PDF(Pubmed)
Abstract：
Introduction: There is evidence that aging and obesity are associated with increased oxidative stress and chronic inflammation. High-intensity interval training (HIIT) may be superior to moderate-intensity continuous training (MICT) in anti-inflammatory and anti-obesity benefits. Therefore, the objective of this study is to determine which HIIT prescriptions will be more effective in reducing fat accumulation, inflammation, and improving metabolic adaptation and exercise performance in middle-aged and older overweight adults. Methods: Thirty-six middle-aged with overweight adults were divided into one of three groups: 1. L-HIIT group: the long-interval HIIT group (4 × 4 min Exercise/4 min Rest), 2. M-HIIT group: the medium-interval HIIT group (8 × 2 min Exercise/2 min Rest), 3. Control group: no exercise training intervention. All groups underwent the training stage for eight weeks (three sessions per week), followed by a detraining stage of four weeks in order to investigate the effects induced by different HIIT interventions on inflammation, metabolic adaptation, anti-fatigue and exercise performance, and fat loss Results: There was a significant physiological response in the change rate of heart rate (HR) after an acute L-HIIT session compared with an acute M-HIIT session (ΔHR: ↑49.66±16.09% vs ↑33.22±14.37%, p=0.02); furthermore, systolic blood pressure (SBP) and diastolic blood pressure (DBP) decreased significantly following a single L-HIIT session. After an eight-week training stage, the L-HIIT and M-HIIT groups exhibited a significant increase in aerobic capacity (ΔVO2peak), with values of +27.93±16.79% (p<0.001) and +18.39±8.12% (p<0.001), respectively, in comparison to the control group. Furthermore, in the L-HIIT group, the anaerobic power of relative mean power (RMP) exhibited a significant increase (p=0.019). However, following a four-week detraining stage, the adiponectin concentration remained 1.78 times higher in the L-HIIT group than in the control group (p=0.033). The results of blood sugar, blood lipids, body composition, and inflammatory markers did not indicate any improved it did not indicate any improvements from the two different HIIT protocols. Conclusions: The results indicate that an eight-week L-HIIT or M-HIIT intervention (three sessions per week, 32 minutes per session) may be an effective approach for improving aerobic capacity. It can be posited that L-HIIT may be a more advantageous mode than M-HIIT for enhancing anaerobic power, adipokine levels, and improving blood pressure in an aged and overweight population due to the induced physiological responses.
摘要：
简介：有证据表明，衰老和肥胖与氧化应激和慢性炎症增加有关。在抗炎和抗肥胖方面，高强度间歇训练（HIIT）可能优于中等强度连续训练（MICT）。因此,这项研究的目的是确定哪些HIIT处方将更有效地减少脂肪积累，炎症,改善中老年超重成年人的代谢适应和运动表现。方法：将36名超重的中年人分为三组：1.L-HIIT组：长间隔HIIT组（4×4分钟运动/4分钟休息），2.M-HIIT组：中间隔HIIT组（8×2分钟运动/2分钟休息），3.对照组：不进行运动训练干预。所有小组都接受了为期八周的训练阶段（每周三次），随后是四周的去训练阶段，以研究不同的HIIT干预对炎症的影响，代谢适应，抗疲劳和运动性能，和脂肪减少结果：与急性M-HIIT会话相比，急性L-HIIT会话后心率（HR）的变化率有明显的生理反应（ΔHR：49.66±16.09％vs33.22±14.37％，p=0.02)；此外，一次L-HIIT治疗后,收缩压(SBP)和舒张压(DBP)显著下降.经过八周的训练,L-HIIT和M-HIIT组的有氧能力（ΔVO2peak）显着增加，值分别为+27.93±16.79%（p<0.001）和+18.39±8.12%（p<0.001），分别,与对照组相比。此外，在L-HIIT组,相对平均功率（RMP）的无氧功率显着增加（p=0.019）。然而,经过四周的训练，L-HIIT组的脂联素浓度仍然是对照组的1.78倍（p=0.033）。血糖的结果，血脂,身体成分,和炎症标记物没有任何改善，它没有表明两种不同的HIIT方案有任何改善。结论：结果表明，为期八周的L-HIIT或M-HIIT干预（每周三次，每节32分钟）可能是提高有氧能力的有效方法。可以认为，L-HIIT可能是比M-HIIT更有利的模式，以增强无氧能力。脂肪因子水平,并由于诱发的生理反应而改善老年和超重人群的血压。
