Frequency of aerobic/resistance training in older women

描述（由申请人提供）：有氧和阻力联合训练对保持身体活动（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是未知的。这项研究建立在当前和过去的研究基础上，这些研究表明，训练引起的有氧健身、肌肉力量和PA的增加对于保持积极的生活方式、良好的身体组成和高骨密度非常重要。传统上，3天/周的联合训练被认为是最佳的，而最近的研究表明，1天/周的联合训练可能会产生与更频繁的训练相似的适应性。然而，我们之前和正在进行的研究表明，1天/周的有氧和阻力联合训练（C1）可能不足以诱导最佳适应，而3天/周的联合训练（C3）对老年人来说可能过于频繁。本研究将使我们能够比较C1、2 d/周联合训练（C2）和C3对健康、身体成分、PA的易用性、PA和总自由生活能量消耗（TEE）的影响。我们假设C2会导致肌肉大小、骨密度、力量、有氧能力、力量、PA、PA和TEE比C1或C3更大的增加。与慢性过度压力相关的循环细胞因子和心理情绪状态也将被检查。目的：我们将检查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的变化。设计：在训练前、训练后16周和训练后32周，我们将评估78名年龄、种族和BMI相匹配的黑人和白人女性（50 - 60岁），分为C1、C2或C3组。妇女将在普通临床研究中心接受代谢参数的评估。意义：本研究应深入了解联合训练频率对提高体能、PA易用性和维持高TEE的影响。这些信息对于我们了解如何提高老年人的幸福感、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.