Physiology Commons^™

Exercise Performance And Physiological Responses: The Potential Role Of Redox Imbalance, Kavey Vidal, Nathaniel Robinson, Stephen J. Ives

Health and Human Physiological Sciences

Increases in oxidative stress or decreases in antioxidant capacity, or redox imbalance, are known to alter physiological function and has been suggested to influence performance. To date, no study has sought to manipulate this balance in the same participants and observe the impact on physiological function and performance. Using a single-blind, placebo-controlled, and counterbalanced design, this study examined the effects of increasing free radicals, via hyperoxic exposure (FiO2 = 1.0), and/or increasing antioxidant capacity, through consuming an antioxidant cocktail (AOC; vitamin-C, vitamin-E, α-lipoic acid), on 5-kilometer (km) cycling time-trial performance, and the physiological and fatigue responses in healthy college-aged males. …

The Effect Of Concurrent Plyometric Training Versus Submaximal Aerobic Cycling On Rowing Economy, Peak Power, And Performance In Male High School Rowers, Julian D. Egan-Shuttler, Rohan Edmonds, Cassandra Eddy, Veronica O’Neill, Stephen J. Ives

Health and Human Physiological Sciences

BACKGROUND: Plyometric training has been shown to increase muscle power, running economy, and performance in athletes. Despite its use by rowing coaches, it is unknown whether plyometrics might improve rowing economy or performance. The purpose was to determine if plyometric training, in conjunction with training on the water, would lead to improved rowing economy and performance.

METHODS: Eighteen male high school rowers were assigned to perform 4 weeks of either plyometric training (PLYO, n = 9) or steady-state cycling below ventilatory threshold (endurance, E, n = 9), for 30 min prior to practice on the water (matched for training volume) …

Protein-Pacing And Multi-Component Exercise Training Improves Physical Performance Outcomes In Exercise-Trained Women: The Prise 3 Study, Paul J. Arciero, Stephen J. Ives, Chelsea Norton, Daniela Escudero, Olivia Minicucci, Gabe O’Brien, Maia Paul, Michael J. Ormsbee, Vincent Miller, Caitlin Sheridan, Feng He

Health and Human Physiological Sciences

The beneficial cardiometabolic and body composition effects of combined protein-pacing (P; 5-6 meals/day at 2.0 g/kg BW/day) and multi-mode exercise (resistance, interval, stretching, endurance; RISE) training (PRISE) in obese adults has previously been established. The current study examines PRISE on physical performance (endurance, strength and power) outcomes in healthy, physically active women. Thirty exercise-trained women (>4 days exercise/week) were randomized to either PRISE (n = 15) or a control (CON, 5-6 meals/day at 1.0 g/kg BW/day; n = 15) for 12 weeks. Muscular strength (1-RM bench press, 1-RM BP) endurance (sit-ups, SUs; push-ups, PUs), power (bench throws, BTs), blood …

Multi-Modal Exercise Training And Protein-Pacing Enhances Physical Performance Adaptations Independent Of Growth Hormone And Bdnf But May Be Dependent On Igf-1 In Exercise-Trained Men, Stephen J. Ives, Chelsea Norton, Vincent Miller, Olivia Minicucci, Jake Robinson, Gabe O'Brien, Daniela Escudero, Maia Paul, Caitlin Sheridan, Kathryn Curran, Kayla Rose, Nathaniel Robinson, Feng He, Paul J. Arciero

Health and Human Physiological Sciences

OBJECTIVE: Protein-pacing (P; 5-6meals/day @ 2.0g/kgBW/day) and multi-mode exercise (RISE; resistance, interval, stretching, endurance) training (PRISE) improves muscular endurance, strength, power and arterial health in exercise-trained women. The current study extends these findings by examining PRISE on fitness, growth hormone (GH), insulin-like growth factor-1 (IGF-1), and brain-derived neurotrophic factor (BDNF) response, cardiometabolic health, and body composition in exercise-trained men.

DESIGN: Twenty active males (>4daysexercise/week) completed either: PRISE (n=11) or RISE (5-6meals/day @ 1.0g/kgBW/day; n=9) for 12weeks. Muscular strength (1-repetition maximum bench and leg press, 1-RM BP, and 1-RM LP), endurance (sit-ups, SU; push-ups, PU), power (squat jump, SJ, and …