Victor L Katch
Biographic Data
| ID | 4283881 |
|---|---|
| NAME | Victor L Katch |
| GIVEN NAMES | Victor L |
| FAMILY NAME | Katch |
| SIGNATURE | KATCH V L |
| AFFILIATIONS | University of Michigan |
| VERIFIED | No |
| TOTAL WORKS | 9 |
| TOTAL CITATIONS | 21 |
| WORKS AS AUTHOR | 9 |
| WORKS AS EDITOR | 0 |
| FIRST PUBLICATION YEAR | 1979 |
| LATEST PUBLICATION YEAR | 1992 |
| H-INDEX | 3 |
Fat patterning of adolescents
The relationship between fatfold thickness and fat mass of 101 male and 66 female adolescents (10–16 yr) was examined with the allometric equation y = bx a . Body composition was assessed by underwater weighing and 5 fatfolds were measured: triceps, subscapular, suprailiac, abdominal, and thigh. Percent body fat ranged from 4.9% to 56.1%. The log of each fatfold thickness was plotted versus the log of fat mass. All the relationships were linear a…
New approach for estimating excess body fat from changes in abdominal girth
A new method is proposed for determining changes in percent body fat (%BF) based on the difference between an initial value for abdominal girth (AG) and a calculated “target” AG based on a desired %BF. Group data from large‐scale anthropometric surveys in the military were used to derive specific reference values for Q, defined as the ratio of AG at a desired %BF to F(√BM kg /Ht m ). For an individual, Q*F resulted in an AG that corresponded to a…
Basal metabolism of obese adolescents
To test if obese adolescents systematically conserve energy, comparisons of basal metabolic rate (BMR) of obese, normal, and lean male and female adolescents were made. Obese had eleevated values by as much as 23% (P ≤ 0.05) expressed as kJ · 24 hr -1 compared to the normal and lean. When indexed to body mass (kJ · kg-BM -1 · hr -1 ), the BMR for the obese was depressed by as much as -53% (P ≤ 0.01), and when indexed to fat free mass (kJ · kg-FFM…
Validity of anthropometric regression equations for predicting changes in body fat of obese females
The validity of ten popular anthropometric percent fat prediction equations for estimating changes in percentage of body fat for obese females was studied. Thirty‐one obese females (mean ± SEM, %fat = 36.7 ± 1.1%, body mass = 75.6 ± 1.7 kg, age = 32.8 ± 1.1 years) participated in a diet‐only, diet‐plus‐exercise, or exercise‐only program. Subjects lost 2.7 ± 0.3 fat percentage points and 3.0 ± 0.3 kg body mass during the 8‐week study. While many o…
Fat patterning of adolescents
Fat patterning of 110 adolescent males and 80 adolescent females was determined by principal components analysis of five skinfolds (triceps, subscaplular, iliac, abdominal and thigh). Densiometrically determined body fatness was employed to create two groups: obese (greater than 30% fat) and non-obese (less than 30% fat). Three fat patterning components emerged: trunk-extremity, upper-lower trunk and medial-lateral abdomen. The first two componen…
Relationship of fat patterning to coronary artery disease risk in obese adolescents
Fatness and fat patterning of 27 male and 33 female obese adolescents were identified by principal‐components analysis of five skinfolds (triceps, subscapular, iliac, abdominal, and thigh). Correlations were computed between the component scores, based on the eigen vectors, and anthropometric and physiological variables. Overall fatness, component I, was highly correlated with all anthropometric and body composition variables. Also, component I s…
Taxonomic identification of human fat patterns
The utility of taxonomic approaches in identification of fat patterning was evaluated using hierarchial cluster analysis on a sample of 64 female and 31 male subjects from 18 to 29 years of age. Four clusters, each composed of subjects with similar distributions of 17 skinfold thicknesses corrected for sex, size and total body fat, showed mean pattern profiles that variously contrasted fatness of the trunk and extremities. Average anthropometric …
Contribution of breast volume and weight to body fat distribution in females
Breast volume and body composition were measured in 45 adult females to determine the contribution of breast weight and breast volume to total body fat. Plaster casts were filled with sand of known density to obtain breast volume. Breast weight was computed as breast volume times its density. The correlation between total breast volume and percent body fat was r = .40. Breast weight ( X = 484 grams) accounted for 3.5 percent of the total weight o…
Measurement of breast volume in females
Breast volume measurements were made on 47 adult subjects using a casting method. After drying, fast-setting plaster casts were filled with sand of known density to a level approximating the curvature of the chest wall. The reliability of both sand filling and casting proved to be high, r = 0.97, and r = 0.99, respectively. The total variable error was 10.2%. The effects of position (standing versus lying) was investigated in a separate sample of…
Relationship of fat patterning to coronary artery disease risk in obese adolescents
Fatness and fat patterning of 27 male and 33 female obese adolescents were identified by principal‐components analysis of five skinfolds (triceps, subscapular, iliac, abdominal, and thigh). Correlations were computed between the component scores, based on the eigen vectors, and anthropometric and physiological variables. Overall fatness, component I, was highly correlated with all anthropometric and body composition variables. Also, component I s…
Taxonomic identification of human fat patterns
The utility of taxonomic approaches in identification of fat patterning was evaluated using hierarchial cluster analysis on a sample of 64 female and 31 male subjects from 18 to 29 years of age. Four clusters, each composed of subjects with similar distributions of 17 skinfold thicknesses corrected for sex, size and total body fat, showed mean pattern profiles that variously contrasted fatness of the trunk and extremities. Average anthropometric …
Contribution of breast volume and weight to body fat distribution in females
Breast volume and body composition were measured in 45 adult females to determine the contribution of breast weight and breast volume to total body fat. Plaster casts were filled with sand of known density to obtain breast volume. Breast weight was computed as breast volume times its density. The correlation between total breast volume and percent body fat was r = .40. Breast weight ( X = 484 grams) accounted for 3.5 percent of the total weight o…
Measurement of breast volume in females
Breast volume measurements were made on 47 adult subjects using a casting method. After drying, fast-setting plaster casts were filled with sand of known density to a level approximating the curvature of the chest wall. The reliability of both sand filling and casting proved to be high, r = 0.97, and r = 0.99, respectively. The total variable error was 10.2%. The effects of position (standing versus lying) was investigated in a separate sample of…
Contribution of breast volume and weight to body fat distribution in females
Breast volume and body composition were measured in 45 adult females to determine the contribution of breast weight and breast volume to total body fat. Plaster casts were filled with sand of known density to obtain breast volume. Breast weight was computed as breast volume times its density. The correlation between total breast volume and percent body fat was r = .40. Breast weight ( X = 484 grams) accounted for 3.5 percent of the total weight o…
Taxonomic identification of human fat patterns
The utility of taxonomic approaches in identification of fat patterning was evaluated using hierarchial cluster analysis on a sample of 64 female and 31 male subjects from 18 to 29 years of age. Four clusters, each composed of subjects with similar distributions of 17 skinfold thicknesses corrected for sex, size and total body fat, showed mean pattern profiles that variously contrasted fatness of the trunk and extremities. Average anthropometric …
Relationship of fat patterning to coronary artery disease risk in obese adolescents
Fatness and fat patterning of 27 male and 33 female obese adolescents were identified by principal‐components analysis of five skinfolds (triceps, subscapular, iliac, abdominal, and thigh). Correlations were computed between the component scores, based on the eigen vectors, and anthropometric and physiological variables. Overall fatness, component I, was highly correlated with all anthropometric and body composition variables. Also, component I s…
Fat patterning of adolescents
Fat patterning of 110 adolescent males and 80 adolescent females was determined by principal components analysis of five skinfolds (triceps, subscaplular, iliac, abdominal and thigh). Densiometrically determined body fatness was employed to create two groups: obese (greater than 30% fat) and non-obese (less than 30% fat). Three fat patterning components emerged: trunk-extremity, upper-lower trunk and medial-lateral abdomen. The first two componen…
Validity of anthropometric regression equations for predicting changes in body fat of obese females
The validity of ten popular anthropometric percent fat prediction equations for estimating changes in percentage of body fat for obese females was studied. Thirty‐one obese females (mean ± SEM, %fat = 36.7 ± 1.1%, body mass = 75.6 ± 1.7 kg, age = 32.8 ± 1.1 years) participated in a diet‐only, diet‐plus‐exercise, or exercise‐only program. Subjects lost 2.7 ± 0.3 fat percentage points and 3.0 ± 0.3 kg body mass during the 8‐week study. While many o…
New approach for estimating excess body fat from changes in abdominal girth
A new method is proposed for determining changes in percent body fat (%BF) based on the difference between an initial value for abdominal girth (AG) and a calculated “target” AG based on a desired %BF. Group data from large‐scale anthropometric surveys in the military were used to derive specific reference values for Q, defined as the ratio of AG at a desired %BF to F(√BM kg /Ht m ). For an individual, Q*F resulted in an AG that corresponded to a…
Basal metabolism of obese adolescents
To test if obese adolescents systematically conserve energy, comparisons of basal metabolic rate (BMR) of obese, normal, and lean male and female adolescents were made. Obese had eleevated values by as much as 23% (P ≤ 0.05) expressed as kJ · 24 hr -1 compared to the normal and lean. When indexed to body mass (kJ · kg-BM -1 · hr -1 ), the BMR for the obese was depressed by as much as -53% (P ≤ 0.01), and when indexed to fat free mass (kJ · kg-FFM…
Fat patterning of adolescents
The relationship between fatfold thickness and fat mass of 101 male and 66 female adolescents (10–16 yr) was examined with the allometric equation y = bx a . Body composition was assessed by underwater weighing and 5 fatfolds were measured: triceps, subscapular, suprailiac, abdominal, and thigh. Percent body fat ranged from 4.9% to 56.1%. The log of each fatfold thickness was plotted versus the log of fat mass. All the relationships were linear a…
Medicine (7 works) · Biology (6 works) · Body Composition Measurement Techniques (6 works) · Internal Medicine (6 works) · Body weight (4 works) · Endocrinology (4 works) · Mathematics (4 works) · Anthropometry (3 works) · Internal Medicine (3 works) · Obesity (3 works)