Studi potong lintang dilakukan pada 27 penyanyi paduan suara dewasa sehat (16 laki-laki, 11 perempuan). Pengukuran WFM menggunakan aplikasi Praat® dilakukan sebelum dan sesudah latihan aerobik 30 menit menggunakan sepeda statis komersil yang disambungkan dengan aplikasi Zwift®.Peningkatan durasi WFM (18.37± 5.34 s to 21.04± 6.66 s, p = 0.008*) ditemukan setelah dilakukan latihan aerobik akut. Korelasi signifikan antara suara alto/sopran dan WFM (0.775**, p = 0.005), antara tekanan darah diastolik dan WFM (75.07± 10.33 mmHg to 79.85± 12.50 mmHg, p = 0.034*), serta denyut nadi dan WFM ditemukan (86.51± 11.64 beats/minute to 108.51± 18.22 beats/minute, p = <0.001*). Terdapat hubungan signifikan antara latihan aerobik akut dan suara alto/sopran dengan WFM pada penyanyi paduan suara sehat sedenter
Cross-sectional study was conducted with 27 sedentary singers (16 males, 11 females; age range 23-54 years). Measurements of MPT using Praat® were taken before and after 30-minute aerobic exercise using a static cycle connected to Zwift®. Increased MPT duration (18.37± 5.34 s to 21.04± 6.66 s, p = 0.008*) was found after acute aerobic exercise. Significant correlation between alto/soprano voice and MPT (0.775**, p = 0.005), between diastolic blood pressure and MPT (75.07± 10.33 mmHg to 79.85± 12.50 mmHg, p = 0.034*), also heart rate and MPT were found (86.51± 11.64 beats/minute to 108.51± 18.22 beats/minute, p = <0.001*). Significant association found between acute aerobic exercise and alto/soprano voice with MPT in healthy sedentary adult choir singers."
Metode: Penelitian ini merupakan suatu studi analitik observasional potong lintang antara dua kelompok. 33 pria dengan diagnosis alopesia androgenetik dan 33 pria tanpa alopesia androgenetik diikutsertakan dalam penelitian ini. Diagnosis alopesia androgenetik ditegakkan secara klinis. Kadar feritin serum dan total besi rambut pasien dibandingkan antara dua kelompok dan dikorelasikan dengan dengan diameter dan densitas rambut.
Hasil: Sebanyak 66 SP mengikuti penelitian dengan median usia 37-38 tahun. Feritin serum dan besi total rambut pada kelompok alopesia androgenetik lebih tinggi dibandingkan kelompok non-alopesia. Median 232 ng/mL, dan 222 ng/mL, Tidak terdapat perbedaan bermakna antara kedua kelompok (p = 0,758). Kadar besi total pada kelompok AAG lebih rendah dibandingkan non-alopesia. (22,65 ng/mL dan 39,67 ng/mL, p= 0,102). Terdapat korelasi positif lemah pada kelompok alopesia androgenetik derajat < 4 terhadap diameter rambut.
Kesimpulan: Kadar serum feritin dan besi total rambut pada pria non-alopesia lebih tinggi dibandingkan pria dengan alopesia androgenetik, namun tidak bermakna secara statistik.
Method: This is a cross-sectional analysis of two groups, 33 AGA men and 33 men without AGA were included in this study. Serum ferritin and hair level of iron were measured. Diagnosis of AGA was made clinically. Difference of serum ferritin and hair level of iron was analyzed and correlated with hair diameter and density.
Result: 66 men were included in this study. Median age was 37-38 year-old. Ferritin serum (232 ng/mL) and hair iron (39,67 ng/mL) was slightly higher in control group as compared to alopecia androgenetic group (ferritin 222 ng/mL and hair iron 22,65 ng/mL), but there was no statistically significant result (p = 0,758 and p = 0,102). Hair iron level correlates weakly positive with hair diameter in subgroup analysis.
Conclusion: Serum ferritin and hair iron level in non-alopecia population is higher compared to alopecia androgenetic men, but statistically insignificant"