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  1. Farah Fauzi, Siti Balkis Budin, Shahrul Azwan, Leong, Kok Yuen
    MyJurnal
    Physical training is associated with oxidative stress and improvement in blood antioxidant status. In this study, we investigated the effects of training on plasma malondialdehyde (MDA) and 4-hydroxynonenal (4-HNE) as markers of lipid peroxidation, superoxide dismutase (SOD) activity, and ascorbic acid (AA) after a single bout of acute exercise. Twelve healthy, untrained young adult men were recruited for 5 weeks of aerobic training period. They were subjected to a rope-skipping exercise for 20 minutes at the intensity of 65-80% of heart rate reserve, thrice weekly. They also had to perform a single, acute bout of the same exercise protocol prior to and after training period. Venous blood samples were collected at resting condition (BL), immediately (0 h) and 24 hours (24 h) post acute exercise on both single bout sessions. Results showed that the pattern changes of oxidative stress response are quite similar on both acute sessions. The acute bouts of rope-skipping is associated with a significant increased (p = 0.001) in lipid peroxidation markers immediately after cessation of exercise, with a concomitant increases in antioxidant levels, albeit higher when compared to pre-training values (p = 0.001). These changes were followed by a significant decreased (p = 0.001) in all parameters, toward resting values, 24 hours thereafter. The training program seemed to induce a significant increase in MDA and 4-1-INE but also enhanced the antioxidant defense system namely SOD and AA among the untrained subjects.
  2. Farah Fauzi, Arimi Fitri Mat Ludin, Mahadir Ahmad, Kamarul Zaman Maidin
    MyJurnal
    Aktiviti fizikal yang kerap seperti senaman mempunyai implikasi yang baik terhadap kehidupan seharian kita terutamanya dalam aspek kesihatan dan pengurusan stres. Kajian ini adalah bertujuan untuk mengkaji kesan program senaman aerobik dengan protokol yang ditetapkan ke atas aras penanda tekanan terpilih di kalangan pelajar universiti semasa musim peperiksaan akademik. Lapan belas (n=18) mahasiswa tidak terlatih, dipadankan dengan umur dan BMI, telah dibahagikan kepada 2 kumpulan iaitu kumpulan intervensi (n=10) dan kawalan (n=8). Kumpulan intervensi menjalani senaman jenis aerobik berintensiti sederhana (60-75% daripada kadar denyut jantung maksimum), 3 kali seminggu selama 40-50 minit untuk setiap sesi selama 6 minggu. Darah vena diambil pada sebelum program senaman bermula (M1) dan selepas program senaman berakhir (M2) iaitu dalam minggu pertama musim peperiksaan. Kecergasan kardiorespiratori dan status stres psikologi diukur sebelum kedua-dua sesi pengambilan darah. Analisis biokima dijalankan untuk melihat aras malondialdehid (MDA) plasma dan kortisol serum. Hasil kajian menunjukkan bahawa program senaman selama 6 minggu ini telah merangsang penurunan aras MDA yang signifikan (F=19.58, p=0.002) semasa minggu peperiksaan berbanding aras sebelum program senaman bermula. Kumpulan intervensi juga menunjukkan aras MDA yang lebih rendah (t=-0.42, p=0.001) berbanding kumpulan kawalan semasa menduduki minggu peperiksaan. Walaubagaimanapun, tiada perbezaan yang signifikan pada aras kortisol dalam kedua-dua kumpulan walaupun terdapat penurunan yang sedikit pada kumpulan intervensi semasa minggu peperiksaan. Kajian ini mencadangkan bahawa program senaman yang dijalankan mampu dijadikan sebagai strategi yang berkesan untuk membantu pelajar menghadapi stres terutamanya sewaktu sesi akademik yang memberatkan.
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