Frequency of aerobic/resistance training in older women

描述(申请人提供)：综合有氧和阻力训练对维持体力活动(PA)有独特的好处。然而，在老年人中结合这两种训练模式的最佳训练计划尚不清楚。这项研究建立在当前和过去的研究基础上，研究表明，训练导致的有氧适应能力、肌肉力量和PA的舒适度对于保持积极的生活方式、良好的身体成分和高骨密度非常重要。传统上，3d/wk组合训练被认为是最佳的，而最近的研究表明，1d/wk组合训练可能会产生与更频繁的训练类似的适应能力。然而，我们先前和正在进行的研究表明，1d/wk的有氧和阻力联合训练(C1)可能不足以诱导最佳适应，而3d/wk联合训练(C3)对老年人来说可能太频繁了。这项研究将使我们能够比较C1、2d/wk组合训练(C2)和C3训练对身体素质、身体成分、PA、PA的舒适度和总自由生活能量消耗(TEE)的影响。我们假设C2将导致肌肉大小、骨密度、力量、有氧能力、力量、PA、PA和TEE的舒适度比C2或C3更大的增加。与慢性压力过大有关的循环细胞因子和心理情绪状态也将被检测。目的：我们将检测16周和32周训练后循环细胞因子、情绪状态、肌肉大小、骨密度、有氧能力、力量、力量、PA、PA和TEE的舒适度的变化。设计：我们将评估年龄、种族和体重指数匹配的78名黑人和白人女性，在16周前、16周后和32周后分为C1、C2或C3组。女性将在综合临床研究中心接受代谢参数的评估。意义：这项研究应该为综合训练频率对提高体能、PA的舒适度和保持高发球区的效果提供洞察。这些信息对于我们理解如何改善老龄化人口的福祉、生活质量和独立性至关重要。

DESCRIPTION (provided by applicant): Combined aerobic and resistance training have unique benefits for maintaining a physical activity (PA). However, the optimal training program for combining these two modes of training in older adults is unknown. This study builds on current and past studies showing that training induced gains in aerobic fitness, muscle strength, and ease of PA are important for maintaining an active lifestyle, a favorable body composition, and high bone density. Traditionally 3 d/wk combined training has been felt to be optimal while recent studies suggest 1 d/wk combined training may create similar adaptations as more frequent training. However, our previous and ongoing studies suggest that 1 d/wk combined aerobic and resistance training (C1) may be insufficient stimulus to induce optimal adaptations and that 3 d/wk combined training (C3) may be too frequent a stimulus for older adults. This study will enable us to compare the effects of C1, 2 d/wk combined training (C2), and C3 on fitness, body composition, ease of PA, PA, and total free-living energy expenditure (TEE). We hypothesize that C2 will result in a larger increase in muscle size, bone density, strength, aerobic capacity, power, ease of PA, PA, and TEE than either C1 or C3. Circulating cytokines and psychological mood states linked to chronic overstress will also be examined. Objectives: We will examine changes in circulating cytokines, mood states, muscle size, bone density, aerobic capacity, strength, power, ease of PA, PA, and TEE following 16 and 32 wks training. Design: We will to evaluate 78 (>60 yrs) Black and White women matched for age, race, and BMI into C1, C2, or C3 groups prior to, after 16, and after 32 wks training. Women will undergo evaluation of metabolic parameters in a General Clinical Research Center. Significance: This study should provide insight into the effects combined training frequency has on improving fitness, ease of PA, and maintenance of a high TEE. Such information is critical to our understanding of ways to improve well being, quality of life, and independence of an aging population.