Publications by authors named "Juan Carlos Santana"

Energy drinks are marketed for enhancing mental and physical performance, often containing ingredients beyond caffeine. This study investigated whether an energy drink (ED), Gorilla Mind, exerted greater effects on sustained attention, mood, handgrip strength, and push-up performance than a caffeine-matched control drink (CAF) in exercise-trained individuals (n = 21, age: 22 ± 5.9 years).

View Article and Find Full Text PDF

Introduction: Video games require precise motor skills, quick reaction times, and cognitive engagement. The tremendous growth of the electronic (e)-gaming industry has increased the demands for cognitive supplements (e.g.

View Article and Find Full Text PDF

Objective The purpose of this study was to investigate the effects of a multi-ingredient pre-workout supplement (MIPS) on mental and physical performance. Materials and methods Fourteen exercise-trained men (n=7) and women (n=7) completed this randomized, placebo-controlled, double-blind, counterbalanced, crossover trial. Participants consumed either a MIPS or a placebo in a randomized, counterbalanced order.

View Article and Find Full Text PDF

The purpose of this investigation was to determine the effects of supplementing with 100 mg daily of 5-Hydroxytryptophan (5-HTP) on indices of body composition in exercise-trained men and women. Sixty-one subjects volunteered for this investigation. Forty-eight subjects were randomized into a treatment ( = 31, 12 male/19 female; 100 mg 5-HTP daily; CLEANMOOD) or a placebo ( = 17, six male/11 female; maltodextrin).

View Article and Find Full Text PDF

This study compared the standing cable press (SCP) and the traditional bench press (BP) to better understand the biomechanical limitations of pushing from a standing position together with the activation amplitudes of trunk and shoulder muscles. A static biomechanical model (4D Watbak) was used to assess the forces that can be pushed with 2 arms in a standing position. Then, 14 recreationally trained men performed 1 repetition maximum (1RM) BP and 1RM single-arm SP exercises while superficial electromyography (EMG) of various shoulder and torso muscles was measured.

View Article and Find Full Text PDF

Objectives: This study was designed to explore whether parental activities such as repairing cars, welding, and rebuilding car batteries are risk factors for lead poisoning among Cuban refugee children in Miami-Dade County.

Methods: The authors performed a cross-sectional study of 479 children aged 12-83 months who had lived in Cuba during the six months prior to immigrating to the U.S.

View Article and Find Full Text PDF