[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"article-en-2026-05-20-mas-plateau-how-to-break-through":3},{"article":4,"alternates":976},{"_id":5,"filename":6,"_path":7,"title":8,"description":9,"image":10,"category":11,"author":12,"date":13,"featured":14,"published":14,"lang":15,"translationKey":16,"body":17},"6a2ee69600ac93cebc81ce66","articles:2026-05-20-mas-plateau-how-to-break-through.en.md","\u002Farticles\u002Farticles:2026-05-20-mas-plateau-how-to-break-through.en","MAS Plateau: Why You're Stuck and How to Get Faster Again","Stuck at the same MAS despite all those interval sessions? Discover the 7 most common causes of a MAS plateau and the concrete levers to start progressing again.","https:\u002F\u002Fimages.unsplash.com\u002Fphoto-1502904550040-7534597429ae?auto=format&fit=crop&q=80&w=2000","Training","RunRun","2026-05-20",true,"en","plateau-vma-relancer-progression",{"type":18,"children":19},"root",[20,28,34,39,46,59,66,101,106,112,117,140,152,157,190,204,210,222,245,257,262,308,314,326,331,363,372,378,390,402,407,448,454,465,470,513,519,524,529,562,568,573,789,797,803,837,843,848,888,900,906,911,923,927,933],{"type":21,"tag":22,"props":23,"children":25},"element","h1",{"id":24},"mas-plateau-why-youre-stuck-and-how-to-get-faster-again",[26],{"type":27,"value":8},"text",{"type":21,"tag":29,"props":30,"children":31},"p",{},[32],{"type":27,"value":33},"You do your interval sessions every week, you follow the plan to the letter, but your latest test shows the same MAS as six months ago. Worse: you sometimes feel less sharp than last year on your 30\u002F30s. Welcome to the MAS plateau — an almost universal phase for any runner who has already digested those first years of rapid progression.",{"type":21,"tag":29,"props":35,"children":36},{},[37],{"type":27,"value":38},"The good news is that stagnation is almost never a genetic ceiling. In 9 cases out of 10, the plateau comes from an imbalance in training, not a physiological limit. Here are the 7 most common causes — and the concrete levers to get moving upward again.",{"type":21,"tag":40,"props":41,"children":43},"h2",{"id":42},"_1-you-always-do-the-same-mas-session",[44],{"type":27,"value":45},"1) You always do the same MAS session",{"type":21,"tag":29,"props":47,"children":48},{},[49,51,57],{"type":27,"value":50},"That's trap number one. You found a session that \"works\" (10×400 m for example), you pull it out every week, and after 8 to 12 weeks your body is no longer stimulated. The aerobic system progresses through ",{"type":21,"tag":52,"props":53,"children":54},"strong",{},[55],{"type":27,"value":56},"adaptation to a new constraint",{"type":27,"value":58}," — when the constraint becomes routine, the adaptation stops.",{"type":21,"tag":60,"props":61,"children":63},"h3",{"id":62},"how-to-break-out",[64],{"type":27,"value":65},"How to break out",{"type":21,"tag":67,"props":68,"children":69},"ul",{},[70,81,91],{"type":21,"tag":71,"props":72,"children":73},"li",{},[74,79],{"type":21,"tag":52,"props":75,"children":76},{},[77],{"type":27,"value":78},"Vary the interval duration",{"type":27,"value":80}," over a 4 to 6 week cycle: alternate short MAS (200–400 m), medium MAS (500–800 m) and long MAS (1000–1500 m).",{"type":21,"tag":71,"props":82,"children":83},{},[84,89],{"type":21,"tag":52,"props":85,"children":86},{},[87],{"type":27,"value":88},"Vary the format",{"type":27,"value":90},": pyramids (200-400-600-800-600-400-200), progressive-pace sessions, 3–5 min blocks.",{"type":21,"tag":71,"props":92,"children":93},{},[94,99],{"type":21,"tag":52,"props":95,"children":96},{},[97],{"type":27,"value":98},"Vary the environment",{"type":27,"value":100},": track, flat road, fartlek on trail, short hill repeats.",{"type":21,"tag":29,"props":102,"children":103},{},[104],{"type":27,"value":105},"The principle: your body needs to constantly wonder \"what's being done to me here?\". It's that controlled disorientation that forces adaptation.",{"type":21,"tag":40,"props":107,"children":109},{"id":108},"_2-you-run-your-intervals-too-fast-or-too-slow",[110],{"type":27,"value":111},"2) You run your intervals too fast (or too slow)",{"type":21,"tag":29,"props":113,"children":114},{},[115],{"type":27,"value":116},"Many plateaued runners make one of these two mistakes:",{"type":21,"tag":67,"props":118,"children":119},{},[120,130],{"type":21,"tag":71,"props":121,"children":122},{},[123,128],{"type":21,"tag":52,"props":124,"children":125},{},[126],{"type":27,"value":127},"Too fast",{"type":27,"value":129},": they start at 105–110% of MAS on the first reps, collapse afterwards, and end up spending little total time in the useful zone.",{"type":21,"tag":71,"props":131,"children":132},{},[133,138],{"type":21,"tag":52,"props":134,"children":135},{},[136],{"type":27,"value":137},"Too slow",{"type":27,"value":139},": they stay at 90–95% out of comfort, without really stressing VO2max.",{"type":21,"tag":29,"props":141,"children":142},{},[143,145,150],{"type":27,"value":144},"The effective window is narrow: ",{"type":21,"tag":52,"props":146,"children":147},{},[148],{"type":27,"value":149},"95 to 102% of MAS",{"type":27,"value":151}," for the bulk of the volume.",{"type":21,"tag":60,"props":153,"children":155},{"id":154},"how-to-break-out-1",[156],{"type":27,"value":65},{"type":21,"tag":67,"props":158,"children":159},{},[160,170,180],{"type":21,"tag":71,"props":161,"children":162},{},[163,168],{"type":21,"tag":52,"props":164,"children":165},{},[166],{"type":27,"value":167},"Calibrate with your watch",{"type":27,"value":169},": if your MAS is 16 km\u002Fh, your 100% MAS pace is 3:45\u002Fkm. Over 400 m, that's 1:30. Not 1:25 (too fast), not 1:35 (too slow).",{"type":21,"tag":71,"props":171,"children":172},{},[173,178],{"type":21,"tag":52,"props":174,"children":175},{},[176],{"type":27,"value":177},"First rep = exact target pace",{"type":27,"value":179},", not faster.",{"type":21,"tag":71,"props":181,"children":182},{},[183,188],{"type":21,"tag":52,"props":184,"children":185},{},[186],{"type":27,"value":187},"If you can't hold the pace on the last 2 reps",{"type":27,"value":189},", you started too fast.",{"type":21,"tag":29,"props":191,"children":192},{},[193,195,202],{"type":27,"value":194},"Also read the ",{"type":21,"tag":196,"props":197,"children":199},"a",{"href":198},"\u002Fen\u002Farticles\u002F2026-05-07-vo2max-pace-running-guide.en",[200],{"type":27,"value":201},"complete MAS guide",{"type":27,"value":203}," to fully understand pace zones.",{"type":21,"tag":40,"props":205,"children":207},{"id":206},"_3-you-neglect-your-aerobic-base",[208],{"type":27,"value":209},"3) You neglect your aerobic base",{"type":21,"tag":29,"props":211,"children":212},{},[213,215,220],{"type":27,"value":214},"This is the most underrated lever for plateaued runners. VO2max — and therefore MAS — depends largely on ",{"type":21,"tag":52,"props":216,"children":217},{},[218],{"type":27,"value":219},"two peripheral factors",{"type":27,"value":221},":",{"type":21,"tag":67,"props":223,"children":224},{},[225,235],{"type":21,"tag":71,"props":226,"children":227},{},[228,233],{"type":21,"tag":52,"props":229,"children":230},{},[231],{"type":27,"value":232},"Mitochondrial",{"type":27,"value":234}," density in your muscle fibres.",{"type":21,"tag":71,"props":236,"children":237},{},[238,243],{"type":21,"tag":52,"props":239,"children":240},{},[241],{"type":27,"value":242},"Capillarisation",{"type":27,"value":244}," (the number of small vessels feeding the muscle).",{"type":21,"tag":29,"props":246,"children":247},{},[248,250,255],{"type":27,"value":249},"Both adaptations develop ",{"type":21,"tag":52,"props":251,"children":252},{},[253],{"type":27,"value":254},"primarily during long easy runs",{"type":27,"value":256}," — not during intervals. That's why a runner doing 4 quality sessions a week without easy volume eventually hits the ceiling: they no longer have the cellular infrastructure to absorb and use the oxygen they're pumping at MAS.",{"type":21,"tag":60,"props":258,"children":260},{"id":259},"how-to-break-out-2",[261],{"type":27,"value":65},{"type":21,"tag":67,"props":263,"children":264},{},[265,283,295],{"type":21,"tag":71,"props":266,"children":267},{},[268,270,281],{"type":27,"value":269},"Aim for ",{"type":21,"tag":52,"props":271,"children":272},{},[273,275],{"type":27,"value":274},"70 to 80% of your weekly volume at ",{"type":21,"tag":196,"props":276,"children":278},{"href":277},"\u002Fen\u002Farticles\u002F2025-12-12-fundamental-endurance-running.en",[279],{"type":27,"value":280},"easy aerobic pace",{"type":27,"value":282}," (60–75% of MAS, comfortable conversation).",{"type":21,"tag":71,"props":284,"children":285},{},[286,288,293],{"type":27,"value":287},"Add ",{"type":21,"tag":52,"props":289,"children":290},{},[291],{"type":27,"value":292},"one long slow run",{"type":27,"value":294}," per week, 1h15 to 2h depending on your goal.",{"type":21,"tag":71,"props":296,"children":297},{},[298,300,306],{"type":27,"value":299},"To better understand the cellular mechanics behind this work, read ",{"type":21,"tag":196,"props":301,"children":303},{"href":302},"\u002Fen\u002Farticles\u002F2026-01-22-understanding-mitochondria-runners-powerhouses.en",[304],{"type":27,"value":305},"understanding mitochondria",{"type":27,"value":307},".",{"type":21,"tag":40,"props":309,"children":311},{"id":310},"_4-you-stack-weeks-with-no-recovery",[312],{"type":27,"value":313},"4) You stack weeks with no recovery",{"type":21,"tag":29,"props":315,"children":316},{},[317,319,324],{"type":27,"value":318},"The myth of linear progression does a lot of damage. You tell yourself: \"if I push one more all-out week, I'll progress faster\". Wrong. Progression happens ",{"type":21,"tag":52,"props":320,"children":321},{},[322],{"type":27,"value":323},"during recovery",{"type":27,"value":325},", not during effort. If you never let your body supercompensate, you accumulate chronic fatigue — which mimics a MAS plateau, or even regression.",{"type":21,"tag":60,"props":327,"children":329},{"id":328},"how-to-break-out-3",[330],{"type":27,"value":65},{"type":21,"tag":67,"props":332,"children":333},{},[334,346,358],{"type":21,"tag":71,"props":335,"children":336},{},[337,339,344],{"type":27,"value":338},"Apply a ",{"type":21,"tag":52,"props":340,"children":341},{},[342],{"type":27,"value":343},"3+1 structure",{"type":27,"value":345},": 3 weeks of increasing load, 1 deload week (-30 to -40% volume, -50% intensity).",{"type":21,"tag":71,"props":347,"children":348},{},[349,351,356],{"type":27,"value":350},"If you've strung together 6+ weeks without an easy week, take ",{"type":21,"tag":52,"props":352,"children":353},{},[354],{"type":27,"value":355},"10 days in \"reserve\" mode",{"type":27,"value":357}," before launching a new block.",{"type":21,"tag":71,"props":359,"children":360},{},[361],{"type":27,"value":362},"Watch the overload signals: degraded sleep, high resting HR, dropping motivation, interval paces falling apart.",{"type":21,"tag":364,"props":365,"children":366},"blockquote",{},[367],{"type":21,"tag":29,"props":368,"children":369},{},[370],{"type":27,"value":371},"Many runners \"unlock\" 1 km\u002Fh of MAS after a simple forced recovery week — the MAS was there all along, masked by fatigue.",{"type":21,"tag":40,"props":373,"children":375},{"id":374},"_5-you-neglect-strength-work",[376],{"type":27,"value":377},"5) You neglect strength work",{"type":21,"tag":29,"props":379,"children":380},{},[381,383,388],{"type":27,"value":382},"MAS isn't just a matter of heart and lungs. At MAS pace, each stride applies 2 to 3 times your body weight to the ground. If your muscles can't return that energy efficiently, you lose speed ",{"type":21,"tag":52,"props":384,"children":385},{},[386],{"type":27,"value":387},"at the same VO2max",{"type":27,"value":389}," — this is what we call running economy.",{"type":21,"tag":29,"props":391,"children":392},{},[393,395,400],{"type":27,"value":394},"And running economy is a ",{"type":21,"tag":52,"props":396,"children":397},{},[398],{"type":27,"value":399},"major",{"type":27,"value":401}," factor in plateauing once you reach a certain level. You can gain 3–5% of speed at the same MAS just by improving your strength and muscular stiffness.",{"type":21,"tag":60,"props":403,"children":405},{"id":404},"how-to-break-out-4",[406],{"type":27,"value":65},{"type":21,"tag":67,"props":408,"children":409},{},[410,428,438],{"type":21,"tag":71,"props":411,"children":412},{},[413,426],{"type":21,"tag":52,"props":414,"children":415},{},[416,418,424],{"type":27,"value":417},"2 ",{"type":21,"tag":196,"props":419,"children":421},{"href":420},"\u002Fen\u002Farticles\u002F2026-01-22-strength-training-basics-for-runners.en",[422],{"type":27,"value":423},"strength training",{"type":27,"value":425}," sessions per week",{"type":27,"value":427},", focused on legs and posterior chain (squats, lunges, calves, core).",{"type":21,"tag":71,"props":429,"children":430},{},[431,436],{"type":21,"tag":52,"props":432,"children":433},{},[434],{"type":27,"value":435},"1 short hill session",{"type":27,"value":437}," (8–12 × 30 s uphill at 6–8% gradient) every 1–2 weeks: it's MAS + strength in a single session.",{"type":21,"tag":71,"props":439,"children":440},{},[441,446],{"type":21,"tag":52,"props":442,"children":443},{},[444],{"type":27,"value":445},"Light plyometrics",{"type":27,"value":447}," (bounding, skipping, jumps) as an add-on to your warm-up drills.",{"type":21,"tag":40,"props":449,"children":451},{"id":450},"_6-you-test-your-mas-in-poor-conditions",[452],{"type":27,"value":453},"6) You test your MAS in poor conditions",{"type":21,"tag":29,"props":455,"children":456},{},[457,459,464],{"type":27,"value":458},"If you do your MAS test coming out of an intense block, at 25°C in full sun, or on terrain you don't know — you're measuring your form on the day, not your real MAS. Many \"plateaus\" are actually ",{"type":21,"tag":52,"props":460,"children":461},{},[462],{"type":27,"value":463},"repeated measurement errors",{"type":27,"value":307},{"type":21,"tag":60,"props":466,"children":468},{"id":467},"how-to-break-out-5",[469],{"type":27,"value":65},{"type":21,"tag":67,"props":471,"children":472},{},[473,483,493,503],{"type":21,"tag":71,"props":474,"children":475},{},[476,481],{"type":21,"tag":52,"props":477,"children":478},{},[479],{"type":27,"value":480},"Test in stable, favourable conditions",{"type":27,"value":482},": same track, same time of day, same weather if possible, same protocol.",{"type":21,"tag":71,"props":484,"children":485},{},[486,491],{"type":21,"tag":52,"props":487,"children":488},{},[489],{"type":27,"value":490},"Not after a heavy intensity block",{"type":27,"value":492},": take 4 to 7 days of deload before a test.",{"type":21,"tag":71,"props":494,"children":495},{},[496,501],{"type":21,"tag":52,"props":497,"children":498},{},[499],{"type":27,"value":500},"2 to 3 tests per year maximum",{"type":27,"value":502}," — otherwise the test becomes just another session and loses its reference value.",{"type":21,"tag":71,"props":504,"children":505},{},[506,511],{"type":21,"tag":52,"props":507,"children":508},{},[509],{"type":27,"value":510},"Cross-check several indicators",{"type":27,"value":512},": field test + recent 10K time + sensations on your usual sessions.",{"type":21,"tag":40,"props":514,"children":516},{"id":515},"_7-you-dont-sleep-you-dont-eat-enough",[517],{"type":27,"value":518},"7) You don't sleep \u002F you don't eat enough",{"type":21,"tag":29,"props":520,"children":521},{},[522],{"type":27,"value":523},"Sleep and nutrition aren't \"bonus\" parameters. They're the material conditions of adaptation. A runner who sleeps 6 hours a night with a slight calorie deficit recovers much worse than the same runner at 8 hours and balanced calories — for exactly the same training.",{"type":21,"tag":60,"props":525,"children":527},{"id":526},"how-to-break-out-6",[528],{"type":27,"value":65},{"type":21,"tag":67,"props":530,"children":531},{},[532,542,552],{"type":21,"tag":71,"props":533,"children":534},{},[535,540],{"type":21,"tag":52,"props":536,"children":537},{},[538],{"type":27,"value":539},"7h30 to 9 hours of sleep",{"type":27,"value":541}," per night, consistently. Short nights during a quality block kill adaptation.",{"type":21,"tag":71,"props":543,"children":544},{},[545,550],{"type":21,"tag":52,"props":546,"children":547},{},[548],{"type":27,"value":549},"Enough carbohydrates",{"type":27,"value":551}," around quality sessions. No fasted MAS sessions — you'll mess it up and get tired for nothing.",{"type":21,"tag":71,"props":553,"children":554},{},[555,560],{"type":21,"tag":52,"props":556,"children":557},{},[558],{"type":27,"value":559},"Protein",{"type":27,"value":561}," at 1.4–1.8 g\u002Fkg\u002Fday during quality blocks, to support muscle rebuilding.",{"type":21,"tag":40,"props":563,"children":565},{"id":564},"re-launch-plan-a-6-week-cycle-to-break-the-plateau",[566],{"type":27,"value":567},"Re-launch plan: a 6-week cycle to break the plateau",{"type":21,"tag":29,"props":569,"children":570},{},[571],{"type":27,"value":572},"Here's a template plan to restart after 2–3 months of 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Each quality session starts with a 15–20 min warm-up and ends with a 10 min cool-down.",{"type":21,"tag":60,"props":798,"children":800},{"id":799},"the-3-golden-rules-of-the-re-launch-cycle",[801],{"type":27,"value":802},"The 3 golden rules of the re-launch cycle",{"type":21,"tag":804,"props":805,"children":806},"ol",{},[807,817,827],{"type":21,"tag":71,"props":808,"children":809},{},[810,815],{"type":21,"tag":52,"props":811,"children":812},{},[813],{"type":27,"value":814},"No more than 2 quality sessions per week",{"type":27,"value":816}," — the 3rd is always one too many when coming out of a plateau.",{"type":21,"tag":71,"props":818,"children":819},{},[820,825],{"type":21,"tag":52,"props":821,"children":822},{},[823],{"type":27,"value":824},"Total volume increases by 5 to 10% per week maximum",{"type":27,"value":826}," over weeks 2–5, then reload before the test.",{"type":21,"tag":71,"props":828,"children":829},{},[830,835],{"type":21,"tag":52,"props":831,"children":832},{},[833],{"type":27,"value":834},"Evaluate by feel",{"type":27,"value":836},", not just by stopwatch. A session that subjectively becomes easier at the same pace = real progression, even if the final test hasn't budged.",{"type":21,"tag":40,"props":838,"children":840},{"id":839},"what-if-it-still-doesnt-work",[841],{"type":27,"value":842},"What if it still doesn't work?",{"type":21,"tag":29,"props":844,"children":845},{},[846],{"type":27,"value":847},"If after 8 to 12 well-conducted weeks you're still not progressing, examine these first:",{"type":21,"tag":67,"props":849,"children":850},{},[851,861,878],{"type":21,"tag":71,"props":852,"children":853},{},[854,859],{"type":21,"tag":52,"props":855,"children":856},{},[857],{"type":27,"value":858},"Are you coming out of a break",{"type":27,"value":860}," (injury, COVID, overtraining)? Count 3–6 months before getting back to your best level.",{"type":21,"tag":71,"props":862,"children":863},{},[864,869,871,877],{"type":21,"tag":52,"props":865,"children":866},{},[867],{"type":27,"value":868},"You're getting older",{"type":27,"value":870},": VO2max declines by roughly 5–10% per decade after age 35 — it's manageable but real. See our article on ",{"type":21,"tag":196,"props":872,"children":874},{"href":873},"\u002Fen\u002Farticles\u002F2026-04-11-running-after-50-adapt-training.en",[875],{"type":27,"value":876},"running after 50",{"type":27,"value":307},{"type":21,"tag":71,"props":879,"children":880},{},[881,886],{"type":21,"tag":52,"props":882,"children":883},{},[884],{"type":27,"value":885},"You're plateauing at an already high level",{"type":27,"value":887},": above 18–20 km\u002Fh MAS, gains come in tenths, and the focus shifts toward running economy and fatigue resistance rather than raw VO2max.",{"type":21,"tag":29,"props":889,"children":890},{},[891,893,898],{"type":27,"value":892},"In any case, remember that a stable MAS but a ",{"type":21,"tag":52,"props":894,"children":895},{},[896],{"type":27,"value":897},"10K speed that keeps improving",{"type":27,"value":899}," is just as (or more) beneficial than a rising MAS — it's the sign that your running economy and threshold are improving. 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