Tesis

Gambaran Laju keringat Pelari Rekreasional Terlatih Saat Berlari Selama Satu Jam di Jakarta = The Sweat Rate of Trained Recreational Runners When Running for One Hour in Jakarta.

Latar Belakang. Masalah kesehatan yang kerap muncul pada olahraga berlari banyak disebabkan oleh dehidrasi. Penelitian ini bertujuan untuk mengetahui laju keringat pelari rekreasional terlatih agar masalah kesehatan terkait dehidrasi dapat dicegah. Metode. Penelitian eksperimental ini melibatkan dua puluh tiga pelari rekreasional terlatih yang diminta untuk berlari selama satu jam pada pagi hari di ruang terbuka kota Jakarta. Berat badan subjek ditimbang (dengan ketelitian hingga 0,1 kg) sebelum dan setelah berlari. Volume cairan yang diminum selama berlari dibebaskan sesuai keinginan subjek dan diukur dalam satuan mL. Selisih berat badan kemudian dikalkulasikan dengan volume asupan cairan selama latihan untuk memperoleh laju keringat. Laju keringat juga dianalisa hubungannya dengan luas permukaan tubuh, indeks massa tubuh, intensitas latihan (% HRmax), dan riwayat latihan subjek (mileage dan lama berlatih). Hasil. Rata-rata laju keringat yang dikeluarkan subjek mencapai 1.2 (1.2 ± 0,3) L/jam. Berdasarkan persentase kehilangan berat badan, 18 dari 23 subjek mengalami dehidrasi setelah berlari selama satu jam, dengan rata-rata penurunan berat badan mencapai 1.4 (1.4 ± 0,4) %. Selama latihan, rata-rata subjek minum sebanyak 311 mL. Laju keringat memiliki korelasi positif dengan luas permukaan tubuh (r = 0,71, p < 0,01) dan juga indeks massa tubuh (r= 0,77, p < 0,01) subjek. Tidak ditemukan adanya korelasi signifikan antara laju keringat dengan intensitas dan riwayat latihan subjek. (p > 0,05) Kesimpulan. Pelari memiliki laju keringat yang lebih tinggi dibandingkan dengan asupan minumnya selama berlari. Hal ini menyebabkan terjadinya dehidrasi. Untuk itu diperlukan edukasi mengenai strategi rehidrasi yang sesuai dengan kebutuhan individual untuk mencegah terjadinya masalah kesehatan akibat dehidrasi.
Kata Kunci: laju keringat, pelari rekreasional terlatih, Jakarta


Background. Health problems that often appear in running are mostly caused by dehydration. This research aims to know the sweat rate of trained recreational runners so that health problems related to dehydration can be prevented. Method. This experimental study involved twenty three trained recreational runners who were asked to run for one hour on the morning day in the open space of the city of Jakarta. Subject was weighed (with precision up to 0,1 kg) before and after running. The volume of fluid intake during the test is up to the subject and is measured in units of mL. Body weight that were loss during running is then calculated with the volume of fluid intake to get the sweat rate. The sweat rate is also analyzed for it’s relation to the body surface area, body mass index, exercise intensity (% HRmax), and exercise history (mileage and time since routine practice). Results. The average sweat rate of the subject was 1.2 (1.2 ± 0,3) L / hour. Based on the percentage of body weight loss, 18 out of 23 subjects were dehydrated after running for one hour, with the average weight loss reaches 1.4 (1.4 ± 0,4)%. During practice, the average subject drinks as much as 311 mL. Sweat rate has a positive correlation with body surface area (r = 0,71, p < 0,01) and also body mass index (r = 0,77, p < 0,01). There was no significant correlation found between the sweat rate and the exercise intensity nor training history of the subject. (p > 0,05) Conclusion. Runners have sweat rate that is higher than the fluid intake, causing dehydration. Therefore education is needed regarding the rehydration strategy that suits the individual needs to prevent health problems related to dehydration.
Keywords: sweat rate, trained recreational runner, Jakarta