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Science & Research

ZMA kanggo Testosteron? 8 Minggu Ing Pengangkat Dada Ora Entuk Apa‑Apa

Dr. Gymbro · · 4 min read
#testosterone #supplements #resistance training #sports nutrition #magnesium #zma #zinc

ZMA kanggo Testosteron? 8 Minggu Ing Pengangkat Dada Ora Entuk Apa‑Apa

ZMA nduwèni salah siji latar crita paling warna‑warni ing donyané suplemen. Gabungan zinc, magnesium, lan vitamin B6 iki biasanya dijupuk 30‑60 menit sadurungé turu. Popularitasé mundhak ing awal 2000‑an merga klaim nggegirisi bab testosteron lan kekuatan, lan uga kakehan disebutaké ing skandal BALCO sing dipimpin déning Victor Conte. Sawijining studi awal marang pemain football perguruan tinggi nglaporaké peningkatan gedhé, mula hype dadi ngudara. Banjur, uji coba sing luwih ketat nang wong‑wong sing wis biasa latihan beban, lan asilé meh ora ana apa‑apa.

Uji coba iki, sing ditulis déning Wilborn lan kolega, diterbitaké ing 2004 ing Journal of the International Society of Sports Nutrition. Saiki dadi patokan kanggo sapa wae sing pingin ngerti apa kapsul bengi iki bener‑bener bisa ngowahi hormon utawa otot.

Apa Sejatine ZMA?

ZMA iku akronim saka Zinc, Magnesium, lan Aspartate. Formulasi komersial iki dipangan 30‑60 menit sadurunge turu. Penjualane prasaja: zinc lan magnesium iku mineral sing melu ratusan reaksi enzim, lan atlit sing latihan keras bisa kelangan utawa kurang ngonsumsi. Nambahake nalika bengi, miturut teori, bakal ndhukung pemulihan lan lingkungan hormon sing ngedongkrak pertumbuhan otot, utamané testosteron.

Pemasaran ngandelaké studi awal ing pemain football Amerika sing nglaporaké testosteron luwih dhuwur lan kenaikan kekuatan luwih gedhé kanthi ZMA. Asil iki kerep dipetik ing iklan suplemen, nanging siji studi ing populasi khusus ora padha karo temuan sing wis direplikasi. Uji coba Wilborn dirancang kanggo nguji klaim iki kanthi luwih langsung.

Desain Studi

Para peneliti ngrekrut 42 priya sing wis latihan beban. Umuré rata‑rata 27 taun, dhuwuré kira‑kira 178 cm, lan bobot 85 kg, kanthi persentase lemak awak 18,6 %. Partisipan dipasangi pasangan adhedhasar massa bebas lemak, banjur dipilih acak kanthi double‑blind kanggo nampa ZMA utawa plasebo dextrose sadurunge turu. Loro grup nglakoni program latihan beban standar sing padha sajrone wolung minggu.

Pengukuran ditindakake ing baseline, minggu kaping 4 lan minggu kaping 8. Panel pengukurané komprehensif:

  • Komposisi awak – diukur nganggo dual‑energy X‑ray absorptiometry (DXA)
  • Kekuatan – one‑rep max bench press lan leg press
  • Daya tahan otot – ing angkatan ndhuwur lan ngisor
  • Tenaga anaerobik – tes Wingate siklus
  • Panel darah – status zinc lan magnesium, hormon anabolik lan katabolik, lan penanda kesehatan umum

Data dianalisis nganggo repeated‑measures ANOVA, cara sing cocok kanggo mbandhingaké perubahan saka wektu ke wektu antar grup.

Hasil: Ora Ana Keuntungan Saka Endi‑Endine

Siji‑sijiné sinyal sing nuduhaké efek ZMA yaiku serum zinc. Kadar zinc munggah 11‑17 % ing grup ZMA, nanging beda iki ora signifikan sacara statistik (p = 0,12). Mula, efek paling dhasar – nambah zinc ing aliran getih – ora cetha mbedakake grup.

Sakabèhé, kabeh padha rata. Penulis ora nemokaké bedane signifikan antarané grup ing:

  • Status hormon anabolik utawa katabolik, kalebu testosteron
  • Komposisi awak
  • 1RM bench press lan leg press
  • Daya tahan otot ndhuwur utawa ngisor
  • Kapasitas anaerobik siklus

Penulis nyimpulake yèn suplementasi ZMA sajrone latihan ora nambah adaptasi latihan ing populasi sing wis terlatih. Loro grup mesthi nambah kinerja amarga program latihane dhéwé, nanging ZMA ora nambah apa‑apa sing bisa diukur.

Ngendi Kahanan Kekurangan Nutrisi (Konteks, Dudu Temuan)

Salah paham yèn studi iki mbuktèkaké zinc lan magnesium ora penting. Studi iki mung nduduhaké yèn nambah ZMA ora ningkataké asil latihan ing wong sing ora kekurangan nutrisi. Wong sing tenan kekurangan zinc utawa magnesium bisa ana ing kondisi beda. Ngatasi kekurangan nyata bisa menehi manfaat kesehatan, lan kadar zinc sing rendah kerep disambungaké karo fungsi hormon.

Makalah iki ora nyritakaké yèn ZMA mbantu lifter sing kekurangan. Yen sampeyan curiga ana kekurangan amarga diet ketat, keringat akehé, utawa variasi panganan sing sithik, langkah pisanan yaiku mriksani pola makan lan, yen perlu, njaluk tes laboratorium.

Watesan Sing Perlu Ditengeti

  • Uji coba iki mung wolung minggu lan mung 42 priya sing wis terlatih beban. Asil ora otomatis ditrapaké kanggo wanita, wong tuwa, pamula, utawa wong sing lagi diet kalori rendah.
  • Produk sing diuji mung siji produk komersial ZMA. Ora ateges produk ZMA liya ora bakal nduwèni efek sing beda.
  • Nanging, desain double‑blind, plasebo‑kontrol, lan ukuran objektif kaya DXA lan tes performa ndadekaké studi iki luwih kuat tinimbang klaim marketing sing adhedhasar siji studi football awal.

Ringkesan Praktis

  • Aja tuku ZMA minangka booster testosteron. Uji iki ora ngowahi testosteron utawa hormon anabolik/katabolik liya.
  • Aja ngarepake kenaikan kekuatan utawa ukuran. 1RM, daya tahan, kapasitas anaerobik, lan massa tanpa lemak tetep padha karo plasebo.
  • Gunakake dhuwitmu kanggo hal dhasar. Latihan progresif, protein lan kalori sing cukup, lan turu sing teratur nduwèni bukti sing luwih kuat.
  • Penuhi kebutuhan mineral lewat panganan dhisik. Daging, kerang, kacang‑kacangan, wiji‑wijian, whole grain, lan sayuran ijo kandel nyedhiyakake zinc lan magnesium. Yen curiga ana kekurangan, priksa dhisik nganggo tes tinimbang nebak‑nebak.
  • Waspada karo asil awal sing mencorong. Siji studi positif, utamane sing dipigunakaké kanggo adol produk, kudune direplikasi sadurunge dipercaya.

Sumber

Wilborn et al. (2004). Effects of Zinc Magnesium Aspartate (ZMA) Supplementation on Training Adaptations and Markers of Anabolism and Catabolism. Journal of the International Society of Sports Nutrition. DOI: 10.1186/1550-2783-1-2-12 | PubMed: 18500945

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.

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Dr. Gymbro

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

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