Kirk L. English

Kirk L. English
University of Houston - Clear Lake | UHCL · Clinical Health and Applied Sciences

27.2
 · 
PhD

About

34
Publications
16,547
Reads
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871
Citations
Introduction
Kirk L. English currently works in the Department of Clinical Health and Applied Sciences at the University of Houston-Clear Lake. Kirk does research in Physiology, Nutrition and Metabolism, and Sports Medicine. A current project is 'Musculoskeletal Adaptations to Space Flight and Space Flight Analogs.'
Research Experience
August 2017 - present
University of Houston - Clear Lake
Position
  • Professor (Assistant)
July 2013 - August 2017
NASA
Position
  • Senior Scientist
August 2007 - June 2012
University of Texas Medical Branch at Galveston
Position
  • Graduate Assistant

Publications

Publications (34)
Article
Full-text available
Purpose Eccentric muscle actions are important to the development of muscle mass and strength and may affect bone mineral density (BMD). This study’s purpose was to determine the relative effectiveness of five different eccentric:concentric load ratios to increase musculoskeletal parameters during early adaptations to resistance training. Methods...
Article
Full-text available
Introduction: Long-duration spaceflight results in a loss of muscle strength that poses both operational and medical risks, particularly during emergency egress, upon return to Earth, and during future extraterrestrial exploration. Isokinetic testing of the knee, ankle, and trunk quantifies movement-specific strength changes following spaceflight...
Article
Full-text available
Background: Physical inactivity triggers a rapid loss of muscle mass and function in older adults. Middle-aged adults show few phenotypic signs of aging yet may be more susceptible to inactivity than younger adults. Objective: The aim was to determine whether leucine, a stimulator of translation initiation and skeletal muscle protein synthesis (...
Chapter
The mechanical unloading of spaceflight elicits a host of physiological adaptations including reductions in muscle mass, muscle strength, and muscle function and alterations in central interpretation of visual, vestibular, and proprioceptive information. Upon return to a terrestrial, gravitational environment, these result in reduced function and p...
Article
Full-text available
Historically, International Space Station (ISS) exercise countermeasures have not fully protected astronauts’ musculoskeletal and cardiorespiratory fitness. Although these losses have been reduced on more recent missions, decreasing the time required to perform in-flight exercise would permit reallocation of that time to other tasks. To evaluate th...
Article
Full-text available
Purpose To identify strength and performance thresholds below which task performance is impaired. Methods A new weighted suit system was used to manipulate strength-to-body-weight ratio during the performance of simulated space explorations tasks. Statistical models were used to evaluate various measures of muscle strength and performance on their...
Article
Introduction: This study investigated the safety and effectiveness of a new integrated aerobic and resistance exercise training prescription (SPRINT) using two different sets of exercise equipment: a suite of large ISS-like exercise equipment similar to what is found on the International Space Station (ISS) and a single device with aerobic and res...
Article
Full-text available
Purpose: The purpose of this investigation was to examine the reliability of the isometric mid-thigh pull (IMTP) and the relationship between IMTP peak force and deadlift 1 repetition maximum (1RM). Methods: Nine subjects (5 m/4 f; 40.6 ± 8.0 yr; 1.72 ± 0.10 m; 75.6 ± 13.4 kg) participated in this study. IMTP and deadlift 1RM were both performed...
Book
Exercise science practitioners have access to mountains of research findings, expert opinions, novel techniques, and program plans via blogs, fitness magazines, conference presentations, and peer-reviewed journals. To facilitate effective practice, practitioners must sift through this information and retain only the best evidence to form a sound ba...
Article
Full-text available
Bed rest, a ground-based spaceflight analog, induces robust atrophy of skeletal muscle, an effect that is exacerbated with increasing age. We examined the effect of 14 days of bed rest on skeletal muscle satellite cell content and fiber type atrophy in middle-aged adults, an understudied age demographic with few overt signs of muscle aging that is...
Article
Full-text available
It is well known that long-duration spaceflight results in deconditioning of neuromuscular and cardiovascular systems, leading to a decline in physical fitness. Upon reloading in gravitational environments, reduced fitness (e.g., aerobic capacity, muscular strength and endurance) could impair human performance, mission success, and crew safety. The...
Article
Full-text available
Long-duration spaceflight results in muscle atrophy and a loss of bone mineral density. In skeletal muscle tissue, acute exercise and protein (e.g., essential amino acids) stimulate anabolic pathways (e.g., muscle protein synthesis) both independently and synergistically to maintain neutral or positive net muscle protein balance. Protein intake in...
Article
Full-text available
The RDA for protein describes the quantity that should be consumed daily to meet population needs and to prevent deficiency. Protein consumption in many countries exceeds the RDA; however, intake is often skewed toward the evening meal, whereas breakfast is typically carbohydrate rich and low in protein. We examined the effects of protein distribut...
Patent
Full-text available
A mobility apparatus for a patient permitting improved mobility is disclosed. The apparatus includes a frame assembly, a locomotion assembly, a forearm support assembly, a kinematic and kinetic feedback assembly and optionally a back support assembly, where the apparatus provides mobility assistance, while permitting visualization of movement veloc...
Article
IntroductionInternational Space Station (ISS) crewmembers perform muscle strength and endurance testing pre- and postflight to assess the physiologic adaptations associated with long-duration exposure to microgravity. However, a reliable and standardized method to document strength changes in-flight has not been established. To address this issue,...
Article
Full-text available
The term "evidence-based" has begun appearing in the field of strength and conditioning. however, this term has yet to be formally introduced to the strength and conditioning community. Far from being a mere buzzword, evidence-based practice (ebp) is a defined process by which practitioners (in this instance, strength and conditioning professionals...
Article
Full-text available
Resistance exercise has been used as a means to prevent the musculoskeletal losses associated with spaceflight. Therefore, the National Aeronautics and Space Administration designed the Advanced Resistive Exercise Device (ARED) to replace the initial device flown on the International Space Station. The ARED uses vacuum cylinders and inertial flywhe...
Article
Full-text available
Evidence-based practice (EBP) is a concept that was popularized in the early 1990s by several physicians who recognized that medical practice should be based on the best and most current available evidence. Although this concept seems self-evident, much of medical practice was based on outdated textbooks and oral tradition passed down in medical sc...
Article
Full-text available
To highlight the losses in muscle mass, strength, power, and functional capacity incurred in older adults during bed rest-mediated inactivity and to provide practical recommendations for both the prevention and rehabilitation of these losses. In addition to sarcopenic muscle loss, older adults lose lean tissue more rapidly than the young during pro...
Thesis
Thesis (M.A.)--University of Houston-Clear Lake, 2004. Thesis chair: Terry L. Dupler, Ph. D. Degree granted by School of Human Sciences and Humanities. Includes bibliographical references (leaves 25-26).

Questions

Question (1)
Question
I'm in the United States and can't find an eccentric cycle ergometer available here. Does anyone know of one?

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