Functional beverages (FBs) can be made from fruits and/or vegetables, and serve as a healthier alternative to sugar‐rich beverages. Their periodic consumption can increase the daily intake of bioactive micronutrients like polyphenolic compounds or vitamins, which can be health promoting. However, some thermal processing methods can promote their degradation. Nonthermal methods can complement or substitute thermal ones, particularly, high‐intensity pulsed electric fields, high‐hydrostatic pressure, ultrasound, ultraviolet C treatment, molecular entrapment, and active packaging are promising options in this regard. These methods yield optimum results if the operational parameters are fine‐tuned, with the aid of response surface methodology or similar studies. Therefore, the object of the present work is to provide an overview on the main nonthermal methods that can be used to produce FBs of good sensorial qualities, while also preserving bioactive compounds and favoring their bioaccessibility, bioavailability, and health effects. Practical applications The use of nonthermal methods in the production of functional beverages can be used to simultaneously prevent the degradation and increase the bioaccessibility and bioavailability of health‐promoting vitamins (A, C, and E) and polyphenolic compounds present in the raw fruit/vegetable ingredients. While generally safe and effective, studies that focus on processing methods only consider in vitro data, which suggests the need for experiments that validate the effects of processing method on the consumer. Their continued use and study will permit their use in substitution of traditional thermal methods or in tandem to minimize their destructive effects on the molecules of interest.

Aim: To evaluate the predictive value of Borg’s category ratio-scale (CR-10; 1-10) toward the onset of blood lactate accumulation (OBLA). Methods: 91 young Mexicans performed three non-consecutive sub-maximal exercise tests. Heart rate (HR), blood lactate and oxygen uptake were recorded at each CR-10 rating. Regression equations, reliable HR and CR-10 cut-off points of OBLA were then calculated. Results: HR (86 beats/min) and CR-10 (4.5) predicted OBLA with the same certainty, regardless the subject’s body mass. CR-10, HR and oxygen uptake, independently explained more than 60% of the associated variance to OBLA. Conclusions: CR-10 is useful to predict OBLA with almost the same certainty that HR, regardless the subject’s body mass.

Promoción de la actividad física en niños del norte de México: efectividad de una intervención educativa RESUMEN La epidemia de obesidad infantil ha motivado la implementación de intervenciones en actividad física. El objetivo de este estudio fue conocer el efecto de una intervención educativa sobre el patrón y los conocimientos de actividad física (AF) en niños en edad escolar de 6 -8 años del norte de México. Se empleó un diseño clínico aleatorizado y controlado. Participaron 6 escuelas primarias: 3 escuelas de intervención (n = 80) y 3 de no intervención (n = 79). Se evaluó su antropometría (peso, talla e IMC/edad) y se registró el tipo y frecuencia semanal de la práctica de AF, antes y después de la intervención. Los grupos no mostraron diferencias antropométricas al inicio del programa. Los niños asignados a la intervención no solo mejoraron su conocimiento sobre AF recreativa (p = 0.03), sino que también incrementaron la práctica de caminar (+23%), bailar (+19%) y jugar futbol (+19%) (p ≤ 0.05). El programa educativo tuvo un efecto positivo sobre la participación y el conocimiento de las actividades recreativas de los niños. ABSTRACTThe childhood obesity epidemic has motivated the implementation of physical activity (PA) intervention programs. The aim of this study was to determine the effect of an educational intervention program on the pattern and knowledge of physical activity in 6 -8 year old school children in northern Mexico. A randomly controlled clinical design was employed, involving 6 elementary schools: 3 schools running the intervention program (n = 80) and 3 controls (n = 79). Anthropometry (weight, height and BMI/age) was evaluated, and the type and frequency of weekly practice of PA was recorded before and after the intervention. Anthropometric measurements were similar among all the groups at the beginning of the program. Children assigned to the intervention not only improved their knowledge about recreational PA (p = 0.03) but also increased their practice of walking (+23%), dancing (+19%), and playing soccer (+19%), (p ≤ 0.05). The educational program had a positive effect on participation and knowledge of the recreational activities of children. Palabras clave:Actividad física; niños; intervención educativa; estilo de vida; obesidad infantil.

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