Fazla Kilolu Adolesanlarda Fiziksel Egzersizin Kardiyorespiratuvar Yan?ta Etkisi

摘要

Purpose: To evaluate the effects of an aerobic physical exercise program on the metabolic and cardiorespiratory response in overweight adolescents. Material and Method: This is a randomized study evaluating overweight adolescents divided into intervention and control groups before and after an aerobic exercise program. Pre- and post-intervention aerobic fitness was evaluated by a submaximal incremental test on a cycle ergometer. The training program lasted 12 weeks, when the intervention group exercised three times per week on a cycle ergometer at individual training intensities corresponding to lactate threshold (LT) and onset of blood lactate accumulation (OBLA). The individual workload was increased by 10% at 2-week intervals. Results: After intervention, an increase in workload levels corresponding to LT (33.3%) and OBLA (14.2%) was observed in the intervention group. In addition, the intervention group reached LT training intensity at a heart rate higher than that observed before intervention and that of controls (p<0.05). Discussion: The program resulted in positive changes in aerobic fitness and heart rate, improving exercise tolerance. Turk Jem 2012; 16: 14-8 ?zet Ama?: Fazla kilolu adolesanlarda, aerobik fiziksel egzersizin metabolik ve kardiyorespiratuvar yan?ta olan etkilerinin de?erlendirilmesi Gere? ve Y?ntemler: Bu ?al??ma, aerobik egzersiz program? ?ncesi ve sonras? giri?im ve kontrol grubu olarak ayr?lan fazla kilolu adolesanlar?n de?erlendirildi?i randomize bir ?al??mad?r. Giri?im ?ncesi ve sonras? aerobik fitnes, bisiklet ergometresinde submaksimal art?? testi ile de?erlendirildi. ?al??ma program? 12 hafta sürdü ve giri?im grubu taraf?ndan haftada ü? kere bisiklet ergometresi üzerinde laktat e?i?ini (LT) ve kanda laktat birikiminin ba?lang?c?n? (OBLA) i?aret eden bireysel ?al??ma yo?unlu?unda egzersiz yap?ld?. Bireysel ?al??ma yükü 2 hafta aral?klarla %10 artt?r?ld?. Bulgular: Giri?im sonras?, giri?im grubunda LT (%33,3) ve OBLA ’ n?n (%14,2) i?aret etti?i ?ekilde ?al??ma yükü düzeylerinde art?? g?zlendi. Ek olarak, giri?im grubu LT ?al??ma yo?unlu?una, giri?im ?ncesinde g?zlenenden ve kontrol grubundan daha yüksek bir kalp h?z?nda ula?t??? g?rüldü (p<0,05). Sonu?: Program, aerobik fitnes ve kalp h?z?nda olumlu de?i?iklikler ve egzersiz tolerans?nda düzelme sa?lam??t?r. Türk Jem 2012; 16: 14-8