1、 Concepts and Needs

Artificial fibers have a wide range of applications, from general clothing and industrial use to high-tech applications, and are ubiquitous in their functions and application areas. They have flourished in the textile market and some high-tech products have been highly praised at the World Olympic Games and other international competitions. Athletics are basically divided into three different types: high-level professional adventurers and record breaking competitors, and enthusiasts of competitive sports such as sports clubs and school competitions. These athletes generally have different functional needs, but comfort and high sensory functions are indispensable. For top competitors, the main functional requirements are low resistance, high strength, lightweight, and stretchability. For those who pursue comfort and health, the required functions include warmth, UV resistance, sweat absorption and quick drying, moisture permeability and waterproofing, deodorization, etc. Provide a relaxed and enjoyable feeling for the wearer, rather than a feeling of excessive fatigue and exhaustion. From a sensory perspective, fabric organization, feel, luster, color change, transparency, and other factors are important factors in fabric engineering.

2、 Requirements and Characteristics

The functional form of the human body will constantly change with age, especially after entering middle age when the changes in human body function, form, and psychology will be more significant. They are no longer developing towards a fixed direction like teenagers, but are evolving towards a discrete state of increasing differences between tall, short, fat, and thin individuals: large belly, thick waist, sagging buttocks, and hunchback are typical characteristics of some middle-aged and elderly people. Faced with such a special group, if sportswear manufacturers cannot produce samples uniformly without a unified size, they cannot go on the assembly line for production. Modifying the board shape and producing in small batches will increase costs. This is the last thing manufacturers want to do. Therefore, currently, middle-aged and elderly people only have the option to choose sportswear by being a bit overweight. Secondly, the body's ability to withstand external stimuli decreases among middle-aged and elderly people, especially those who are unwilling and unable to tolerate uncomfortable stimuli such as hard cuffs, short crotch, tight pants legs, and synthetic fabrics. However, traditional Chinese ethical and aesthetic values make middle-aged and elderly people more restrained and introverted when choosing clothing, lacking the bold and lively psychological characteristics of foreign elderly people in terms of clothing styles. Therefore, their requirements for color, style, fabric, function, and accessories of sportswear are particularly difficult to meet compared to young people. This has led to misunderstandings that middle-aged and elderly people are picky and difficult to serve. In fact, the consumption psychology of middle-aged and elderly people towards sportswear is similar to that of ordinary clothing. With the increase of age and experience, people's psychological qualities tend to mature and stabilize. Therefore, when choosing sportswear, middle-aged and elderly people generally require that the color tone should not be too dull or too colorful; Colors should be simple, bright, pure and elegant, both pleasing to the eye and extraordinary; The style should be steady and dignified, loose and appropriate, comfortable and generous, while the function should be gentle and warm, with good elasticity; Exquisite processing, high quality and reasonable price have reduced their choices of sportswear. Although many clothing experts and scholars in recent years have constantly called on the middle-aged and elderly to emancipate their minds, break through the shackles of the old Chinese traditional clothing aesthetic concepts and customs and age feelings on their clothes, and boldly choose beautiful colors and styles to show that the middle-aged and elderly still have youthful vitality, but the traditional concepts and customs formed in China for thousands of years are not easy to reverse overnight, and the yellow skin color of Chinese people is a color that makes clothing difficult to match.