Dr. Gymbro
Fitness General Nutrition Recovery Science & Research Trending: supplements sports nutrition creatine pre workout recovery
A bright, airy, minimalist kitchen counter in soft morning light, shot from a slightly elevated three-quarter angle in a wide landscape composition. Two matching ceramic bowls sit side by side on a pale oak butcher-block surface. The left bowl holds fine, creamy-beige pea protein powder with a small wooden scoop resting in it. The right bowl holds smooth, ivory-white whey powder with an identical scoop. Between and slightly behind them sits a third, smaller empty bowl with a plain scoop, hinting at the placebo. Scattered around the bowls are fresh green pea pods, some split open to reveal bright, round peas, and a small glass bottle of milk with delicate condensation. A sage-green linen napkin is folded loosely at the edge of the frame. In the soft-focus background, a young man in a fitted heather-gray t-shirt is seen from the shoulders down, casually flexing one arm while holding a matte shaker bottle, the biceps subtly defined and the pose relaxed and natural. A minimalist notebook with a pencil and a simple hand-drawn bar chart lies open on the counter, suggesting analysis without legible text. A small potted herb plant and a ceramic mug add warmth. The color palette is muted and editorial: warm cream, sage green, soft terracotta, pale wood, and touches of charcoal. Light streams in from a window on the left, casting gentle long shadows and a subtle golden glow across the powders so their textures look fine and tactile. Shallow depth of field keeps the bowls crisp while the background melts into a creamy blur. The look is modern lifestyle-magazine photography, clean and uncluttered, with generous negative space on the right third of the frame for headline overlay. It is natural, appetizing, and trustworthy, in the style of a contemporary wellness and nutrition journal.
Nutrition

Grašak protein vs. surutka: Neočekivani rezultat početnika

Dr. Gymbro · · 3 min read
#muscle growth #whey protein #pea protein #plant based nutrition #protein supplements #beginner lifters #vegan fitness

Ako ste vegan, netolerantni na laktozu ili ste umorni od nadutosti uzrokovane mliječnim proizvodima, vjerojatno se pitate može li biljni protein stvarno izgraditi mišiće.

12‑tjedna, dvostruko‑slijepa studija na 161 muškarcu postavila je grašak‑protein nasuprot surutki i placebu. Glavni rezultat je impresivan, ali sitni print je jednako važan.

Što su zapravo testirali

Studija, objavljena u Journal of the International Society of Sports Nutrition 2015. godine od Babaulta i suradnika, bila je randomizirana, dvostruko‑slijepa i kontrolirana placebom. Uključila je 161 muškarca, starosti 18‑35 godina, podijeljene u tri grupe:

  • Grašak‑protein (brend NUTRALYS), n = 53
  • Surutka, n = 54
  • Placebo, n = 54

Svi su proveli 12 tjedana treninga otpora usmjerenog na gornje ekstremitete. Svaki sudionik uzimao je 25 g proteina (ili placeba) dva puta dnevno, otprilike 50 g dnevno. Istraživači su ultrazukom izmjerili debljinu biceps brachii i snagu na izokinetičkom dinamometru na početku, na 42. dan i na 84. dan.

Rezultati: Svi su rasli, ali razlike između grupa su minimalne

Kod svih sudionika debljina bicepsa porasla je s 24,9 mm na 26,9 mm u sredini studije i na 27,3 mm na kraju. Taj vremenski učinak bio je izuzetno značajan (P < 0,0001), pa je trening očito djelovao.

Razlika između grupa bila je samo trend (P = 0,09) i nije zadovoljila uvjete statističke značajnosti. Snaga se također poboljšala s vremenom, ali bez značajne razlike među grupama.

Dakle, u cijeloj populaciji ne možemo tvrditi da je grašak prevladao bilo koju drugu opciju. To je tek početak priče, a sljedeći dio postaje ključan.

Ključni nalaz za početnike

Istraživači su potom proveli analizu osjetljivosti – razdvojili su sudionike s najnižom početnom snagom (tzv. najslabiji sudionici). U toj podgrupi razlike su bile statistički značajne (P < 0,05):

  • Grašak‑protein: +20,2 % debljine bicepsa
  • Surutka: +15,6 %
  • Placebo: +8,6 %

Povećanje kod graška bilo je značajno veće od placeba. Surutka je završila između graška i placeba i statistički se nije razlikovala ni od jedne ni od druge. Grašak nije nadmašio surutku, ali je jedini protein koji je premašio placebo grupu.

Autori zaključuju da grašak‑protein dovodi do većeg dobitka u debljini u odnosu na placebo, osobito kod onih koji tek počinju ili se vraćaju treningu snage. Budući da se dva proteina nisu značajno razlikovala, predlažu grašak kao alternativu surutki.

Sitni print koji ne smijete zanemariti

  • Glavna usporedba je bila trend. Razlika u cijeloj skupini (P = 0,09) nije statistički značajna.
  • Pozitivan nalaz potječe iz podgrupe. Analize osjetljivosti mogu generirati korisne hipoteze, ali su podložnije slučajnosti nego primarni rezultat.
  • Veze s industrijom. Nekoliko autora ima suradnju s tvrtkom Roquette, proizvođačem NUTRALYS‑a. To ne umanjuje kvalitetu studije, ali kontekst je važan.
  • Uska populacija. Sudionici su mladi muškarci koji su trenirali samo gornji dio tijela (bicepse). Rezultati se ne mogu automatski primijeniti na žene, starije osobe ili treninge nogu.
  • Nema pobjede ili poraza za surutku. Dobitak surutke od 15,6 % nije statistički različit ni od graška ni od placeba, pa studija ne može rangirati protokole.

Pošteno tumačenje: grašak‑protein je izvediva opcija kada je trening dovoljno intenzivan i ukupni unos proteina adekvatan. To ne znači da je grašak superiorniji, niti da je potpuno ekvivalentan u svakom kontekstu.

Praktične pouke

Doza. Studija je koristila 25 g dva puta dnevno, ukupno ≈ 50 g suplementiranog proteina po danu. To je realan cilj za mnoge liftere, iako je i ukupni dnevni unos iz hrane važan.

Raspored uzimanja. Vrijeme uzimanja nije bilo predmet istraživanja. Podjela proteina u dva obroka, s jednim oko treninga, praktičan je način da se replicira studijski protokol. Konzistentnost kroz 12 tjedana vjerojatno je važnija od točnog minuta.

Za koga je namijenjen. Grašak‑protein je razumna opcija za vegane, osobe netolerantne na laktozu, osjetljive na mliječne proizvode i za svakoga tko preferira biljne suplementacije. Najjači signal dolazi kod početnika ili povratnika u teretanu – oni obično brže reagiraju na kvalitetan protein uz adekvatan trening.

Kako odabrati grašak‑protein:

  • Tražite jasno označen sadržaj proteina po porciji, idealno 20‑25 g.
  • Birajte proizvode s kratkim popisom sastojaka i minimalnim brojem punila.
  • Provjerite postoji li testiranje treće strane (npr. NSF™ ili Informed‑Choice) radi kvalitete i kontrole kontaminanata.
  • Imajte na umu da je studija koristila jedan specifični izolat – drugi proizvodi mogu varirati u obradi i aminokiselinskom profilu.
  • Usporedite cijenu po gramu proteina, a ne samo po pakiranju.

Zaključak

Pitanje grašak‑protein vs. surutka nema konačan odgovor iz ove studije. Kod 161 muškarca, grašak‑protein podržao je rast mišića uz trening, a najslabiji sudionici ostvarili su +20,2 % debljine bicepsa naspram +8,6 % kod placeba. Surutka je pokazala sličan rezultat, a podaci ne pokazuju da je jedna opcija jasno nadmašila drugu. Ako izbjegavate mliječne proizvode, ova studija pruža razuman, znanstveno potkrijepljen razlog za korištenje grašak‑proteina – pod uvjetom da imate realna očekivanja i redovito trenirate.

Original study

Read the original research on pubmed.ncbi.nlm.nih.gov →

This article summarizes published research for general information. It is not medical advice.

Share XFacebookLinkedInRedditWhatsApp
DG

Written by

Dr. Gymbro

Dr. Gymbro writes for Dr. Gymbro: science-backed fitness, nutrition & performance.

Related Articles

A bright, minimalist editorial still life on a pale oak table, shot from a slightly elevated three-quarter angle in soft natural window light. On the left sits a rustic ceramic bowl of uncooked short-grain white rice, with a few grains scattered across the wood. Beside it is a matte cream-colored shaker bottle. On the right is a small glass bowl of fine ivory whey powder with a wooden scoop resting in it, and a small pitcher of milk behind it. Two identical tall glasses of creamy, lightly frothed shake stand side by side in the center, one a touch warmer beige and the other a soft white. They suggest equal outcomes without any text or labels. A pair of worn black neoprene-coated dumbbells and a folded sage-green gym towel sit slightly out of focus in the background. A sprig of green rice stalks in a slim vase adds a fresh, natural accent. The palette is warm neutrals: cream, oatmeal, soft sage, and muted terracotta, with gentle shadows and a shallow depth of field. The surface has subtle grain, and fine powder dust is caught in the light. The composition is clean and balanced, with generous negative space on the upper right for a headline overlay. The mood is calm, modern, and health-forward, like a contemporary nutrition magazine or wellness journal. Photorealistic, crisp detail, creamy bokeh, and a gentle matte film-like finish.
nutrition

48 g rižinog proteina izjednačilo sirutku za mišiće i snagu u 8 tjedana

BY DR. GYMBRO ·

Biljni protein se obično smatra slabijim od sirutke, no studija iz 2013. na treniranim muškarcima pokazala je suprotno kada je korištena velika doza. U istraživanju s 24 otporno‑treniranim muškarcima, 48 g izolata rižinog proteina nakon treninga donijelo je iste dobitke u čistoj tjelesnoj masi, debljini mišića, snazi i eksplozivnosti kao 48 g sirutke tijekom osam tjedana. Zašto je riža izdržala? Vjerojatno je velika doza zatvorila jaz u leucinu.
A wide, editorial flat-lay photograph shot from directly above on a pale warm-gray stone countertop, lit by soft natural morning window light with gentle diagonal shadows. On the left, a neatly arranged cluster of whole-food protein sources: two seared chicken breast slices with a golden crust, a small ceramic bowl of creamy Greek yogurt topped with blueberries, three halved soft-boiled eggs with jammy orange yolks, a handful of raw almonds, and a small pile of dried lentils scattered on a linen napkin. At the center, a matte white shaker bottle and a wooden scoop resting in a pile of fine vanilla-colored protein powder, a few grains dusted artfully across the surface. On the right, a minimalist kitchen scale in matte black displaying a portion of food, next to an open notebook with a hand-drawn curve that rises steeply and then flattens into a plateau, drawn in a deep terracotta ink pen, with a small dot marking the bend. A brass pen lies beside the notebook. A single dumbbell with a brushed steel finish sits partially in frame at the upper right corner, grounding the fitness theme without feeling gym-like. Color palette: warm cream, sage green, terracotta, soft charcoal, and butter yellow accents, with generous negative space along the top edge for title overlay. Shallow depth of field, crisp textures, subtle film grain, modern lifestyle magazine aesthetic, clean and calm composition, 16:9 landscape.
nutrition

Koliko proteina zaista maksimizira mišiće? Objašnjen prag od 1,6 g/kg

BY DR. GYMBRO ·

Mislite li da vam treba više od 2 g proteina po kilogramu da biste izgradili mišiće? Metaanaliza 49 studija i 1.863 odrasle osobe pokazala je da se učinak na izgradnju mišića doseže pri unosu od oko 1,6 g/kg dnevno. Gornja granica pouzdanosti iznosi otprilike 2,2 g/kg, što teretančarima daje praktičan raspon umjesto proizvoljnog mega‑doze. Najveće koristi primijetili su iskusni teretančari, dok se učinak smanjuje s godinama. Evo kako ti brojevi izgledaju na tanjuru, u vašem šejku i u vašem budžetu.
A wide, softly lit editorial still life on a pale warm-gray concrete surface, shot from a slightly elevated three-quarter angle. In the center-left, two matte ceramic scoops sit side by side. One holds fine ivory whey powder, the other holds slightly coarser, pale golden collagen peptide powder. A small, elegant dusting of both powders spills between them and blends into a soft swirl. Behind them, three minimalist cream and sage-green supplement tubs with no legible text stand in a staggered row, with a frosted glass shaker bottle of creamy liquid beside them. On the right, a brushed-steel barbell plate and a compact chalk-dusted kettlebell rest slightly out of focus, suggesting resistance training. Pale wisps of chalk hang in the air. A folded charcoal gym towel and a pair of worn leather lifting straps lie in the foreground. A single cross-section of a clean white bone model, a stylized vertebra, rests on a small oak block at the far right. It subtly signals the bone-density theme without looking clinical. Natural window light enters from the left, casting long, gentle shadows and a warm highlight on the powders. The palette is muted and modern: oatmeal, bone white, sage green, soft charcoal, and touches of warm amber. Shallow depth of field keeps the scoops tack-sharp and melts the background into creamy blur. Leave generous negative space in the upper right for headline overlay. The overall feel is a premium health and science journal cover: clean, tactile, minimalist, with fine film-like grain and a calm, editorial mood.
nutrition

Whey + kolagen nadmašio oba samostalna suplementa kod dizača — jednim udarcem

BY DR. GYMBRO ·

Miješanjem 30 g whey proteina i 10 g kolagena u jednoj grupi postignuti su veći dobitci u mišićnoj masi, gustoći koštane mase lumbalnog dijela i snazi u čučnju i bench pressu, nego kada su se ti suplementi uzimali zasebno ili kada je korišten placebo. Kombinacija je donijela dodatnih 2,66 kg mišićne mase (prema BIA‑analizi), povećala BMD lumbala i poboljšala markerima kostnog metabolizma. Unatoč malom uzorku (40 sudionika) i nekim metodološkim nedostacima, rezultati sugeriraju sinergijski učinak whey‑a i kolagena kod treninga snage.
A wide, softly lit bedroom scene at dusk, styled like a modern editorial photograph. In the foreground, a rumpled bed with textured oatmeal linen sheets and a single dented pillow sits beside a light oak nightstand. On the nightstand is a tall glass of creamy, milky white protein shake, a small wooden scoop and a matte ceramic tub with no readable label, beside a minimalist analog alarm clock. The clock's hands show a late hour, and it casts a faint shadow on the wall. A pair of clean white running shoes rests on the floor by the bed. A folded gray athletic hoodie lies at the foot of the bed, suggesting an athlete's lifestyle. Warm amber light from a bedside lamp mixes with cool blue-gray twilight from a tall window with sheer curtains. The glow lands on the glass and gives the milky surface a soft sheen. Through the window, a muted city skyline fades into evening haze. The palette is calm and sophisticated: warm cream, soft sage green, dusty blue, and a touch of terracotta from a small ceramic vase holding dried pampas grass. The composition follows the rule of thirds, with the glass and clock in the right third and open negative space on the left for headline text. Shallow depth of field keeps the glass and clock crisp while the background blurs gently. The mood is quiet, slightly restless, and thoughtful, hinting at a night that does not go as planned. A subtle detail, a half-drawn curtain letting in a thin stripe of light across the rumpled sheets, suggests interrupted sleep. The look is clean, contemporary, and magazine-quality, with fine film grain, natural tones, and soft shadows, like a lifestyle wellness journal cover. No people, no text, no futuristic elements.
recovery

„Protein za spavanje“ koji je lošim spavačima uzrokovao češća buđenja

BY DR. GYMBRO ·

Alfa‑laktalbumin se reklamira kao „protein za spavanje“, a rana istraživanja sugerirala su da bi mogao pomoći sportašima da bolje spavaju i bolje se natječu. U novom randomiziranom, križnom ispitivanju testirano je na 24 sportaša s pravim problemima spavanja. Nakon tjedna uzimanja 40 g dva sata prije spavanja, učinak na san nije zabilježen – buđenja su se lagano povećala, a visina skoka je malo pala. Jedina pozitivna promjena bila je smanjenje negativnog raspoloženja navečer.

This page is available in

English العربيةবাংলাČeštinaDeutschEspañolفارسیFrançaisHausaहिन्दीHrvatskiBahasa IndonesiaItaliano日本語Basa Jawa한국어NederlandsਪੰਜਾਬੀPolskiPortuguêsRomânăРусскийSrpskiTürkçeУкраїнськаTiếng Việt中文