Shekaru da dama, dokar motsa jiki ta ce: idan kana son samun protein a dare, ka sha casein – wacce ake kira “mai zuba a hankali”. Sabon gwaji kan mutane ya jefa wannan ra'ayi cikin rudani.
A wani ƙaramin gwaji (n = 9) gram 40 na whey protein da aka sha minti 30 kafin kwanciya bayan horon ƙarfi ya rage lokacin faduwa barci, inganta barci, da rage ciwon tsoka fiye da abin sha na carbohydrate da aka daidaita da adadin kalori. Casein, wacce aka ɗauka a matsayin zakarar dare, ba ta kai wannan matakin ba.
Kafin kowanne ya watsar da buhun casein, dole ne a fahimci cikakkun bayanai. Wannan binciken kan mutane ne, amma ƙanana sosai, kuma whey ba ta kayi nasara a kan casein a gwajin kai tsaye.
Binciken: Abin Da Masana Sukayi
Aikin ya fito ne daga ƙungiyar Jami'ar Fasaha ta Munich (Technical University of Munich) tare da haɗin gwiwa a Jamus da Netherlands, kuma an wallafa a International Journal of Sport Nutrition and Exercise Metabolism (2026). Gwajin ya kasance randomized, double‑blind, crossover trial, wato kowanne mahalarta ya gwada dukkan yanayi uku.
Mata da maza 9 masu lafiya, masu horon jiki, sun halarta: maza biyar da mata huɗu, shekarunsu matsakaici 24 ± 2, BMI 24.4 ± 2.9 kg/m². A lokuta uku daban‑daban, sun yi horon motsa jiki, sannan a minti 30 kafin su kwanta suka sha ɗayan zabin uku:
- WHEY: gram 40 whey protein
- CASEIN: gram 40 casein protein
- CON: isocaloric maltodextrin (carbohydrate) control
Barci an auna shi da actigraphy (na’urar motsi da ake saka a wuyan hannu), heart‑rate variability (HRV), da tambayar ra'ayin barci. Haka kuma an bi sawun alamun hanji, aikin horo na gobe, da delayed onset muscle soreness (DOMS).
Lambobi: Whey vs Control
Sakamakon an gabatar da su a matsayin median, tare da tazara a cikin inter‑quartile range. Whey ta wuce control a kowane muhimmin ma’aunin barci (duk p < .05):
| Ma’auni | WHEY | CASEIN | CON |
|---|---|---|---|
| Lokacin faduwa barci (min) | 9.0 | 16.0 | 19.0 |
| Ingancin barci | 96% | 96% | 93% |
| Jimillar lokacin barci (min) | 400 | 390 | 363 |
| Kimar barci daga mahalarta (1‑10) | 8.0 | 7.0 | 6.0 |
Babban labari shi ne lokacin faduwa barci: median kusan mintuna 9 bayan whey, yayinda carbohydrate control ke ba da mintuna 19. Jimillar lokacin barci ma ya nuna kusan mintuna 37 mafi tsawo a yanayin whey.
Whey ma ta rage DOMS a sa’o’i 12 da 24 bayan horo idan aka kwatanta da control (p < .05).
Jerin Mummunan: Casein Ba Ta Wuce Control
Medians na casein sun tsaya tsakanin whey da control a mafi yawan ma’aunin (mintuna 16 don faduwa barci, mintuna 390 na barci, kimar 7). Amma casein ba ta inganta barci sosai idan aka kwatanta da control.
Wannan shi ne bambanci da ke sa labarin ya zama abu don tattaunawa, ba hukunci ba. Takardar ta nuna cewa ribar whey ta kasance mai muhimmanci a kan control, amma ba a kan casein ba (duk p > .05). Don haka binciken ba ya nuna cewa whey ta fi casein ba. Ya nuna kawai whey ta wuce statistically a kan carbohydrate, yayin da casein ba ta yi hakan ba. Da mutane tara kawai, wannan bambanci na iya zama sakamakon hayaniya da ƙarancin ƙarfi.
Abubuwan Da Ba Su Canza Ba
Wannan ba sihiri bane ga kowa da kowa. Ba a samu bambanci tsakanin rukunin a:
- Ma’aunin heart‑rate variability
- Alamun hanji
- Aikace‑aikacen horo na gobe
Wannan na ƙarshe yana da mahimmanci. Kyakkyawan barci da ƙarancin ciwo ba su haifar da ƙaruwa a aikin gobe a wannan gwajin. A bangaren alheri, gram 40 na protein a kusa da lokacin kwanciya ba su ƙara matsalolin ciki fiye da control.
Me Ya Sa Whey Zai Iya Taimakawa Barci?
Abstrakt ba ya ƙayyade hanyoyin da ke faruwa, don haka duk wani bayani yana kan tunani ne kawai. Wasu ra’ayoyi sun haɗa da:
- Amino acid da ke fitowa daga whey – suna iya tasiri kan hanyoyin da suka shafi barci.
- Saurin narkewa da shige – whey yana narkewa da sauri, wanda zai iya kawo rise a serotonin da melatonin.
- Rage ciwon tsoka – ciwon tsoka da aka rage yana sa mutum ya fi sauƙin yin barci.
Babu ɗayansu da aka gwada a wannan bincike. A ɗauki su a matsayin tunanin bincike na gaba, ba sakamakon da aka tabbatar ba.
Iyakokin Da Ya Kamata Ka San
- Samfurin ƙanana: mutane 9. Gwaje‑gwajen crossover kan ƙanana su kan rasa babbar ƙarfi ko su nuna bambancin bazuwar.
- Whey vs casein ba a warware ba: babu bambanci mai ƙarfi a gwajin kai tsaye.
- Actigraphy ba dakin gwajin barci ba ne: yana kimanta barci daga motsi, ba kamar polysomnography ba, musamman ga lokacin faduwa barci.
- Kimantawa daga zuciya na iya shafar yadda mahalarta ke amsa tambayoyi.
- Rukunin mutane ƙuntata: matasa masu lafiya, masu horon ƙarfi. Ba a iya fassara ga manya, masu matsalar barci, ko wadanda ba su yin ƙarfi ba.
- Control shine carbohydrate: ba a kwatanta whey da babu kari ba.
- Tsarin gwaji guda‑guda: ba ya ba da bayani game da tasirin dogon lokaci kan barci, farfadowa ko girman tsoka.
Abubuwan Da Za Ka Iya Amfani Da Su
Matsakaicin kashi da lokaci da aka yi amfani da su a gwaji: gram 40 na whey protein, a sha minti 30 kafin kwanciya, bayan horon ƙarfi.
Waɗanda za su iya gwadawa:
- Masu ɗaga nauyi da ke horar da dare kuma suka kasa cika buƙatar protein a kullum.
- Mutane da ke neman protein a lokacin kwanciya kuma suna sha’awar ganin tasirin kan barci da ciwo.
Waɗanda yakamata su guje shi ko su tuntuɓi likita da farko:
- Duk wanda ke da rashin lafiyar madara ko lactose mai tsanani.
- Masu cutar koda ko wasu yanayi da ke buƙatar takaita protein, su tattauna da likita.
- Wadanda ke barci lafiya kuma suna horar da safe, domin babu shaida da ke nuna musu fa'ida.
- Duk wanda ke tsammanin samun ƙaruwa a aikin gobe, domin ba a ga hakan ba.
Hanyar hankali: idan kana son gwadawa, ɗauke shi a matsayin gwaji na kanka. Ka riƙa daidaita sauran al'amuran maraice, ka rubuta yawan mintuna da ka ɗauka ka kwanta da yadda kake jin ciwo, sannan ka kwatanta da dare da ba ka sha shake.
Kammalawa
Ra'ayin “casein ita ce kawai protein da za a ci kafin kwanciya” bai samu tabbataccen knockout a nan ba, haka kuma whey ba ta samu cikakken nasara ba. Abin da wannan gwaji ya nuna shi ne: whey da aka sha kafin barci bayan ɗaga nauyi yana da alaƙa da saurin faduwa barci, ingantaccen barci, da ƙananan ciwo idan aka kwatanta da carbohydrate control, yayin da casein ba ta fito daban ba. Don tabbatar da wannan za a buƙaci manyan gwaje‑gwaje da suka ƙunshi gwaji kai‑tsaye na whey da casein tare da auna barci ta hanyoyin kimiyya masu inganci.
