Taweesak Techakriengkrai

Optimizing high-intensity Jiu-Jitsu requires careful nutritional consideration, impacting body composition and performance. Balancing dietary intake with expenditure enhances athlete performance. This study, conducted with ten healthy Jiu-Jitsu athletes from the Jiu-Jitsu Association of Thailand, scrutinized their dietary intake compared to recommendations and its correlation with body composition to enhance performance and training adaptations. Participants completed three days of 24-hour dietary recalls. body composition was assessed using bioelectrical impedance analysis. Across both genders, total energy intake is inadequate, with carbohydrate consumption falling significantly below the recommended levels (p < .05). Female athletes showed significant positive correlations between dietary intake and body composition, notably with protein intake and skeletal muscle mass percentage and the skeletal muscle mass index (r = .895, and .963, respectively, p < .05). Conversely, male athletes displayed no significant correlations, but a broader analysis across genders revealed a strong positive correlation between protein consumption and muscle mass (r = .685, p < .05). The study highlights inadequate dietary intake, particularly in carbohydrates, among Jiu-Jitsu athletes during training, potentially compromising competition performance due to insufficient energy sources. Addressing these nutritional deficiencies is crucial to optimizing performance and body composition, emphasizing the need for dietary practice improvements among Jiu-Jitsu athletes.

The aim of the study is to determine dietary lutein and zeaxanthin (L/Z) consumption and to evaluate its association with macular pigment optical density (MPOD) in Thai subjects. Methods. This study was a cross-sectional study. A total of 120 ophthalmologically healthy subjects aged between 40 and 72 years were recruited from Bangkok and the vicinity area. Demographic data were collected using a questionnaire, while a semiquantitative food frequency questionnaire assessed the L/Z intake. MPOD was determined using the reflectometry method (VISUCAM 500®, Carl Zeiss Meditec AG). Pearson’s correlation coefficient analyzed the relationship between L/Z consumption and MPOD. Results. The mean age of the participants was 50.7 ± 7.5 years. The mean consumption of L/Z was 3.03 ± 2.65 mg per day. The mean MPOD was 0.102 ± 0.023 density units. Consumption of foods rich in L/Z, including ivy gourd (r = 0.217, ), Chinese flowering cabbage (r = 0.194, ), balsam pear (r = 0.193, ), lettuce (r = 0.182, ), sweet corn (r = 0.181, ), and pumpkin (r = 0.181, ), was positively associated with the mean optical density (mean MPOD). Consumption of green onion (r = 0.212, ) was positively associated with the sum of optical densities (MPOD volume). In contrast, chilli pepper consumption showed a negative association with mean MPOD (r = −0.220, ) and amaranth showed a negative association with MPOD volume (r = −0.283, ). No association was found between total L/Z consumption and MPOD. Conclusion. L/Z consumption is low among Thais living in Bangkok and the vicinity area, which may not be sufficient to ensure eye health, and total L/Z consumption is not associated with MPOD.

The aim of this study was to determine macular pigment optical density (MPOD) and identify factors that correlate with its level in Thai subjects.This research was a cross-sectional study. Two hund...