The role of forelimb muscles in frog jumping

前肢肌肉在青蛙跳跃中的作用

• 批准号: 6938869
• 负责人: RICHARD L. ESSNER
• 金额: $ 5.21万
• 依托单位: UNIVERSITY OF PENNSYLVANIA
• 依托单位国家: 美国
• 财政年份: 2005
• 资助国家: 美国
• 起止时间: 2005-05-09 至 2007-02-08
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/6938869
• 关键词: Rana; biomechanics; chordate locomotion; evolution; limb movement; muscle function; musculoskeletal system; physical model; postdoctoral investigator

DESCRIPTION (provided by applicant): This research will examine the role of the forelimb, trunk muscles, and iliosacral joint in frog jumping. The primary goal is to incorporate data from these elements into an existing realistic musculoskeletal model of the frog (Rana pipiens). To achieve this objective, I will utilize muscle mechanics experiments, whole animal jumping, and forward dynamic simulation to provide a detailed characterization of frog locomotion. The primary focus is understanding the design and function of the trunk muscles, iliosacral joint, and forelimbs in frog jumping. The reason for this focus is that these components are thought to play a key role in positioning the anterior part of the body with the hindlimb generated propulsive force. Preliminary results indicate the role of the forelimbs is more complex than is generally appreciated. The proposed study will test these ideas, with the end result being a more complete understanding of the frog musculoskeletal system from the molecular to the whole animal level. Once completed, the current model will be modified to reflect ancestral musculoskeletal designs. Comparing jumping performance among those designs will provide unique insight into the evolutionary history that produced the modem form-function complex in frogs.

描述（由申请人提供）：本研究将检查前肢，躯干肌肉和髂骶关节在青蛙跳跃中的作用。主要目标是将这些元素的数据纳入现有的现实的青蛙（蛙pipiens）的肌肉骨骼模型。为了实现这一目标，我将利用肌肉力学实验，整个动物跳跃，向前动态模拟提供一个详细的青蛙运动的特点。主要的焦点是了解蛙跳中躯干肌肉、髂骶关节和前肢的设计和功能。这一重点的原因是，这些组件被认为是在定位与后肢产生的推进力的身体前部的关键作用。初步结果表明，前肢的作用比人们普遍认为的要复杂得多。这项拟议中的研究将测试这些想法，最终结果是从分子到整个动物水平更完整地了解青蛙的肌肉骨骼系统。一旦完成，目前的模型将被修改，以反映祖先的肌肉骨骼设计。比较这些设计之间的跳跃性能将提供独特的洞察进化历史，产生了现代形式功能复杂的青蛙。