Body proportions - Wikipedia
Human leg length, sitting height and their proportions are associated with In humans, between birth and puberty the legs grow more rapidly than other. A number of factors affect physical attractiveness, for instance height for men (e.g. () found no correlation between torso-to-leg ratio and waist-to-hip ratio . They are a widely used simplification of the human body that is not specific to. LLHR was calculated as the ratio of leg length to stature. . Leg-length was determined as the difference between body height and sitting height .. It is pointed out that human growth is highly sensitive during the prepubertal growth and.
A special feature of the human pattern is that between birth and puberty the legs grow relatively faster than other post-cranial body segments. For groups of children and youth, short stature due to relatively short legs i. The development of human body proportions is the product of environmental x genomic interactions, although few if any specific genes are known. However, research with non-pathological populations indicates that the environment is a more powerful force influencing leg length and body proportions than genes.
Leg length and proportion are important in the perception of human beauty, which is often considered a sign of health and fertility.
Introduction A dispassionate naturalist from another planet on a collecting mission to Earth might be satisfied with a sample of one or two specimens of Homo sapiens as representative of the species. Human observers of our species are not so easily contented. This is because from the anthropocentric perspective human beings display a variety of sizes, shapes, colors, temperaments and other phenotypic characteristics.
Professional anthropologists, physicians, and others have debated the cause and significance of human phenotypic variation for centuries. Serious proposals about the hierarchy of humanness appeared as recently as with the publication of The Origin of Races by Carleton Coon [ 3 ], Professor of Anthropology at the University of Pennsylvania.
Shea and Bailey [ 7 ] show that African pygmies are reduced in overall size and have a body shape that is allometrically proportional to the size reduction.
Discarding the racist history of the study of human morphology allowed research to focus on more meaningful biological, medical, social, and aesthetic implications of human body size and shape. In this article, we review the evidence that human body shape, especially the length of the legs relative to total stature, is an important indicator for epidemiology and environmental public health. Would it be similar, way longer or way shorter?
Leg Length, Body Proportion, and Health: A Review with a Note on Beauty - Semantic Scholar
Now stretch your arms out as far as they can reach. Your arms will be parallel to the ground. Hold one end of the piece of yarn you just cut off with the fingertips of your left hand.
Let your helper span the yarn toward the tip of your right hand's middle finger. Is piece long enough, way longer or way too short? What does this tell you about how your arm span compares to your height? For most people, their arm span is about equal to their height.
Mathematicians say the arm span to height ratio is one to one: The femur bone is the only bone in your thigh. To measure its length, sit down and span a new piece of yarn over your thigh from the hip joint to the edge of your knee and cut the yarn there. How many times would this piece of yarn go into the piece that is as long as you are tall?
Can you find a way to test your estimate? There are several ways to compare the length of the two pieces of yarn: You might cut several pieces of the length of your shorter string, lay them end to end next to your longer piece, and count how many you need. Another way is to fold the longer string into equal parts so the length of the folded string equals the length of the shorter string.
The number of folds needed is exactly the number of times your shorter string goes into your longer string.
- Human Body Ratios
- Body proportions
- Leg Length, Body Proportion, and Health: A Review with a Note on Beauty
Did you see that the length of your femur bone goes about four times into your height? You can also say that if you divide your height in four equal pieces, you have the length of your femur bone, or the length of your femur bone is one fourth of your height. Mathematicians call this a one to four ratio.
How many times would the length of your head fit into your height? Maybe four, six or eight times? To test six times, fold the yarn with length equaling your height into six equal pieces.
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Have your helper place a book flat on your head and hang the folded string from the side of the book. If the other end of the string is about level with your chin, your height would be about six times the length of your head, or your head to body ratio would be one to six.
Which number of folds fits best for you? There are many more bodily ratios you can explore: You have explored some ratios in your body and might wonder if these hold for other people as well. Do you think they hold for most people of your age?