A5071869097- Sports Performance and Training
- Sports injuries and prevention
- Exercise and Physiological Responses
- Cardiovascular and exercise physiology
- Muscle activation and electromyography studies
- Sports Dynamics and Biomechanics
- Lower Extremity Biomechanics and Pathologies
- Muscle metabolism and nutrition
- Muscle Physiology and Disorders
- Genetics and Physical Performance
- Adipose Tissue and Metabolism
- Sports Analytics and Performance
- Children's Physical and Motor Development
- Cardiovascular Effects of Exercise
- Knee injuries and reconstruction techniques
- Sport Psychology and Performance
- Motor Control and Adaptation
- Winter Sports Injuries and Performance
- Body Composition Measurement Techniques
- Shoulder Injury and Treatment
- Motivation and Self-Concept in Sports
- Cardiomyopathy and Myosin Studies
- Heart Rate Variability and Autonomic Control
- Metabolism and Genetic Disorders
- Thermoregulation and physiological responses
University of Kansas
2016-2025
Cambridge University Hospitals NHS Foundation Trust
2014-2023
University of Cambridge
2007-2021
Des Moines University
2021
University of Rhode Island
2020
Lindenwood University
2020
Mercyhurst University
2020
Coastal Carolina University
2020
Conway School of Landscape Design
2020
Charles Darwin University
2020
Successful training not only must involve overload but also avoid the combination of excessive plus inadequate recovery. Athletes can experience short-term performance decrement without severe psychological or lasting other negative symptoms. This functional overreaching will eventually lead to an improvement in after When athletes do sufficiently respect balance between and recovery, nonfunctional (NFOR) occur. The distinction NFOR overtraining syndrome (OTS) is very difficult depend on...
An 8-wk progressive resistance training program for the lower extremity was performed twice a week to investigate time course skeletal muscle adaptations in men and women. Maximal dynamic strength tested biweekly. Muscle biopsies were extracted at beginning every 2 wk of study from resistance-trained nontrained (control) subjects. The samples analyzed fiber type composition, cross-sectional area, myosin heavy chain content. In addition, fasting blood measured resting serum levels...
To examine endogenous anabolic hormonal responses to two different types of heavy resistance exercise protocols (HREPs), eight male and female subjects performed randomly assigned (i.e. P-1 P-2) on separate days. Each protocol consisted identically ordered exercises carefully designed control for load, rest period length, total work (J) effects. utilized a 5 RM 3-min periods had lower than P-2. P-2 10 1-min higher P-1. Whole blood lactate serum glucose, human growth hormone (hGH),...
Abstract Successful training must involve overload, but also avoid the combination of excessive overload plus inadequate recovery. Athletes can experience short‐term performance decrement, without severe psychological, or lasting other negative symptoms. This Functional Overreaching (FOR) will eventually lead to an improvement in after When athletes do not sufficiently respect balance between and recovery, Non‐Functional (NFOR) occur. The distinction NFOR Overtraining Syndrome (OTS) is very...
To determine if training status directly impacted the response to postactivation potentiation, athletes in sports requiring explosive strength (ATH; n = 7) were compared recreationally trained (RT; 17) individuals. Over course of 4 sessions, subjects performed rebound and concentric-only jump squats with 30%, 50%, 70% 1 RM loads. Jump 5 minutes 18.5 following control or heavy load warm-ups. Heavy warm-up consisted sets repetition at 90% back squat. squat performance was assessed a force...
The purpose of this study was to investigate the physiological and performance responses a simulated freestyle wrestling tournament after typical weight loss techniques used by amateur wrestlers.Twelve Division I collegiate wrestlers (mean +/- SD;19.33 1.16 yr) lost 6% total body during week before simulated, 2-d tournament. A battery tests performed at baseline immediately each individual match test included assessment for composition, reaction/movement time, lower upper power isokinetic...
Some recommendations suggest keeping the shank as vertical possible during barbell squat, thus knees from moving past toes. This study examined joint kinetics occurring when forward displacement of is restricted vs. such movement not restricted. Seven weight-trained men (mean +/- SD; age = 27.9 5.2 years) were videotaped while performing 2 variations parallel squats (barbell load body weight). Either permitted to move anteriorly toes (unrestricted) or a wooden barrier prevented (restricted)....
KRAEMER, W. J., K. HÄKKINEN, N. T. TRIPLETT-MCBRIDE, A. C. FRY, L. P. KOZIRIS, RATAMESS, J. E. BAUER, S. VOLEK, MCCONNELL, R. U. NEWTON, GORDON, D. CUMMINGS, HAUTH, F. PULLO, M. LYNCH, MAZZETTI, and H. G. KNUTTGEN. Physiological Changes with Periodized Resistance Training in Women Tennis Players. Med. Sci. Sports Exerc., Vol. 35, No. 1, pp. 157–168, 2003. Purpose To compare the physiological performance adaptations between periodized nonperiodized resistance training women collegiate tennis...
Few data exist on the long-term adaptations to heavy resistance training in women. The purpose of this investigation was examine effect volume exercise development physical performance abilities competitive, collegiate women tennis players. Twenty-four players were matched for ability and randomly placed into one three groups: a no control group, periodized multiple-set or single-set circuit group. No significant changes body mass observed any groups throughout entire period. However,...
Theoretical advantages exist of online hemodiafiltration (HDF) over high-flux hemodialysis (HD), but outcome data are scarce. Our objective was to compare outcomes between these modalities.We studied 858 incident patients in our incremental HD and HDF program during an 18-yr period. We compared outcomes, including survival, those who were treated predominantly with (>50% sessions) HD. Survival comparisons used a Cox model taking into account the time-varying proportion time spent on HDF. All...
Luebbers, PE, Fry, AC, Kriley, LM, and Butler, MS. The effects of a seven-week practical blood flow restriction program on well-trained collegiate athletes. J Strength Cond Res 28(8): 2270–2280, 2014—The purpose this study was to examine the 7-week (BFR) protocol used in conjunction with strength training measures muscular size American football players. Sixty-two participants were divided into 4 groups. Three groups completed traditional upper- lower-body split program. Two these also...
Abstract We evaluated the safety and efficacy of fully closed-loop insulin therapy compared with standard in adults type 2 diabetes requiring dialysis. In an open-label, multinational, two-center, randomized crossover trial, 26 dialysis (17 men, 9 women, average age 68 ± 11 years (mean s.d.), duration 20 10 years) underwent two 20-day periods unrestricted living, comparing Cambridge system using faster aspart (‘closed-loop’) a masked continuous glucose monitor (‘control’) random order. The...
Stone, MH, Hornsby, WG, Haff, GG, Fry, AC, Suarez, DG, Liu, J, Gonzalez-Rave, JM, and Pierce, KC. Periodization block periodization in sports: emphasis on strength-power training-a provocative challenging narrative. J Strength Cond Res 35(8): 2351-2371, 2021-Periodization can be defined as a logical sequential, phasic method of manipulating fitness recovery phases to increase the potential for achieving specific performance goals while minimizing nonfunctional over-reaching, overtraining,...
Abstract Cabarkapa, DV, D, Philipp, NM, and Fry, AC. Competitive season-long changes in countermovement vertical jump force-time metrics female volleyball players. J Strength Cond Res 38(2): e72–e77, 2024—Although force plates remain one of the most widely used tools for neuromuscular performance assessment applied sports-specific settings, there is still a lack scientific literature focused on studying (CVJ) team sports such as volleyball, especially within athlete population. Thus, purpose...
Weight-trained men [OT; n = 11; age 22.0 +/- 0.9 (SE) yr] resistance trained daily at 100% one-repetition maximum (1-RM) intensity for 2 wk, resulting in 1-RM strength decrements and an overtrained state. A control group (Con; 6; 23.7 2.4 yr) 1 day/wk a low relative (50% RM). After the OT exhibited slightly increased exercise-induced testosterone (preexercise 26.5 1.3 nmol/l, postexercise 29.1 5.9 nmol/l) testosterone-to-cortisol ratio 0. 049 0.007 0.061 0.006 decreased cortisol 656.1 98.1...
To date, no published studies have demonstrated resistance exercise-induced increases in serum testosterone adolescent males. Furthermore, few data are available on the effects of training experience and lifting Performance acute hormonal responses to weightlifting young Twenty-eight junior elite male Olympic-style weightlifters (17.3±1.4 yrs) volunteered for study. An exercise protocol using moderate high intensity loads low volume, characteristic many sessions, was examined. The directed...
The purpose of this study was to examine the relationship bone mineral density (BMD) muscular strength in highly trained young male athletes order gain insights concerning influence heavy resistance training on BMD. Twenty-five elite junior weightlifters (age, 17.4 +/- 1.4 yr) and 11 age-matched controls (16.9 1.1 volunteered for investigation. Measurements BMD (g.cm-2) utilizing dual energy x-ray absorptiometry were obtained lumbar spine (L2-4) proximal femur (neck; trochanter, Ward's...
Court sports often require more frequent changes of direction (COD) than field sports. Most court 180 degrees turns over a small distance, so COD in such might be best evaluated with an agility test involving short sprints and sharp turns. The purposes this study were to (a) quantify vertical horizontal force during task, (b) identify possible predictors court-sport-specific performance, (c) examine performance difference between National Collegiate Athletic Association Division I, II, III...