Human calorimetry: Energy expenditure and substrate utilization easurements using a respiratory chamber

Hibi, Masanobu; Ando, Takafumi; Tanaka, Shigeho; Tokuyama, Kumpei

doi:10.7600/jpfsm.2.93

Cited by 4 publications

(2 citation statements)

References 70 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It should be emphasized that IC methods are more accessible than DC and have been increasingly used in clinical settings. In addition, they are practical, safe, noninvasive, and portable, which enhances their attractiveness [17,[21][22][23].…”

Section: Energymentioning

confidence: 99%

Nutrition for Female Soccer Players—Recommendations

2020

View full text Add to dashboard Cite

Soccer is one of the most popular sports in the world. As its number of players is increasing, the number of female players is also on the rise. However, there are limited data about how the diets of female soccer players should be designed. Thus, the aim of our work is to deliver concise nutritional recommendations for women practicing this sport. Based on a literature review, we emphasize that individual adjustment of the energy value of the diet is the key factor for the physical performance of female soccer players. Appropriate macronutrient intake makes it possible to achieve the proper energy value of the diet (5–10 g/kg body mass/day carbohydrates; 1.2–1.7 g/kg body mass/day proteins; <30% fats from energy). The micronutrients should be consumed in amounts corresponding to individual values recommended in national standards. Soccer players should pay special attention to the proper consumption of such micronutrients, as well as vitamins such as iron, calcium, and vitamin D. The right amount of fluid intake, consistent with the player’s needs, is crucial in maximizing exercise performance. The diet of a female practicing soccer is usually characterized with low energy values, which increases the risk of various health consequences related to low energy availability. Monitoring the diets of female soccer players is, therefore, necessary.

show abstract

Section: Energymentioning

confidence: 99%

Nutrition for Female Soccer Players—Recommendations

2020

View full text Add to dashboard Cite

show abstract

“…Indirect calorimetry calculates oxygen consumption, carbon dioxide production, and nitrogen balance from subjects with professional instruments such as BodyGem, Vmax Encore metabolic cart, Cosmed K4b2, and Cosmed K5 . While direct calorimetry, the most accurate method, measures metabolic rate through a known volume of water in an airtight and thermally insulated chamber, in which subjects stay during the test . All testing methods, whether indirect or direct gas calorimetry, are expensive, location-limited, nonminiaturized, inconvenient, and nonportable enough.…”

Section: Introductionmentioning

confidence: 99%

Innovative Metabolic Rate Sensing Approach for Probing Human Thermal Comfort

Zhang,

Liao,

et al. 2023

ACS Biomater. Sci. Eng.

View full text Add to dashboard Cite

The human metabolic rate has attracted increasing interest as it is the most critical parameter in thermal comfort evaluation, a challenging field, while it is always determined imprecisely. The main issue hampering metabolic rate portable measurement is a lack of reliable methods. Current measuring solutions are unsatisfactory because nonportable bulky size systems and disturbance masks are required. This paper proposes a novel metabolic rate measurement model, which we believe is the first of its kind, to accurately identify and predict human metabolism values via wearable technology. Based on a newly developed theory, the designed wearable metabolic rate sensor was fabricated to measure key parameters: heart rate, heat loss, and skin resistance. Together with the body muscle rate, the new final linear metabolic rate model showed easy prediction capability. Eight volunteers were invited for the experiment under three conditions under four activity intensity states. First, the results significantly verify that a linear relationship exists between the metabolic rate tested by the Quark CPET instrument and our proposed model, with a high coefficient of determination (R 2 ≈ 0.90). The correlation model is worth mentioning because it coincides with our hypothesis, with at least 95% overall accuracy and less than 2% uncertainty under each condition. Second, the most remarkable finding is that our model is exceedingly suitable (R 2 ≈ 0.90) for the same person, regardless of the experimental temperature. Finally, validation is conducted in a wider metabolic range, further strengthening confidence in our metabolic rate estimation approach. In summary, based on an innovative methodology, our novel metabolic rate sensor is wearable, comfortable, real-time achievable, and miniaturized compared with the existing equipment. This paper sheds new light on human metabolic rate measurement and prediction. Furthermore, our approach and designed sensor can be applied to evaluate indoor thermal comfort precisely, thus leading to reduced energy consumption.

show abstract

Comparison of Bicycle and Treadmill Ergometer Workload

Stork,

Novak

2023

2023 International Conference on Applied Electronics (AE)

View full text Add to dashboard Cite

Human calorimetry: Energy expenditure and substrate utilization easurements using a respiratory chamber

Cited by 4 publications

References 70 publications

Nutrition for Female Soccer Players—Recommendations

Nutrition for Female Soccer Players—Recommendations

Innovative Metabolic Rate Sensing Approach for Probing Human Thermal Comfort

Comparison of Bicycle and Treadmill Ergometer Workload

Contact Info

Product

Resources

About