Kristina Leigh Kendall

Edith Cowan University | ECU · School of Medical and Health Sciences

This study aimed to determine the energy requirements, physiological consequences, and recovery rate from the Australian Special Forces Selection Course. Ninety-three male soldiers (mean ± SD, 28.1 ± 3.6 years, 1.81 ± 0.1 m, 85.1 ± 8.1 kg) volunteered for this study. Body composition via dual-energy X-ray absorptiometry, hormones and resting metabo...

Velocity-based training (VBT) is an increasingly popular programming strategy used by strength and conditioning professionals to develop their athlete's ability to express force rapidly. To implement the varying forms of VBT effectively within their training regimes, strength and conditioning professionals need to understand the strengths and weakn...

The purpose of this study was to investigate the validity of three wrist‐worn devices for estimating energy expenditure (EE) and heart rate (HR) during close “Close Quarter Battle” (CQB). Fifty male soldiers (mean ± SD: age 30.9 ± 4.6 years, height: 1.81 ± 0.64 m and body mass 87.3 ± 7.7 kg) wore three activity monitors (Apple Watch 5, Garmin Forer...

The primary aim of this study was to investigate the stability of the six-repetition maximum (6RM) deadlift over the length of a five-day microcycle and whether the fatigue induced by maximal effort testing detrimentally impacted preparedness. Twelve participants performed four testing sessions, comprising a one-repetition maximum test and three 6R...

This study investigated the stability of three repetition maximum strength during the deadlift. Eleven participants performed four testing sessions comprising a one-repetition maximum test and three 3RM tests separated by 48 hours. Preparedness was assessed before each testing session using countermovement jumps and by measuring barbell velocity du...

Boffey, D, DiPrima, JA, Kendall, KL, Hill, EC, Stout, JR, and Fukuda, DH. Influence of body composition, load-velocity profiles, and sex-related differences on army combat fitness test performance. J Strength Cond Res 37(12): 2467–2476, 2023—The Army Combat Fitness Test (ACFT) became the U.S. Army's mandatory physical fitness test in April of 2022....

Background Individuals with non-small cell lung cancer (NSCLC) are burdened by long-lasting symptoms (e.g., dyspnea and fatigue) post-treatment. These symptoms often reduce physical activity levels and increase the risk of functional decline. Though we have previously proposed cluster-set resistance training to mitigate symptom burden in lung cance...

Nagatani, T, Kendall, KL, Guppy, SN, Poon, WCK, and Haff, GG. Effect of 3 different set configurations on kinematic variables and internal loads during a power snatch session. J Strength Cond Res 37(10): 1929–1938, 2023—The aim of this study was to investigate the effect of 3 different set configurations on kinematic variables and internal loads du...

Altering set configurations during a resistance training program can provide a novel training variation that can be used to modify the external and internal training loads that induce specific training outcomes. To design training programs that better target the defined goal(s) of a specific training phase, strength and conditioning professionals n...

This study aimed to investigate the effect of different set configurations on barbell trajectories during a series of power snatch sets. Ten strength-power athletes (height: 1.78 ± 0.09 m, body mass: 88.7 ± 14.3 kg, age: 28.9 ± 4.8 years) with at least 6 months of training experience performing the power snatch participated in this study. Each part...

Altering the configuration of a training set can add a unique training variation to a resistance training programme. Cluster sets can be used by strength and conditioning (S&C) professionals to modify the internal and external training loads that impact the training adaptations that result from resistance training. The purpose of this review is to...

Background Symptom burden remains a critical concern for individuals with non-small cell lung cancer (NSCLC) following the completion of treatment. The most common symptom clusters, dyspnea (shortness of breath) and fatigue, can contribute to physical decline, reductions in quality of life, and a higher risk of comorbidities and mortality. Dyspnea...

Force plates are commonly used when assessing vertical jumping performance but are not always affordable or practical tools for all testing situations. Twenty-four participants volunteered to take part in a study investigating the agreement between bilateral force plates and a new commercially available contact mat that records jump height, flight-...

Background If interplanetary travel is to be successful over the coming decades, it is essential that countermeasures to minimize deterioration of the musculoskeletal system are as effective as possible, given the increased duration of spaceflight associated with such missions. The aim of this review, therefore, is to determine the magnitude of dec...

Background: Symptom burden remains a critical concern for individuals with non-small cell lung cancer (NSCLC) following the completion of treatment. The most common symptom clusters, dyspnea (shortness of breath) and fatigue,can contribute to physical decline, reductions in quality of life, and a higher risk of comorbidities and mortality. Dyspnea...

Resistance training (RT) is a fundamental component of exercise prescription aimed at improving overall health and function. RT techniques such as cluster set (CS) configurations, characterized by additional short intra-set or inter-repetition rest intervals, have been shown to maintain acute muscular force, velocity, and ‘power’ outputs across a R...

Herda, AA, Smith-Ryan, AE, Kendall, KL, Cramer, JT, and Stout, JR. Evaluation of high-intensity interval training and beta-alanine supplementation on efficiency of electrical activity and electromyographic fatigue threshold. J Strength Cond Res 35(6): 1535-1541, 2021-The purpose of this study was to determine the effects of high-intensity interval...

PURPOSE: The purpose of this study was to assess the concurrent validity of a portable jump mat that measures flight-time for individual legs as well as overall flight-time against those calculated using bilateral, in-ground force plates during countermovement (CMJ) and squat jumps (SJ). METHODS: Sixteen healthy subjects (age: 27.67  4.32 years, h...

The physical qualities that underpin successful junior judokas requires continuing investigation. We investigated the physical and physiological characteristics of junior national level judokas. We tested 25 (15 male, 10 female) Indian judokas for absolute and relative strength (back-squat and bench-press one-repetition maximum (1RM) as well as iso...

Background Cluster sets (CSs) are a popular resistance training (RT) strategy categorised by short rest periods implemented between single or groups of repetitions. However, evidence supporting the effectiveness of CSs on acute intra-session neuromuscular performance is still equivocal. Objective The objective of this investigation was to determin...

Low muscle mass in individuals with cancer has a profound impact on quality of life and independence and is associated with greater treatment toxicity and poorer prognosis. Exercise interventions are regularly being investigated as a means to ameliorate treatment-related adverse effects, and nutritional/supplementation strategies to augment adaptat...

The increasing interest in weight loss has seen a concurrent rise in the supplemental use of thermogenics to aid weight loss efforts. To date, the effectiveness and safety of supplemental proprietary blend thermogenics, in conjunction with high-protein energy-restricted diets have not been thoroughly evaluated. The purpose of this study was to inve...

Recent investigations have identified that commercially available dietary supplements, containing a combination of thermogenic ingredients, can increase resting metabolic rate (RMR). Thermogenic dietary supplements can have a positive influence on RMR, but the magnitude can vary based on the active ingredient and/or combination of active ingredient...

While it is known that dietary supplements containing a combination of thermogenic ingredients can increase resting metabolic rate (RMR), the magnitude can vary based on the active ingredient and/or combination of active ingredients. The purpose of this study was to examine the effects of a commercially available thermogenic fat loss supplement on...

Objective: The objective of this study was to compare the chronic effects of different whey protein forms on body composition and performance when supplemented with resistance training. Methods: Resistance-trained men (N = 56, 21.4 ± 0.4 years, 79.5 ± 1.0 kg) participated in an 8-week resistance training regimen (2 upper-body sessions and 2 lowe...

Effects of MusclePharm Assault BlackTM on lower extremity spinal excitability and postactivation potentiation: A pilot study Brian Wallace*, Haley Bergstrom, Kelly Wallace Department of Kinesiology and Health Promotion, University of Kentucky, Lexington, KY 40506, USA Email: brian.wallace@uky.edu; brian.wallace@northern.edu Background: Caffeine h...

The purpose of this study was to compare the effects of various dosages of light emitting diode therapy (LEDT) on muscle fatigue, while performing a single leg extension to exhaustion. A total of 34 recreationally resistance trained athletes between the ages of 18 and 26 participated in four trials. Each trial included pre/post exercise blood lacta...

Methods: Twenty-three elite-level male rowers (mean± SD; age 24.6 ± 2.2 years; stature: 191.4 ± 7.2 cm; mass: 87.2 ± 11.2 kg) participated in this investigation. All body composition assessments were performed on the same day in random order, except for hydrostatic weighing (HW), which was measured last. FFM was evaluated using a 4C model, which i...

More females are classified as insufficiently active and may have little time for physical activity than males (28). Sufficient activity for adults includes a minimum of 30 minutes of moderate intensity aerobic exercise, five days per week or 20 minutes of vigorous intensity exercise three days per week, or a combination of these, in addition to th...

The purpose of the present study was to validate a seven site ultrasound imaging protocol to predict percent body fat (%BF) in a Division I football team. Body composition was estimated by ultrasound, seven site skinfolds, and the three compartment-water (3C-W) model of Siri, using Bioimpedance spectroscopy (BIS) to estimate total body water (TBW)...

Breast Cancer survivors can experience a myriad of physical and psychological benefits as a result of regular exercise. This study aimed to build on previous research using lower impact exercise programs by using an antigravity (Alter-G(®)) treadmill to administer cardiovascular training. The purpose of this study was to determine the effectiveness...

International Journal of Exercise Science 9(4): 471-481, 2016. The purpose of this study was to determine the efficacy of a nighttime multi-ingredient supplement on noninvasive markers of recovery in resistance trained and untrained individuals. Forty-nine participants, both trained (n=25) and untrained (n=24) completed the randomized, double blind...

This investigation aimed to compare hydrostatic weighing (HW) with near-infrared interactance (NIR) and skinfold measurements (SKF) in estimating body fat percentage (FAT%) in rowing athletes. FAT% was estimated in 20 elite male rowers (mean ± SD: age = 24·8 ± 2·2 years, height = 191·0 ± 6·8 cm, weight = 86·8 ± 11·3 kg, HW FAT% = 11·50 ± 3·16%) usi...

Physical inactivity has been recognized as one of the common modifiable risk factors for non-communicable diseases such as heart disease, stroke, cancer, chronic respiratory diseases and diabetes. Increased level of physical activity is very effective for health maintenance. In this book, experts from all over the world present evidence for therape...

Cerebral Palsy (CP) is a neuromuscular disease that affects individuals from birth, or shortly thereafter and continually progresses in severity throughout the lifespan of the affected individual. Symptoms of CP generally consist of difficulty generating force via limbs or diminished muscular strength, difficulty controlling movements in space due...

Chronic kidney disease (CKD) is a worldwide health problem that is associated with reduced physical capacity and quality of life. Individuals with CKD are inactive and have reduced physical functioning and performance. Increased levels of physical activity (PA) are related to clinically important outcomes for this population, specifically for those...

Background: Power training (PT) may be an effective modality to overcome muscle weakness for individuals with cerebral palsy (CP). The purpose of this project was to pilot test a PT intervention for individuals with CP. Methods: Using rolling recruitment, six participants were randomly assigned to either the control group (CG, n=3) or training gr...

BACKGROUND: Defining quality of life (QOL) for individuals with disabilities is difficult, in part, because the construct of QOL is evolving and often misconceptualized by a focus on traditional outcome measurements (e.g., Short Form-36). In populations without disabilities, QOL is often narrowly defined in terms of function. The purpose of the stu...

Aging is associated with physiological declines, notably a decrease in bone mineral density (BMD) and lean body mass (LBM), with a concurrent increase in body fat, and central adiposity. Interest in women and aging is of particular interest partly as a result of gender specific responses to aging, particularly as a result of menopause. It is possib...

Fifty‐six men (21.4±0.4 yrs) were randomly assigned to one of four double‐blinded treatments: 60 g/d maltodextrin (PLA) or 60 g/d whey protein from either a) 80% whey protein concentrate (WPC80), b) high lactoferrin WPC80 (WPC80+), or c) hydrolyzed WPC80 (WPH). All subjects participated in an 8‐week resistance training program. Two‐way repeated mea...

The purpose of this study was to assess body composition, lumbar spine bone mineral density (BMD), and rowing performance changes in collegiate-level rowers over a competition season. Eleven Division I collegiate rowers (mean ± SD; 21.4 ± 3.7y) completed six testing sessions throughout the course of their competition season. Testing included measur...

β-Alanine (BA) has been linked with oxidative protection. This study evaluated antioxidant properties of BA. Twenty-five men consumed BA or placebo for 4 weeks, and completed a 40-min run to induce oxidative stress. Blood draws were taken to measure 8-isoprostane, total antioxidant capacity, superoxide dismutase, and glutathione. BA had no signific...

Adolescents with disabilities report lower self-perceived quality of life and poor health outcomes due to disparities such as access to community resources. Both young people with intellectual disabilities and their families have less access to health-related services. Due to the existence of barriers due locality (i.e. rural versus urban) and disa...

The purpose of this study was to examine the validity and reliability of estimated parameters of the work-time relationship during cross-country ski ergometry using the traditional multi-trial critical power (CP) test and a 3 min 'all-out' test (3MT). Fourteen recreationally active male participants (mean±SD; age: 22.14 ± 2.85 yrs; height: 177.09 ±...

Purpose: Healthy People 2020 recommends that the health of individuals with disability be improved by improving life conditions and addressing the lack of resources for individuals with disabilities. HP 2020 further recommends the use of community-based interventions to improve quality of life of those living with a disability. Effective community...

Purpose: Young people with disabilities are faced with many restrictions for participation in the school and community, particularly in rural schools. These converging barriers create the need to examine the effect of context on students with disabilities. The purpose of this study was to compare health-related quality of life, health status, and a...

Evidence suggests CaHMB may impact muscle mass and/or strength in older adults, yet no long-term studies have compared its effectiveness in sedentary and resistance training conditions. The purpose of this study was to evaluate the effects of 24weeks of CaHMB supplementation and resistance training (3 d∙wk(-1)) or CaHMB supplementation only in ≥65y...

Background/objectives: To compare single estimations of fat-free mass (FFM) and to track FFM using single-frequency bioelectrical impedance analysis (BIA) and dual-energy X-ray absorptiometry (DXA) compared with a four-compartment (4C) model in healthy elderly Americans. Subjects/methods: Thirty-four men and thirty-eight women (Caucasian, ≥ 65 y...

Smith-Ryan, AE, Fukuda, DH, Stout, JR, and Kendall, KL. High-velocity intermittent running: effects of beta-alanine supplementation. J Strength Cond Res 26(10): 2798-2805, 2012-The use of β-alanine in sport is widespread. However, the effects across all sport activities are inconclusive. The purpose of this study was to evaluate the effects of β-al...

INTRODUCTION: Sarcopenia is the age-related loss of muscle and function. It is likely that losses in strength may occur prior to any detectible changes in lean mass. Muscle quality, a ratio of strength to lean mass, may be able to account for changes in both variables for early detection of sarcopenia. PURPOSE: To examine age- and gender-related di...

The purpose of this study was to characterize the adaptations imposed by four weeks of pre-competition judo training in youth athletes. It was hypothesized that anthropometric and sport-specific performance would improve during the preparation for a junior national championship event. Twenty youth athletes (mean±SD; chronological age: 13.1±3.2 year...

The purpose of this study was to determine the effects of the pre-workout supplement Assault™ (MusclePharm, Denver, CO, USA) on upper and lower body muscular endurance, aerobic and anaerobic capacity, and choice reaction time in recreationally-trained males. Subjective feelings of energy, fatigue, alertness, and focus were measured to examine assoc...