Bianco A, Bellafiore M, Battaglia G, Paoli A, Caramazza G, Farina F, Palma A
Department of Sports Science (DISMOT), University of Palermo, Palermo, Italy.
J Sports Med Phys Fitness. 2010 Jun;50(2):159-65.
The aim of this study was to evaluate the body composition and physiological effects in young sedentary overweight women after an indoor cycle training period.
Fourteen subjects (22.6+/-2.1 yrs; 25-29.9 BMI) were trained for 12 weeks in a specific indoor cycling protocol (ICP) consisting of three sessions/week carried out in a fitness room. Body composition and physiological parameters were taken before the beginning of the study and after 12, 24 and 36 sessions.
We observed a reduction of 2.6% and 3.2% in body weight and of 4.3% and 5% in fat mass after 24 and 36 sessions respectively (P<0.05). Lean mass increased by 2.3% and 2.6% respectively after 24 and 36 sessions. Body circumferences diminished in response to ICP. Resting heart rate decreased by 6.5% and 9% respectively after 24 and 36 sessions. After the tenth week, we found a reduction of 11 beats.min-1 in average training heart rate, an increase of 0.5 mL/kg-1.min-1 in average training oxygen uptake and an increase of 8.6 Watts in average power output. Moreover, an increase in cardio-respiratory fitness was observed (37.1+/-4.3 vs. 40.2+/-4.6 mL/kg-1.min-1) after 36 sessions.
The decrease in body weight, without any restriction on food consumption, and the improvement in cardio-respiratory fitness suggests that ICP may be efficient for losing weight and preventing the increased risk of cardiovascular disease in young overweight women. Indoor cycling can be performed by young sedentary overweight women; however, it is fundamental to formulate training protocols which are intensity and length specific to the fitness level of the participants.
本研究旨在评估室内自行车训练一段时间后，久坐不动的年轻超重女性的身体成分和生理效应。
14名受试者（22.6±2.1岁；体重指数25 - 29.9）按照特定的室内自行车训练方案（ICP）进行了12周训练，该方案每周进行三次训练，在健身房进行。在研究开始前以及训练12、24和36次后，测量身体成分和生理参数。
我们观察到，分别在训练24次和36次后，体重下降了2.6%和3.2%，脂肪量分别减少了4.3%和5%（P<0.05）。在训练24次和36次后，瘦体重分别增加了2.3%和2.6%。身体周长因ICP训练而减小。静息心率在训练24次和36次后分别下降了6.5%和9%。在第十周后，我们发现平均训练心率降低了11次/分钟，平均训练摄氧量增加了0.5毫升/千克/分钟，平均功率输出增加了8.6瓦。此外，在训练36次后，观察到心肺适能有所提高（从37.1±4.3毫升/千克/分钟提高到40.2±4.6毫升/千克/分钟）。
在不限制食物摄入的情况下体重下降，以及心肺适能的改善表明，ICP对于年轻超重女性减肥和预防心血管疾病风险增加可能是有效的。年轻久坐不动的超重女性可以进行室内自行车训练；然而，制定针对参与者健身水平的强度和时长特定的训练方案至关重要。
