnesium per liter of sweat, which appears relatively low when compared with reference intakes of about 350 mg per day. Under high-temperature conditions, higher loss rates of up to approximately 15 mg\/L have been reported.  <\/span><span class=\"a_GcMg font-feature-liga-off font-feature-clig-off font-feature-calt-off text-decoration-none text-strikethrough-none\">(<strong><a href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/17172008\/\">12<\/a><\/strong>).<\/span><\/p>\n<p class=\"cvGsUA direction-ltr align-justify para-style-body\"><span class=\"a_GcMg font-feature-liga-off font-feature-clig-off font-feature-calt-off text-decoration-none text-strikethrough-none\">Magnesium is indirectly involved in energy supply processes (glycolysis). For this reason, it is suggested that sport leads to a &#8220;faster depletion&#8221; of magnesium stores.  <\/span><span class=\"a_GcMg font-feature-liga-off font-feature-clig-off font-feature-calt-off text-decoration-none text-strikethrough-none\">However, the magnesium concentration in muscles actually appears to be increased after exercise, while a slight decrease in blood concentration and increased excretion via urine can be observed simultaneously <\/span><span class=\"a_GcMg font-feature-liga-off font-feature-clig-off font-feature-calt-off text-decoration-none text-strikethrough-none\">(<\/span><strong><a class=\"a_GcMg font-feature-liga-off font-feature-clig-off font-feature-calt-off text-decoration-underline text-strikethrough-none\" draggable=\"false\" href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/8076617\/\" target=\"_blank\" rel=\"noopener\">13<\/a><\/strong><span class=\"a_GcMg font-feature-liga-off font-feature-clig-off font-feature-calt-off text-decoration-none text-strikethrough-none\">, <\/span><strong><a class=\"a_GcMg font-feature-liga-off font-feature-clig-off font-feature-calt-off text-decoration-underline text-strikethrough-none\" draggable=\"false\" href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/3558215\/\" target=\"_blank\" rel=\"noopener\">14<\/a><\/strong><span class=\"a_GcMg font-feature-liga-off font-feature-clig-off font-feature-calt-off text-decoration-none text-strikethrough-none\">)<\/span><span class=\"a_GcMg font-feature-liga-off font-feature-clig-off font-feature-calt-off text-decoration-none text-strikethrough-none\">. It is now understood that the observed changes in magnesium levels across various tissues are primarily due to redistribution within the body, with magnesium being shifted to tissues where it is most urgently required. During exercise, this primarily involves skeletal muscle.  <\/span><span class=\"a_GcMg font-feature-liga-off font-feature-clig-off font-feature-calt-off text-decoration-none text-strikethrough-none\">(<\/span><strong><a class=\"a_GcMg font-feature-liga-off font-feature-clig-off font-feature-calt-off text-decoration-underline text-strikethrough-none\" draggable=\"false\" href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/17172008\/\" target=\"_blank\" rel=\"noopener\">12<\/a><\/strong><span class=\"a_GcMg font-feature-liga-off font-feature-clig-off font-feature-calt-off text-decoration-none text-strikethrough-none\">)<\/span><span class=\"a_GcMg font-feature-liga-off font-feature-clig-off font-feature-calt-off text-decoration-none text-strikethrough-none\">. <\/span> <\/p>\n<blockquote>\n<h4 class=\"cvGsUA direction-ltr align-justify para-style-body\"><em><span style=\"color: #006900;\"><span class=\"a_GcMg font-feature-liga-off font-feature-clig-off font-feature-calt-off text-decoration-none text-strikethrough-none\">Overall, it is assumed that the loss through sweat and the increased excretion of magnesium via urine increase the overall requirement by approximately 10-20% <\/span><span class=\"a_GcMg font-feature-liga-off font-feature-clig-off font-feature-calt-off text-decoration-none text-strikethrough-none\">(<\/span><\/span><strong><a class=\"a_GcMg font-feature-liga-off font-feature-clig-off font-feature-calt-off text-decoration-underline text-strikethrough-none\" draggable=\"false\" href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/17172008\/\" target=\"_blank\" rel=\"noopener\">12<\/a><\/strong><span style=\"color: #006900;\"><span class=\"a_GcMg font-feature-liga-off font-feature-clig-off font-feature-calt-off text-decoration-none text-strikethrough-none\">)<\/span><span class=\"a_GcMg font-feature-liga-off font-feature-clig-off font-feature-calt-off text-decoration-none text-strikethrough-none\">.<\/span><\/span><\/em><\/h4>\n<\/blockquote>\n<p class=\"cvGsUA direction-ltr align-justify para-style-body\"><span class=\"a_GcMg font-feature-liga-off font-feature-clig-off font-feature-calt-off text-decoration-none text-strikethrough-none\">However, in this context as well, the optimal magnesium intake has not yet been established. And the previously mentioned influences, such as high calcium or sodium intake, can further increase the requirements.<\/span><\/p>\n<p>&nbsp;<\/p>\n<h3>Magnesium and Stress: an Underestimated Connection?<\/h3>\n<p>An interaction between stress and magnesium is known, though not fully understood. Both acute and chronic stress increase renal magnesium excretion through adrenaline (<strong><a href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/3542342\/\">13<\/a><\/strong>). In this context, the following data are of itnerest:  <\/p>\n<ul>\n<li><span class=\"a_GcMg font-feature-liga-off font-feature-clig-off font-feature-calt-off text-decoration-none text-strikethrough-none\">There is evidence that stress (e.g. in the form of noise) promotes the excretion of magnesium <\/span><span class=\"a_GcMg font-feature-liga-off font-feature-clig-off font-feature-calt-off text-decoration-none text-strikethrough-none\">(<\/span><strong><a class=\"a_GcMg font-feature-liga-off font-feature-clig-off font-feature-calt-off text-decoration-underline text-strikethrough-none\" draggable=\"false\" href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/11235829\/\" target=\"_blank\" rel=\"noopener\">14<\/a><\/strong><span class=\"a_GcMg font-feature-liga-off font-feature-clig-off font-feature-calt-off text-decoration-none text-strikethrough-none\">)<\/span><\/li>\n<li>In students, significantly increased stress levels were found after an exam phase, which correlated with a reduced magnesium concentration in the blood (<strong><a href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/15119699\/\">15<\/a><\/strong>)<\/li>\n<li><span style=\"box-sizing: border-box; margin: 0px; padding: 0px;\">Also in students, a significantly increased excretion of magnesium via urine was found during an exam phase (<strong><a href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/16955721\/\" target=\"_blank\" rel=\"noopener\">16<\/a><\/strong>)<\/span><\/li>\n<\/ul>\n<p>At the same time, magnesium deficiency appears to impair stress resilience, requiring increased activation of the hypothalamic\u2013pituitary\u2013adrenal (HPA) axis to maintain stress regulation. (<strong><a href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/21835188\/\">17<\/a><\/strong>). <span class=\"a_GcMg font-feature-liga-off font-feature-clig-off font-feature-calt-off text-decoration-none text-strikethrough-none\"> <\/span><\/p>\n<p>&nbsp;<\/p>\n<p><span class=\"a_GcMg font-feature-liga-off font-feature-clig-off font-feature-calt-off text-decoration-none text-strikethrough-none\"><strong>Based on these connections, the following hypothesis was formulated:<\/strong><br \/>\nStress \u27a1\ufe0f Magnesium Deficiency \u27a1\ufe0f Stress Resistance Worsens \u27a1\ufe0f More Stress \u27a1\ufe0f Even More Magnesium Excretion.<\/span><\/p>\n<p>&nbsp;<\/p>\n<p><span class=\"a_GcMg font-feature-liga-off font-feature-clig-off font-feature-calt-off text-decoration-none text-strikethrough-none\">This could potentially set up a vicious cycle between magnesium status and stress regulation (<strong><a href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/33260549\/\">18<\/a><\/strong>). Unfortunately, the argument relies primarily on physiological connections, as good intervention studies are lacking<\/span><\/p>\n<div style=\"background: #fdf6e3; border-left: 4px solid #f59e0b; padding: 15px; margin: 20px 0;\"><span style=\"box-sizing: border-box; margin: 0px; padding: 0px;\"><a href=\"https:\/\/www.athleatcoach.com\/podcast\" target=\"_blank\" rel=\"noopener\">Podcast episode (German)<\/a><\/span><\/div>\n<p>&nbsp;<\/p>\n<p><img decoding=\"async\" class=\"wp-image-11410 aligncenter lazyload\" data-src=\"https:\/\/athleatcoach.com\/wp-content\/uploads\/\/magnesium-and-stress-viscious-cycle-2-1024x1024.png\" alt=\"\" width=\"462\" height=\"462\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" style=\"--smush-placeholder-width: 462px; --smush-placeholder-aspect-ratio: 462\/462;\"><\/p>\n<p>&nbsp;<\/p>\n<p>However, there is at least some additional data that provides evidence of the influence of magnesium on stress management. Clinical studies have shown that supplementation with 250\u2013500 mg\/day of magnesium in stressed individuals can lead to a significant reduction in cortisol (<strong><a href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/28670189\/\">19<\/a><\/strong>) or improved heart rate variability (HRV) (<strong><a href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/27933574\/\">20<\/a><\/strong>). Improved stress management and reduced anxiety and depression symptoms were also found in people with latent magnesium deficiency (<strong><a href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/33864354\/\">21<\/a><\/strong>). <\/p>\n<blockquote>\n<h4><em><span style=\"color: #006900;\">Unfortunately this has <\/span><strong>NOT<\/strong> <span style=\"color: #006900;\">been tested in the context of sport or in athletes. Therefore, we do not know how magnesium affects exercise-induced stress. <\/span><\/em><\/h4>\n<\/blockquote>\n<p>It is also worth noting that many studies included only small sample sizes and often did not assess magnesium status objectively at baseline. In addition, the effects in individuals with normal magnesium levels are less clear. Even so, the available data suggest that magnesium plays an important role in stress regulation and should be explored further in larger randomized studies.  <\/p>\n<p>&nbsp;<\/p>\n<h3><span style=\"color: #006900;\"><strong>Magnesium and Sleep Quality<\/strong><\/span><\/h3>\n<p><strong>Magnesium influences sleep on several levels: <\/strong><\/p>\n<ol>\n<li>It was found that rat cortical synaptoneurosomes (parts of synapses responsible for signalling) respond more strongly to the GABA agonist muscimol in the presence of magnesium (<strong><a href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/8113813\/\">22<\/a><\/strong>). <strong data-start=\"829\" data-end=\"837\">GABA<\/strong> is the most important inhibitory neurotransmitter that &#8220;calms&#8221; the brain. Magnesium seems to strengthen GABA\u2019s inhibitory effect.<\/li>\n<li>Glutamate is the main excitatory messenger in the brain. It exerts its effects through <strong>NMDA receptors<\/strong>, which are blocked by magnesium under resting conditions. In this role, magnesium acts like a natural \u201cplug\u201d that helps prevent excessive neural activity. When magnesium levels are low, this blockade becomes weaker, making nerve cells more sensitive and potentially contributing to inner restlessness, tension, and sleep disturbances. (<strong><a href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/6325946\/\">23<\/a><\/strong>).   <\/li>\n<\/ol>\n<p>&nbsp;<\/p>\n<h4><strong>Intervention Studies<\/strong><\/h4>\n<p><span class=\"a_GcMg font-feature-liga-off font-feature-clig-off font-feature-calt-off text-decoration-none text-strikethrough-none\">In two studies with older adults, taking 320 mg <\/span><span class=\"a_GcMg font-feature-liga-off font-feature-clig-off font-feature-calt-off text-decoration-none text-strikethrough-none\">(<\/span><strong><a class=\"a_GcMg font-feature-liga-off font-feature-clig-off font-feature-calt-off text-decoration-underline text-strikethrough-none\" draggable=\"false\" href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/21199787\/\" target=\"_blank\" rel=\"noopener\">24<\/a><\/strong><span class=\"a_GcMg font-feature-liga-off font-feature-clig-off font-feature-calt-off text-decoration-none text-strikethrough-none\">)<\/span><span class=\"a_GcMg font-feature-liga-off font-feature-clig-off font-feature-calt-off text-decoration-none text-strikethrough-none\"> and 500 mg <\/span><span class=\"a_GcMg font-feature-liga-off font-feature-clig-off font-feature-calt-off text-decoration-none text-strikethrough-none\">(<\/span><strong><a class=\"a_GcMg font-feature-liga-off font-feature-clig-off font-feature-calt-off text-decoration-underline text-strikethrough-none\" draggable=\"false\" href=\"https:\/\/pmc.ncbi.nlm.nih.gov\/articles\/PMC3703169\/\" target=\"_blank\" rel=\"noopener\">25<\/a><\/strong><span class=\"a_GcMg font-feature-liga-off font-feature-clig-off font-feature-calt-off text-decoration-none text-strikethrough-none\">)<\/span><span class=\"a_GcMg font-feature-liga-off font-feature-clig-off font-feature-calt-off text-decoration-none text-strikethrough-none\">  magnesium improved the subjective perception of sleep quality. Biomarkers for magnesium supply could also be improved after ingestion. Over a period of 20 days, slow-wave sleep (measured with EEG = gold standard) could be improved in seniors after magnesium intake (<strong><a class=\"a_GcMg font-feature-liga-off font-feature-clig-off font-feature-calt-off text-decoration-underline text-strikethrough-none\" draggable=\"false\" href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/12163983\/\" target=\"_blank\" rel=\"noopener\">26<\/a><\/strong>). Overall,     <\/span><span class=\"a_GcMg font-feature-liga-off font-feature-clig-off font-feature-calt-off text-decoration-none text-strikethrough-none\">The time needed to fall asleep was reduced, sleep duration was prolonged, and overall sleep quality improved. In the EEG study (<strong><a class=\"a_GcMg font-feature-liga-off font-feature-clig-off font-feature-calt-off text-decoration-underline text-strikethrough-none\" draggable=\"false\" href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/12163983\/\" target=\"_blank\" rel=\"noopener\">27<\/a><\/strong>), an increase in slow-wave sleep and a reduction in nocturnal awakenings were also observed\u2014but only in older adults, not in healthy young individuals or athletes.<\/span>   <span class=\"a_GcMg font-feature-liga-off font-feature-clig-off font-feature-calt-off text-decoration-none text-strikethrough-none\">For example, the improved sleep quality in older adults could potentially be due to a previously inadequate magnesium intake, which is often the case  <\/span><span class=\"a_GcMg font-feature-liga-off font-feature-clig-off font-feature-calt-off text-decoration-none text-strikethrough-none\">(<\/span><strong><a class=\"a_GcMg font-feature-liga-off font-feature-clig-off font-feature-calt-off text-decoration-underline text-strikethrough-none\" draggable=\"false\" href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/33573164\/\" target=\"_blank\" rel=\"noopener\">28<\/a><\/strong><span class=\"a_GcMg font-feature-liga-off font-feature-clig-off font-feature-calt-off text-decoration-none text-strikethrough-none\">)<\/span><span class=\"a_GcMg font-feature-liga-off font-feature-clig-off font-feature-calt-off text-decoration-none text-strikethrough-none\">.<\/span><\/p>\n<p>In the only study involving younger adults with sleep problems, subjectively rated sleep quality improved after 21 days of supplementation with 1 g of magnesium threonate. However, no studies have been conducted specifically in athletes, so the relevance of these findings for this target group remains unclear (<strong><a href=\"https:\/\/pmc.ncbi.nlm.nih.gov\/articles\/PMC11381753\/\">29<\/a><\/strong>). <\/p>\n<p>&nbsp;<\/p>\n<h3><span style=\"color: #006900;\"><strong>Magnesium and Athletic Performance<\/strong><\/span><\/h3>\n<p>It is assumed that athletes have a slightly increased requirement of 10-20%. This is primarily due to the increased losses through sweat and the increased metabolic requirements, which lead to an increased &#8220;consumption&#8221; of magnesium, although this thesis is not yet so well documented (<a href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/17172008\/\" target=\"_blank\" rel=\"noopener\"><strong>30<\/strong><\/a>). <\/p>\n<p>Animal studies (<a href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/2484531\/\"><strong>31<\/strong><\/a>) and individual reports from athletes (<a href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/27431550\/\"><strong><em>32<\/em><\/strong><\/a>) suggest that magnesium deficiency may negatively affect muscular performance. In a small pilot study, a targeted reduction in magnesium intake in postmenopausal women led to poorer oxygen delivery and an increased heart rate.(<strong><a href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/11983816\/\">33<\/a><\/strong>).  The potential benefits of magnesium intake above the daily requirements for recovery or athletic performance remain unclear.<\/p>\n<p>Studies on endurance athletes show that supplementation can lower blood pressure during exercise (<strong><a href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/24149738\/\">34<\/a><\/strong>). Other studies report less muscle soreness (DOMS) and lower CK levels (a marker for muscle damage) after intense exercise (<strong><a href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/31624951\/\">33<\/a><\/strong>), but other studies have not been able to confirm the positive observations (<strong><a href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/38970118\/\">35<\/a><\/strong>). And that&#8217;s more or less all the data we currently have on the topic of &#8220;magnesium supplementation for athletes.&#8221; Overall, the evidence is weak and insufficient to draw definite conclusions. At present, there is <strong>no clear evidence<\/strong> that magnesium supplementation improves athletic performance in healthy athletes, particularly when adequate intake is already achieved through a balanced diet.<\/p>\n<p>&nbsp;<\/p>\n<h3><span style=\"color: #006900;\"><strong>Bioavailability of Different Magnesium Forms<\/strong><\/span><\/h3>\n<p class=\"cvGsUA direction-ltr align-justify para-style-body\"><span class=\"a_GcMg font-feature-liga-off font-feature-clig-off font-feature-calt-off text-decoration-none text-strikethrough-none\">Magnesium oxide, despite its high elemental content, is only absorbed to about 3\u20135%, which is due to its low solubility (<strong><a href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/2407766\/\">36<\/a><\/strong><\/span><span class=\"a_GcMg font-feature-liga-off font-feature-clig-off font-feature-calt-off text-decoration-none text-strikethrough-none\">), while organic compounds such as magnesium citrate achieve a significantly higher absorption of about 25\u201330% and show correspondingly higher serum and urine levels (<strong><a href=\"https:\/\/link.springer.com\/article\/10.1186\/s40795-016-0121-3\">37<\/a><\/strong><\/span><span class=\"a_GcMg font-feature-liga-off font-feature-clig-off font-feature-calt-off text-decoration-none text-strikethrough-none\">); chelated forms like magnesium bisglycinate are in a similar range of about 20\u201330% (<strong><a href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/7815675\/\">38<\/a><\/strong>), presumably due to the use of amino acid-bound transport mechanisms. There are patented formulations, such as Sucrosomial\u00ae, which can normally be absorbed better with a bioavailability of around 30\u201340% (<strong><a href=\"https:\/\/www.mdpi.com\/2072-6643\/14\/24\/5235\">39<\/a><\/strong>). Many believe that effervescent tablets are inherently poor and not well absorbed, which is not true. Firstly, they often consist of magnesium carbonate and not magnesium oxide, and secondly, the effervescent tablet form is sometimes even better absorbed than conventional hard capsules (<strong><a href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/20862466\/\">40<\/a><\/strong>).   <\/span><\/p>\n<ul>\n<li><span class=\"a_GcMg font-feature-liga-off font-feature-clig-off font-feature-calt-off text-decoration-none text-strikethrough-none\">Magnesium oxide is absorbed comparatively poorly despite its high elemental content<\/span><\/li>\n<li><span class=\"a_GcMg text-decoration-none text-strikethrough-none font-feature-liga-off font-feature-clig-off font-feature-calt-off\">Magnesium citrate and other organic salts show significantly better absorption parameters.<\/span><\/li>\n<li><span class=\"a_GcMg text-decoration-none text-strikethrough-none font-feature-liga-off font-feature-clig-off font-feature-calt-off\">Modern or chelated forms such as Sucrosomial\u00ae Magnesium or Bisglycinate can further improve absorption &#8211; however, the benefits are less significant than many assume<\/span><\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<table style=\"width: 100%; border-collapse: collapse; height: 426px;\">\n<thead>\n<tr style=\"background-color: #f3f4f6;\">\n<th style=\"padding: 10px; border: 1px solid #dddddd; height: 23px;\">Magnesium Compound<\/th>\n<th style=\"padding: 10px; border: 1px solid #dddddd; height: 23px;\">Properties<\/th>\n<th style=\"padding: 10px; border: 1px solid #dddddd; height: 23px;\">Studies &amp; Sources<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr style=\"height: 47px;\">\n<td style=\"padding: 10px; border: 1px solid #dddddd; height: 47px;\"><strong>Magnesium Oxide (MgO)<\/strong><\/td>\n<td style=\"padding: 10px; border: 1px solid #dddddd; height: 47px;\">\n<ul>\n<li>High elemental magnesium content, but poor solubility and absorption (~4%).<\/li>\n<\/ul>\n<\/td>\n<td style=\"padding: 10px; border: 1px solid #dddddd; height: 47px;\">Firoz &amp; Graber (2001): <a href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/11794633\/\" target=\"_blank\" rel=\"noopener noreferrer\">[36]<\/a><\/td>\n<\/tr>\n<tr style=\"height: 95px;\">\n<td style=\"padding: 10px; border: 1px solid #dddddd; height: 95px;\"><strong>Magnesium Citrate<\/strong><\/td>\n<td style=\"padding: 10px; border: 1px solid #dddddd; height: 95px;\">\n<ul>\n<li>Good solubility and 30\u201340% better absorption than MgO.<\/li>\n<li>Good study data; can have a laxative effect in high doses.<\/li>\n<\/ul>\n<\/td>\n<td style=\"padding: 10px; border: 1px solid #dddddd; height: 95px;\">Walker et al. (2003): <a href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/14596323\/\" target=\"_blank\" rel=\"noopener noreferrer\">[37]<\/a><br \/>\nKappeler et al. (2017): <a href=\"https:\/\/link.springer.com\/article\/10.1186\/s40795-016-0121-3\" target=\"_blank\" rel=\"noopener noreferrer\">[39]<\/a>  <\/td>\n<\/tr>\n<tr style=\"height: 47px;\">\n<td style=\"padding: 10px; border: 1px solid #dddddd; height: 47px;\"><strong>Magnesium Chloride, Lactate, Aspartate<\/strong><\/td>\n<td style=\"padding: 10px; border: 1px solid #dddddd; height: 47px;\">\n<ul>\n<li>Higher bioavailability than MgO<\/li>\n<li>Good alternatives to citrate, but less common commercially.<\/li>\n<\/ul>\n<\/td>\n<td style=\"padding: 10px; border: 1px solid #dddddd; height: 47px;\">Lindberg et al. (1990): <a href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/2407766\/\" target=\"_blank\" rel=\"noopener noreferrer\">[40]<\/a> <\/td>\n<\/tr>\n<tr style=\"height: 95px;\">\n<td style=\"padding: 10px; border: 1px solid #dddddd; height: 95px;\"><strong>Magnesium Glycinate \/ Diglycinate<\/strong><\/td>\n<td style=\"padding: 10px; border: 1px solid #dddddd; height: 95px;\">\n<ul>\n<li>High tolerability and very good absorption. In one study, better absorption than Mg-citrate. In another study, nearly identical bioavailability.  <\/li>\n<li>Utilization of peptide transporters could facilitate absorption.<\/li>\n<\/ul>\n<\/td>\n<td style=\"padding: 10px; border: 1px solid #dddddd; height: 95px;\">Schuette et al. (1994): <a href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/7815675\/\" target=\"_blank\" rel=\"noopener noreferrer\">[41]<\/a><br \/>\nAtes (2019): <a href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/30761462\/\" target=\"_blank\" rel=\"noopener noreferrer\">[42]<\/a> <\/td>\n<\/tr>\n<tr style=\"height: 24px;\">\n<td style=\"padding: 10px; border: 1px solid #dddddd; height: 24px;\"><strong>Magnesium Malate, Acetyltaurate, Sulfate<\/strong><\/td>\n<td style=\"padding: 10px; border: 1px solid #dddddd; height: 24px;\">\n<ul>\n<li>Animal studies show better tissue distribution for malate and acetyl taurate.<\/li>\n<li>Sulfate is often used intravenously; orally, it is strongly laxative.<\/li>\n<\/ul>\n<\/td>\n<td style=\"padding: 10px; border: 1px solid #dddddd; height: 24px;\">Moreira et al. (2018): <a href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/29625689\/\" target=\"_blank\" rel=\"noopener noreferrer\">[43]<\/a> <\/td>\n<\/tr>\n<tr style=\"height: 95px;\">\n<td style=\"padding: 10px; border: 1px solid #dddddd; height: 95px;\"><strong>Magnesium L-Threonate<\/strong><\/td>\n<td style=\"padding: 10px; border: 1px solid #dddddd; height: 95px;\">\n<ul>\n<li>Increases magnesium concentration in the brain in animal models.<\/li>\n<li>First RCT study shows possible improvements in sleep quality. Poorer bioavailability than magnesium citrate. <\/li>\n<\/ul>\n<\/td>\n<td style=\"padding: 10px; border: 1px solid #dddddd; height: 95px;\">Zhang et al. (2024): <a href=\"https:\/\/www.mdpi.com\/2072-6643\/14\/24\/5235\" target=\"_blank\" rel=\"noopener noreferrer\">[44]<\/a><br \/>\nHausenblas et al. (2024): <a href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/39252819\/\" target=\"_blank\" rel=\"noopener noreferrer\">[45]<\/a>  <\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<h3><span style=\"color: #006900;\"><strong>Conclusion<\/strong><\/span><\/h3>\n<ul>\n<li>Magnesium is involved in numerous important physiological processes and plays a central role in health and performance.<\/li>\n<li>However, this does not automatically mean that everyone should supplement with magnesium.<\/li>\n<li>What matters most is the balance between dietary intake and individual requirements, which may be higher during chronic stress or intense physical exertion.<\/li>\n<li>Studies demonstrate positive effects of additional magnesium supplementation, especially in connection with stress management and sleep quality; however, this is almost exclusively in older individuals with inadequate initial care.<\/li>\n<li>It is currently unclear whether regular magnesium supplementation provides additional benefits when nutrient intake is already adequate.<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Magnesium for athletes: Hype or help? Evidence-based guidance and practical tips. <\/p>\n","protected":false},"author":5,"featured_media":11841,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_et_pb_use_builder":"","_et_pb_old_content":"","_et_gb_content_width":"","footnotes":""},"categories":[346],"tags":[320,321,318,319,316,317,315],"class_list":["post-11839","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-scientific-deepdive","tag-magnesium","tag-magnesium-for-athletes","tag-magnesium-for-better-sleep","tag-magnesium-requirements-for-athletes","tag-recovery","tag-sleep-2","tag-supplements-for-athletes"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Magnesium for Athletes: Requirements, Effects, and Supplementation \u2013 Scientifically Explained - athlEATcoach | Sports Nutrition<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/athleatcoach.com\/en\/deepdive-everything-you-should-know-about-magnesium\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Magnesium for Athletes: Requirements, Effects, and Supplementation \u2013 Scientifically Explained - athlEATcoach | Sports Nutrition\" \/>\n<meta property=\"og:description\" content=\"Magnesium for athletes: Hype or help? 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