高中摔者的肌肉力量 高中摔者的肌肉力量
Terry J Housh1, Glen O Johnson1, Dona J Housh1
1School of Health, Physical Education and Recreation, University of Nebraska-Lincoln, Lincoln, NE 68588-0229.
Pediatric exercise science
|November 8, 2024
概括
年长的高中摔运动员表现出更大的绝对肌肉力量. 这种增强的功率与增加的体重 (BW) 和无脂肪质量 (FFW) 有关,而不是固有的生理差异.
科学领域:
- 运动科学 运动科学 运动科学
- 运动生理学 运动生理学
- 青少年健康 青少年健康
背景情况:
- 肌肉力量对于摔等运动中的运动表现至关重要.
- 了解与年龄相关的权力变化可以为培训计划提供信息.
- 以前的研究还没有完全阐明青少年摔者的年龄,身体组成和肌肉力量之间的关系.
研究的目的:
- 研究高中摔运动员肌肉力量的年龄相关差异.
- 为了确定年轻和年长的青少年摔者之间是否存在平均功率 (MP) 和峰值功率 (PP) 的差异.
- 为了检查体重 (BW) 和无脂肪质量 (FFW) 对肌肉功率的影响.
主要方法:
- 共有155名高中摔运动员被分为两个年龄组:≤16岁 (年轻) 和>17岁 (年长).
- 试验对象进行了Wingate无氧试验,以评估平均功率 (MP) 和峰值功率 (PP).
- 使用水下称重来评估身体组成,以确定体重 (BW) 和无脂肪质量 (FFW).
主要成果:
- 在年轻和年长的摔组之间观察到绝对平均功率 (MP) 和峰值功率 (PP) 的显著差异 (p<0.05).
- 当肌肉力量调整为体重 (BW) 和无脂肪质量 (FFW) 时,这些群体之间的显著差异消失了.
- 老年人群表现出更高的绝对肌肉力量,这与他们更大的BW和FFW相关.
结论:
- 高中老年摔者的肌肉力量增加主要归因于他们更大的体重和无脂肪质量.
- 在这个人群中,与年龄相关的肌肉力量的增加与身体组成的成熟变化有关,而不是内在的生理增强.
- 这些发现强调了在评估青少年运动员肌肉力量时考虑身体大小和组成的重要性.
更多相关视频
12:59Improving Strength, Power, Muscle Aerobic Capacity, and Glucose Tolerance through Short-term Progressive Strength Training Among Elderly People
Published on: July 5, 2017
12.5K
11:30Measurement of Maximum Isometric Force Generated by Permeabilized Skeletal Muscle Fibers
Published on: June 16, 2015
25.4K
相关概念视频
Exercise and Muscle Performance
1.4K
Exercise induces a range of adaptations in muscle tissue, depending on the type and duration of activity. Such physical training can be broadly categorized into two types: endurance exercises and resistance exercises.
Endurance exercises
Endurance exercises involve running, swimming, or cycling, which require repetitive movements with low force output. When a person engages in endurance exercise, a few noticeable changes occur in their skeletal muscles. For instance, the number of capillaries...
Endurance exercises
Endurance exercises involve running, swimming, or cycling, which require repetitive movements with low force output. When a person engages in endurance exercise, a few noticeable changes occur in their skeletal muscles. For instance, the number of capillaries...
1.4K
Muscle Contraction
90.2K
90.2K
Power Expended by a Constant Force
7.3K
The relationship between work done and the time taken to do it can be explained using the concept of power. For example, several sprinters in a race may have the same velocity when they reach the finish line, therefore doing the same amount of work, but the winner does it in the least amount of time. Thus, power is defined as the rate of doing work. Since work can vary as a function of time, the average power is defined as the work done during a time interval, divided by the time interval.
7.3K
Power
11.2K
The concept of work involves force and displacement; meanwhile, the work-energy theorem relates the net work done on a body to the difference in its kinetic energy, calculated between two points on its trajectory. While none of these quantities or relations involves time explicitly, we know that the time available to accomplish work is often just as important as the amount of work itself. For example, sprinters in a race may have achieved the same velocity at the finish, therefore,...
11.2K
Mechanical Efficiency of Real Machines
639
The mechanical efficiency of a machine is a fundamental concept that describes how effectively a machine can convert input work into output work. According to this concept, the efficiency of a machine is equal to the ratio of the output work to the input work. An ideal machine, meaning a machine that has no energy losses, has an efficiency of one. This implies that the input work and the output work are equal.
However, in reality, no machine can be truly ideal, and all of them experience some...
However, in reality, no machine can be truly ideal, and all of them experience some...
639
Work and Power for Rotational Motion
5.1K
Work and power in rotational motion are completely analogous to work and power in translational motion. The total work done to rotate a rigid body through an angle 'θ' about a fixed axis is the sum of the torques integrated over the angular displacement. Hence, torque and angular displacement in rotational motion are analogous to force and linear displacement in translational motion, respectively.
Similarly, the power delivered to a system that is rotating about a fixed axis...
Similarly, the power delivered to a system that is rotating about a fixed axis...
5.1K
