Results found: 2

Search results

Search:
in the keywords: skinfold thickness

Sort By:

Limit search:

Detecting overweight and obesity among young Syrian boys based on skinfold thickness

100%

Al-Bachir M., Ahhmad H.

Anthropological Review

2016

vol. 79

issue 1

35-46

There is no data on the prevalence of overweight and obesity in young Syrian boys. Therefore, the present study aimed to provide baseline and reference data on the prevalence of overweight and obesity among young Syrian boys using skin-fold thickness measurements and deuterium dilution (DD) as a reference method. The sample of 2470 healthy Syrian 18- to 19-year-old boys were enrolled in this study. SFTs were measured at the biceps (B), triceps (T), subscapular (SI) and suprailiac locations (SS) were done and validated using the DD technique as a reference method. Receiver operating characteristics (ROC) curve was drawn to determine appropriate cut-off points of the Σ2 limb SFT (T+B), Σ2 trunk SFT (SI+SS), Σ4 SFT (T+B+SI+SS) and Log Σ4 SFT for defining overweight and obesity. The overall prevalence of overweight and obesity in young Syrian boys, based on biceps SFT, triceps SFT, subscapular SFT, suprailiac SFT, Σ2 limb SFT, Σ2 trunk SFT, Σ4 SFT, logarithm Σ4 SFT, and DDT were 35.3%, 32%, 31.6%, 14.8%, 32.9%, 26.6%, 28.1%, 24.1%, 46.5%, respectively. Strongly positive correlation was found between SFT and total body fat in adolescents. For diagnosing overweight on the basis of Σ2 limb SFT, Σ2 trunk SFT, Σ4 SFT and logarithm Σ4 SFT, we propose the following cut-off points: 17.25 mm, 23.50 mm, 39.25 mm and 1.60, respectively. To predict obesity, Σ2 limb SFT, Σ2 trunk SFT, Σ4 SFT and logarithm Σ4 SFT threshold were increased to 23.25 mm, 32.50 mm, 55.25 and 1.75, respectively. Basing on SFT clearly leads to underestimates of the prevalence of weight problems among young boys. SFT measurement screen missed 11.2 to 31.7% of overall overweight and obesity cases.

Comparison between plethysmography and body fat equations in elite taekwondo athletes

84%

Qiuntero Monterrosa A., Fonseca S., Arc Chagnaud C., de la Rosa A.

Ido Movement for Culture. Journal of Martial Arts Anthropology

2022

vol. 22

issue 2

14-22

Background. In taekwondo, body composition and body fat percentage (BF%) are decisive factors in the result of combat between elite athletes. In recent years, air displacement plethysmography (ADP) has appeared as a reference method to evaluate BF%, while skinfold-based equations can be used in those cases in which people are unable to access such equipment. Problem and Aim: To determine the degree of agreement between the BF% estimated by the ADP method and by different skin-fold-based equations in male taekwondo athletes. Methods. 12 elite Brazilian male athletes (19.5± 3.8 years old) were evaluated using the International Society for the Advancement of Kinanthropometry (ISAK) protocol. BF% was estimated using 9 skinfold-based equations whose results were compared with those of the ADP method. Results. The mean of the BF% measured using the reference method was 8.9 ± 5.4. Agreement between skinfold based equations and ADP methods was examined by the Bland-Altman method. The narrowest limits of agreement relative to the reference were for the Katch & McArdle skinfold -based equation (−5.5, 5.9) containing 95% (11/12) of the score difference. The mean difference (bias) of the measurements between ADP and the anthropometric methods was (0.18±2.9). Conclusions. These results suggest that the Katch & McArdle equation, applying body density from the Brozek et al equation [1963], could be considered the most appropriate method to determine BF%, as its results are closest to those established by the ADP method. This equation presents good repeatability and concordance, small percentage error, and ease of use in the body fat evaluation of taekwondo athletes.

Wprowadzenie. W taekwondo, skład ciała i procentowa zawartość tłuszczu w organizmie (BF%) są czynnikami decydującymi o wyniku walki u elitarnych sportowców. W ostatnich latach pletyzmografia wyporu powietrza (ADP) stała się metodą referencyjną do oceny wartości procentowej zawartość tłuszczu w organizmie, podczas gdy równania oparte na fałdzie skórnym mogą być stosowane w przypadkach, gdy nie ma dostępu do odpowiedniego sprzętu. Problem i cel: Określenie stopnia zgodności pomiędzy wartością BF% ocenianą metodą ADP a różnymi metodami pomiaru fałdu skórnego u zawodników taekwondo. Metody. Dwunastu brazylijskich elitarnych sportowców (19,5± 3,8 lat) zostało ocenionych przy użyciu protokołu International Society for the Advancement of Kinanthropometry (ISAK). Procentowa zawartość tłuszczu w organizmie oceniano przy użyciu 9 równań opartych na pomiarze fałdu skórnego, których wyniki porównano z wynikami metody ADP. Wyniki. Średnia wartość BF% mierzonego metodą referencyjną wynosiła 8,9 ± 5,4. Zgodność pomiędzy metodami ADP i skinfold badano metodą Blanda-Altmana. Najwęższe granice zgodności w stosunku do metody referencyjnej wystąpiły dla równania Katcha i McArdle’a (-5,5, 5,9) i obejmowały 95% (11/12) ocenianych różnic. Średnia różnica pomiarów pomiędzy ADP a metodami antropometrycznymi wyniosła (0,18±2,9). Wnioski. Uzyskane wyniki sugerują, że równanie Katcha i McArdle’a, wykorzystujące gęstość ciała z równania Brożka i inn. [1963], można uznać za najbardziej odpowiednie do określania procentowej zawartości tłuszczu w organizmie, gdyż jego wyniki są najbardziej zbliżone do wyników uzyskanych metodą ADP. Równanie to charakteryzuje się dobrą powtarzalnością i zgodnością, małym błędem procentowym oraz łatwością wykorzystania w ocenie zawartości tłuszczu w organizmie zawodników taekwondo.

Refine search results

1 Anthropological Review

1 Ido Movement for Culture. Journal of Martial Arts Anthropology

1 Ahhmad H.

1 Al-Bachir M.

1 Arc Chagnaud C.

1 Fonseca S.

1 Qiuntero Monterrosa A.

1 de la Rosa A.

1 2022

1 2016

Search results

Detecting overweight and obesity among young Syrian boys based on skinfold thickness

Comparison between plethysmography and body fat equations in elite taekwondo athletes