Ken van Someren

Ken van Someren
Atlantic Technological University

Doctor of Philosophy

About

105
Publications
77,865
Reads
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3,950
Citations
Citations since 2016
34 Research Items
2523 Citations
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20162017201820192020202120220100200300400
20162017201820192020202120220100200300400
20162017201820192020202120220100200300400
Introduction
Exploring human wellbeing and performance in elite athletes and translating to help everyone achieve their best. A focus on exercise training, recovery and adaptation.

Publications

Publications (105)
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Highlights: Two-weeks of intensified training significantly increased training volume, load and strain eliciting a state of overreaching in trained male cyclists.Intensified training caused deteriorations in physical performance but did not influence cognitive measures.Mood and recovery-stress balance were negatively affected by intensified traini...
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Intensified periods of competition are common in many team sports, potentially leading to increased fatigue and reduced performance. The purpose of this study was to investigate the effect of repeated high-intensity sprint interval exercise on cognitive function, mood and perceptions of energy and fatigue. Twenty-four trained rugby players complete...
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This study examined whether intensity of endurance stimulus within a concurrent training paradigm influenced the phosphorylation of signaling proteins associated with the mTOR and AMPK networks. Eight male cyclists completed (1) resistance exercise (RES), 6 × 8 squats at 80% 1-RM; (2) resistance exercise and moderate intensity cycling of 40 min at...
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This study investigated the effects of custom-fitted compression garments (CG) worn during recovery over a multi-day training camp in elite judo players (judoka). A single blind, placebo-controlled study was carried out in 11 elite judoka, using a two-way crossover design. Two three-day training camps were completed in CG and placebo conditions in...
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Creatine dilution (D3‐cr) is a technique for estimating total skeletal muscle mass (SMM) with practical utility, but has not been applied in athletic populations where body composition may differ to that in the normal population. This study aimed to assess the agreement between SMM derived from both D3‐cr and that obtained from whole‐body Magnetic...
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Brown, F, Jeffries, O, Gissane, C, Howatson, G, van Someren, K, Pedlar, C, Myers, T, and Hill, JA. Custom-fitted compression garments enhance recovery from muscle damage in rugby players. J Strength Cond Res XX(X): 000-000, 2020-to evaluate the effects of custom-fitted compression garments (CG) on recovery from muscle damage in rugby players. Forty...
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It is a common requirement in tournament scenarios for athletes to compete multiple times in a relatively short time period, with insufficient recovery time not allowing full restoration of physical performance. This study aimed to develop a greater understanding of the physiological stress experienced by athletes in a tournament scenario, and how...
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DNA methylation is an important epigenetic modification that can regulate gene expression following environmental encounters without changes to the genetic code. Using Infinium MethylationEPIC BeadChip Arrays (850,000 CpG sites) we analysed for the first time, DNA isolated from untrained human skeletal muscle biopsies (vastus lateralis) at baseline...
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A variety of strategies exist to modulate acute physiological responses following resistance exercise aimed at enhancing recovery and/or adaptation processes. To assess the true impact of these strategies, it is important to know the ability of measures to detect meaningful change. We investigated the sensitivity of measures used to quantify acute...
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It is unknown if adult human skeletal muscle has an epigenetic memory of earlier encounters with growth. We report, for the first time in humans, genome-wide DNA methylation (850,000 CpGs) and gene expression analysis after muscle hypertrophy (loading), return of muscle mass to baseline (unloading), followed by later hypertrophy (reloading). We dis...
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Background: There is a necessity for numerous sports to develop strength and aerobic capacity simultaneously, placing a significant demand upon the practice of effective concurrent training methods. Concurrent training requires the athlete to perform both resistance and endurance exercise within a training plan. This training paradigm has been ass...
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Background Adequate recovery from exercise is essential to maintain performance throughout training and competition. While compression garments (CG) have been demonstrated to accelerate recovery, the literature is clouded by conflicting results and uncertainty over the optimal conditions of use. ObjectivesA meta-analysis was conducted to assess the...
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This study investigated the effect of protein supplementation on recovery following muscle-damaging exercise, which was induced with a concurrent exercise design. Twenty-four well-trained male cyclists were randomised to three independent groups receiving 20 g protein hydrolysate, iso-caloric carbohydrate or low-calorific placebo supplementation, p...
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Exercise-induced laryngeal obstruction (EILO) is a key differential diagnosis for respiratory symptoms in athletes and is particularly prevalent in aquatic athletes. A definitive diagnosis of EILO is dependent on laryngoscopy, performed continuously, while an athlete engages in the sport that precipitates their symptoms. This report provides the fi...
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Purpose: To identify the effects of 2 different grades of compression garment on recovery indices after strenuous exercise. Methods: Forty-five recreationally active participants (n = 26 male and n = 19 female) completed an eccentric-exercise protocol consisting of 100 drop jumps, after which they were matched for body mass and randomly but equa...
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Introduction: This case study reports a range of physiological characteristics in a two-time Tour de France champion. Methods: After body composition assessment (dual-energy x-ray absorptiometry), two submaximal cycling step tests were performed in ambient (20°C, 40%) and hot and humid (30°C, 60% [HH]) conditions from which measures of gross eff...
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The minimum exercise intensity that elicits ⩒O2max (i⩒O2max) is an important variable associated with endurance exercise performance. i⩒O2max is usually determined during a maximal incremental exercise test; however, the magnitude and duration of the increments used influence the i⩒O2max value produced by a given test. The aims of this study were t...
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The Sport and Exercise Scientist, Issue 48, Summer 2016. www.bases.org.uk Recommendations • Determine if a strategy is necessary or whether recovery can be attained without intervention • Understand the training and competition stressors causing reductions in performance and delayed recovery before applying the intervention • Determine the relative...
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Commercially available compression garments (CGs) demonstrate the enhanced recovery from exercise in some, but not all studies. It is possible that in some cases the degree of compression pressure (ComP) exerted is not sufficient to produce any physiological benefit. The aim of this investigation was to identify the levels of ComP exerted by commer...
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This study investigated the effects of two different hydrostatic pressures (seated or standing) during cold water immersion at attenuating the deleterious effects of strenuous exercise on indices of damage and recovery. Twenty four male well-trained games players (age 23 ± 3 years; body mass 81.4 ± 8.7 kg: O2max 57.5 ± 4.9 ml∙kg−1∙min−1) completed...
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While the research base is limited, studies have consistently reported poor oral health in elite athletes since the first report from the 1968 Olympic Games. The finding is consistent both across selected samples attending dental clinics at major competitions and more representative sampling of teams and has led to calls from the International Olym...
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While the research base is limited, studies have consistently reported poor oral health in elite athletes since the first report from the 1968 Olympic Games. The finding is consistent both across selected samples attending dental clinics at major competitions and more representative sampling of teams and has led to calls from the International Olym...
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Aim: This study evaluated the effects of protocol variation on the time spent exercising at ≥ 95% VO2max during cycle ergometer trials performed at the exercise intensity associated with VO2max (iVO2max). Methods: Nine male triathletes (age: 32 ± 10 years; body mass: 73.3 ± 6.1 kg; stature: 1.79 ± 0.07 m; VO2max: 3.58 ± 0.45 L.min--1) performed...
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Strenuous physical activity can result in exercise induced muscle damage. The purpose of this study was to investigate the efficacy of a lower limb compression garment in accelerating recovery from a marathon run. Twenty four subjects (female n= 7, male n= 17) completed a marathon run before being assigned to a treatment group or a sham treatment g...
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Commercially available compression garments (CGs) enhance recovery from exercise in some, but not all studies. It has been suggested that the minimum physiologically effective pressure is 17.3 mmHg at the lower leg decreasing to 15.1 mmHg at the thigh (Watanuki and Murata, 1994). CGs are usually fitted using a generalised sizing system based on hei...
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The purpose of the study was to determine the effects of compression garments on recovery following damaging exercise. A systematic review and meta-analysis was conducted using studies that evaluated the efficacy of compression garments on measures of delayed onset muscle soreness (DOMS), muscular strength, muscular power and creatine kinase (CK)....
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Purpose: This investigation aimed to ascertain a detailed physiological profile of recovery from intermittent-sprint exercise of athletes familiar with the exercise and to investigate if athletes receive a protective effect on markers of exercise-induced muscle damage (EIMD), inflammation, and oxidative stress after a repeated exposure to an ident...
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Background Exercise programmes are beneficial for cancer patients however evidence is limited in patients with multiple myeloma (MM), a cancer that is characterised by osteolytic bone disease, giving rise to high levels of bone morbidity including fractures and bone pain. Methods We conducted a single arm phase 2 study of an exercise programme (EP...
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Exercise programmes are beneficial for cancer patients however evidence is limited in patients with multiple myeloma (MM), a cancer that is characterised by osteolytic bone disease, giving rise to high levels of bone morbidity including fractures and bone pain.
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The common inheritance of approximately 20 000 genes defines each of us as human. However, substantial variation exists between individual human genomes, including 'replication' of gene sequences (copy number variation, tandem repeats), or changes in individual base pairs (mutations if <1% frequency and single nucleotide polymorphisms if >1% freque...
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Elite-level athletic training and competition is accompanied by the recovery of a series of physiological stressors. The physiological stress will vary considerably depending upon the specific exercise type, duration and intensity and also on the athletes' familiarisation to the exercise insult. It is well documented that when the exercise stress i...
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Nunan, D, Howatson, G, and van Someren, KA. Exercise-induced muscle damage is not attenuated by b-hydroxy-b-methylbutyrate and a-ketoisocaproic acid supplementation. J Strength Cond Res 24(x): 000–000, 2010—The purpose of this study was to examine the effects of combined oral b-hydroxy-b-methylbutyrate (HMB) and a-ketoisocaproic acid (KIC) suppleme...
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Some 12 years ago, a polymorphism of the angiotensin I-converting enzyme (ACE) gene became the first genetic element shown to impact substantially on human physical performance. The renin-angiotensin system (RAS) exists not just as an endocrine regulator, but also within local tissue and cells, where it serves a variety of functions. Functional gen...
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Achieving optimum athletic performance requires a balance of stress induced by training and competition with appropriate recovery. It is thought that the physiological stress associated with repeated high intensity intermittent sprint exercise over a number of weeks would be relatively low in well-trained individuals, perhaps due to familiarisation...
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The aim of this study was to examine the effect of concentric warm-up exercise on eccentrically induced changes in muscle strength, range of motion, and soreness of the elbow flexors. Ten resistance-exercise naive participants performed intermittent incremental eccentric actions (42 in total) of the elbow flexor muscles of each arm to induce muscle...
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The purpose of this study was to examine the effects of combined oral beta-hydroxy-beta-methylbutyrate (HMB) and alpha-ketoisocaproic acid (KIC) supplementation on indices of exercise-induced muscle damage (EIMD) after an acute bout of eccentric-biased exercise. Fourteen male subjects were allocated to 2 groups: a placebo group (3 g.d corn flour, N...
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As the winning margin in Olympic competition is so small, there is a continuous quest for improvements in the preparation of athletes at this standard. Therefore, even the smallest physiological improvements that result from modifications in training strategy, preparation regime or ergogenic aids are potentially useful. Unfortunately, there is a la...
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This investigation determined the efficacy of a tart cherry juice in aiding recovery and reducing muscle damage, inflammation and oxidative stress. Twenty recreational Marathon runners assigned to either consumed cherry juice or placebo for 5 days before, the day of and for 48 h following a Marathon run. Markers of muscle damage (creatine kinase, l...
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The aim of this investigation was to elucidate the effects of cold water immersions (CWIs) following damaging exercise on the repeated bout effect (RBE). Sixteen males performed two bouts of drop jump exercise separated by 14-21 days. Participants were equally, but randomly assigned to either a CWI (12-min CWI at 15 degrees C) or control group (12-...
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To determine the relative importance of anthropometric and physiological attributes for performance in the 1000-m, 500-m, and 200-m flatwater kayaking events. Eighteen competitive male kayakers completed performance trials over the 3 distances and a battery of anthropometric and physiological tests. Performance times (mean +/- SD) for 1000 m, 500 m...
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The purpose of this investigation was to examine the intra-subject reliability of electromechanical delay (EMD) and torque of the dominant and non-dominant elbow flexors during isometric and isokinetic muscle contractions repeated over five consecutive days. Eleven volunteers that were unfamiliar with isokinetic dynamometry participated in this stu...
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Sufficient levels of physical activity provide cardio-protective benefit. However within developed society sedentary work and inflexible working hours promotes physical inactivity. Consequently to ensure a healthy workforce there is a requirement for exercise strategies adaptable to occupational time constraint. This study examined the effect of a...
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Exercise-induced muscle damage (EIMD) can be caused by novel or unaccustomed exercise and results in a temporary decrease in muscle force production, a rise in passive tension, increased muscle soreness and swelling, and an increase in intramuscular proteins in blood. Consequently, EIMD can have a profound effect on the ability to perform subsequen...
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Dear Editor-in- ChiefLoss of fluid during prolonged exercise has been purported to be a cause of fatigue (Below et al., 1995; Walsh et al., 1994, for example). A plethora of information regarding 'optimal' fluid replacement strategies exists; perhaps the most prominent of these in the public domain is the position stand on exercise and fluid replac...
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Cancer patients frequently suffer with anxiety, fatigue, loss of well-being and functionality. In myeloma patients this is compounded by the effects of lytic bone disease, causing chronic pain and impaired mobility. The result is a decrease in physical fitness and loss of confidence in carrying out day-to-day activities, contributing to a reduced Q...