Recent advancements in running shoe technology, particularly the Nike Vaporfly, have been shown to improve economy. Other brands now also developed new, advanced shoes with thicker midsole foams intended be more compliant and resilient, along a carbon-fibre plate. However, none of these new compared Vaporfly terms Therefore, we economy among seven different highly cushioned racing carbon plate: Hoka Rocket X (Hoka RX), Saucony Endorphin Pro (Saucony EP), Alphafly (Nike AF), Asics Metaspeed...

The Nike Vaporfly line of running shoes improves economy by ∼2.7% to 4.2% at speeds 13 18 km·h-1. It is unclear whether similar benefits are conferred slower speeds. Our purpose was determine the effects ZoomX Next% 2 (VFN2) on 10 and 12 km·h-1 compared with a mass-matched control (CTRL) shoe.Sixteen runners completed 4 × 5-minute trials both same day. Each shoe tested twice each speed in counterbalanced, mirrored sequence. Data displayed as mean (SD).A 2-way repeated-measures analysis...

Purpose : Determine the effects of advanced footwear technology (AFT) in track spikes and road-racing shoes on running economy (RE). Methods Four racing (3 AFT 1 control) 3 (2 were tested 9 male distance runners 2 visits. Shoes a random sequence over 5-minute trials visit (7 at 16 km·h −1 ; 5-min rest between trials) reverse/mirrored order 2. Metabolic data collected averaged across Results There significant differences conditions for oxygen consumption ( F = 13.046; P < .001) energy...

To determine the effects of creatine supplementation on blood lactate during incremental cycling exercise.Thirteen male subjects (M ± SD 23 2 yr, 178.0 8.1 cm, 86.3 16.0 kg, 24% 9% body fat) performed a maximal, test to exhaustion before (Pre) and after (Post) 6 d (4 doses/d 5 g + 15 glucose). Blood was measured at end each exercise stage protocol, threshold determined as achieving 4 mmol/L. Lactate concentrations were analyzed using (condition) × (exercise stage) repeated-measures ANOVA....

Endurance exercise may reduce blood pressure and improve vasodilatory capacity, thereby blunting the hypertensive response to stress. Therefore, we sought test efficacy of a novel model low-impact endurance training, aquatic treadmill (ATM), (BP) parameters.Sixty sedentary adults were randomized 12-wk either ATM (n = 36 [19 males 17 females], 41 ± 2 yr, 173.58 1.58 cm, 93.19 3.15 kg) or land-based (LTM, n 24 [11 males, 13 42 170.39 1.94 88.14 3.6 three sessions per week, progressing 500 kcal...

Advanced footwear technology, such as highly-cushioned midsoles with carbon-fiber plates, has been shown to improve running economy (RE) in road racing shoes. More recently, similar features have incorporated into track spikes; however, the impact of advanced spikes on RE yet be quantified. Furthermore, there no comparison PURPOSE: Quantify benefit compared a control spike and determine whether is optimized more an shoe or spike. METHODS: Four shoes (3 advanced, 1 control) 3 (2 were tested 9...

Post-activation potentiation (PAP) is a phenomenon characterized by improved muscle performance based on the previous contractile activity of muscle. The purpose this study was to determine effect different potentiating stimuli jump and sprint in 13 resistance trained, college-aged men women. After determining back squat 1 repetition max, subjects returned for testing separate days complete one four interventions (dynamic resistance, weighted plyometric, isometric, or control) randomized...

The lactate threshold is considered a key marker of endurance exercise performance and identification this important in writing an training program. Unfortunately, assessment the has traditionally required venous or capillary blood samples specialized meter to assess concentrations. Recently, consumer grade, non-invasive device was developed determine muscle oxygenation estimate threshold.The aim study validity noninvasive (NID) heart rate (LTHR).Twenty-one recreational athletes (14 females,...

Dyslipidemia is one factor cited for increased risk of cardiovascular disease (CVD) in American football players. However, players undergo physical conditioning which known to influence lipids. This study examined if the activity an season associated with changes lipids and a relationship exists between body composition. Fourteen division I freshmen had blood drawn prior summer training (T1), end competition (T2), spring (T3). Samples were analyzed total cholesterol (TCHL), HDL-C, LDL-C,...

Objective The purpose of the study was to compare acute bouts aquatic treadmill (ATM) and land (LTM) exercise on flow-mediated dilation, postexercise blood pressure, plasma nitrate/nitrite, atrial natriuretic peptide in untrained, prehypertensive men. Design In a counterbalanced, crossover design, 19 men completed ATM LTM separate days. Flow-mediated dilation measured pre-exercise 1-hr postexercise. Blood samples were obtained immediately analyzed for nitrate/nitrite peptide. A...

Running economy (RE) is defined as the oxygen consumption (VO

This study examined the effects of elliptical cross training on VO2max in recently-trained runners. 12 female and 8 male participants (mean  SD; age = 23.70 6.33 years, body mass index 24.85 5.89 kg/m2) completed an initial four-week run program, exercising four days/week, 30 minutes/day, at 80% maximal heart rate. was predicted based duration a Bruce graded-maximal treadmill test (GXT) prior to after training. After phase post-test, subjects volunteered for detrain group (n 6) or were...

PURPOSE: To examine correlations between several markers of cardiovascular (CV) and muscular fitness among police officers. METHODS: Sixty-five local officers were recruited (8 female, average age 35.6 ± 9.0 yrs, height 70.5 2.8 in, weight 91.8 18.7 kg, VO2 33.0 5.3 mL/kg/min). Data was taken from their annual health screening, which included a graded exercise test (GXT; Bruce protocol), pushups completed in 1 minute, situps handgrip strength, DEXA scan, bloodwork. Maximal oxygen uptake...

Advancements in running shoe technology, particularly the Nike Vaporfly, have been shown to improve economy. Other brands now also developed new, advanced shoes with a carbon-fiber plate and thicker, new midsole foams. However, none of these compared Vaporfly. PURPOSE: Compare effects 7 different carbon-plated 1 traditional racing on METHODS: Seven shoes: Hoka Rocket X (Hoka RX), Saucony Endorphin Pro (Saucony EP), Alphafly (Nike AF), Asics Metaspeed Sky (Asics MS), Vaporfly 2 VF2), New...

Aquatic treadmill (ATM) training has been shown to reduce blood pressure reactivity exercise a greater extent than land (LTM) in an older, overweight, and sedentary population (Greene, MSSE 2013).Less is known regarding the mechanisms or acute effects.Purpose: Determine vascular effects of ATM LTM healthy, recreationally active college males.Methods: Seven male subjects (21 ± 1 years; 175 8 cm; 73.7 9.5 kg; 24 3 kg/m 2 ) performed two, 30minute bouts (ATM LTM) at ~75% MHR randomized fashion,...

Running economy (RE) can be defined as the oxygen consumption or caloric unit cost required to move at a specific velocity. In addition runner’s maximal uptake (VO2max) and lactate threshold (LT), RE is key endurance performance determinant. Better advantageous it represents ability run lower relative percentage of VO2max given speed reduces rate energy depletion. Ground contact time (GCT) has been associated with RE, however not established how GCT imbalances between feet impact economy....

The Nike Vaporfly line of running shoes improve economy by 2.7-4.2% at speeds 13-18 km·hr-1. It is unclear if the same benefits are conferred slower speeds. Our purpose was to determine effects Next% 2 (VFN2) on 10 and 12 km·hr-1 compared a mass-matched, control (CTRL) shoe. Sixteen runners completed 4 x 5-minute trials both km‧hr-1 day. Each shoe tested twice each speed in counterbalanced, mirrored sequence. A two-way repeated measures ANOVA showed significant interaction for V̇O2 (p =...