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Outputs (57)

Protein dose requirements to maximise skeletal muscle protein synthesis after repeated bouts of resistance exercise in young trained women (2023)
Journal Article

Studies examining the effect of protein (PRO) feeding on post resistance exercise (RE) muscle protein synthesis (MPS) have primarily been performed in men, and little evidence is available regarding the quantity of PRO required to maximally stimulate... Read More about Protein dose requirements to maximise skeletal muscle protein synthesis after repeated bouts of resistance exercise in young trained women.

Feasibility of conducting a cohort randomized controlled trial assessing the effectiveness of a nurse-led package of care for knee pain (2023)
Journal Article

Objective To evaluate the feasibility of conducting a cohort randomized controlled trial (RCT) of a nurse-led package of care for knee pain and determining a treatment sequence for use in a future trial. Methods This study was an open-label, thr... Read More about Feasibility of conducting a cohort randomized controlled trial assessing the effectiveness of a nurse-led package of care for knee pain.

Prevalence of physical frailty, including risk factors, up to 1 year after hospitalisation for COVID-19 in the UK: a multicentre, longitudinal cohort study (2023)
Journal Article

Background: The scale of COVID-19 and its well documented long-term sequelae support a need to understand long-term outcomes including frailty. Methods: This prospective cohort study recruited adults who had survived hospitalisation with clinically d... Read More about Prevalence of physical frailty, including risk factors, up to 1 year after hospitalisation for COVID-19 in the UK: a multicentre, longitudinal cohort study.

The impact of physical inactivity on glucose homeostasis when diet is adjusted to maintain energy balance in healthy, young males (2023)
Journal Article

Background & aims: It is unclear if dietary adjustments to maintain energy balance during reduced physical activity can offset inactivity-induced reductions in insulin sensitivity and glucose disposal to produce normal daily glucose concentrations an... Read More about The impact of physical inactivity on glucose homeostasis when diet is adjusted to maintain energy balance in healthy, young males.

Caloric restriction improves glycaemic control without reducing plasma branched-chain amino acids or keto-acids in obese men (2022)
Journal Article

Higher plasma leucine, isoleucine and valine (BCAA) concentrations are associated with diabetes, obesity and insulin resistance (IR). Here, we evaluated the effects of 6-weeks very-low calorie diet (VLCD) upon fasting BCAA in overweight (OW) non-diab... Read More about Caloric restriction improves glycaemic control without reducing plasma branched-chain amino acids or keto-acids in obese men.

Human adaptation to immobilization: Novel insights of impacts on glucose disposal and fuel utilization (2022)
Journal Article

Background: Bed rest (BR) reduces whole-body insulin-stimulated glucose disposal (GD) and alters muscle fuel metabolism, but little is known about metabolic adaptation from acute to chronic BR nor the mechanisms involved, particularly when volunteers... Read More about Human adaptation to immobilization: Novel insights of impacts on glucose disposal and fuel utilization.

The effects of elective abdominal surgery on protein turnover: A meta-analysis of stable isotope techniques to investigate postoperative catabolism (2022)
Journal Article

Background & aims Elective surgery induces skeletal muscle wasting driven by an imbalance between muscle protein synthesis and breakdown. From examination of diverse stable isotope tracer techniques, the dynamic processes driving this imbalance ar... Read More about The effects of elective abdominal surgery on protein turnover: A meta-analysis of stable isotope techniques to investigate postoperative catabolism.

Metabolomics as an Important Tool for Determining the Mechanisms of Human Skeletal Muscle Deconditioning (2021)
Journal Article

Muscle deconditioning impairs both locomotor function and metabolic health, and is associated with reduced quality life and increased mortality rates. Despite an appreciation of the existence of phenomena such as muscle anabolic resistance, mitophagy... Read More about Metabolomics as an Important Tool for Determining the Mechanisms of Human Skeletal Muscle Deconditioning.

Feasibility RCT of neuromuscular electrical stimulation; an Intervention to Maintain and improve neuroMuscular function during periods of Immobility (IMMI): Protocol (2021)
Working Paper

East Midlands Research into Ageing Network (EMRAN) is a research collaboration across the East Midlands to facilitate collaborative applied clinical research into ageing and the care of older people. EMRAN was set up by NIHR CLAHRC East Midlands and... Read More about Feasibility RCT of neuromuscular electrical stimulation; an Intervention to Maintain and improve neuroMuscular function during periods of Immobility (IMMI): Protocol.

The Regulatory Roles of PPARs in Skeletal Muscle Fuel Metabolism and Inflammation: Impact of PPAR Agonism on Muscle in Chronic Disease, Contraction and Sepsis (2021)
Journal Article

The peroxisome proliferator-activated receptor (PPAR) family of transcription factors has been demonstrated to play critical roles in regulating fuel selection, energy expenditure and inflammation in skeletal muscle and other tissues. Activation of P... Read More about The Regulatory Roles of PPARs in Skeletal Muscle Fuel Metabolism and Inflammation: Impact of PPAR Agonism on Muscle in Chronic Disease, Contraction and Sepsis.

Review article: The aetiology of fatigue in inflammatory bowel disease and potential therapeutic management strategies (2021)
Journal Article

Background: Fatigue is the inability to achieve or maintain an expected work output resulting from central or peripheral mechanisms. The prevalence of inflammatory bowel disease (IBD) fatigue can reach 86% in active disease, persisting in 50%-52% of... Read More about Review article: The aetiology of fatigue in inflammatory bowel disease and potential therapeutic management strategies.

Muscle and tendon adaptations to moderate load eccentric vs. concentric resistance exercise in young and older males (2021)
Journal Article

Resistance exercise training (RET) is well-known to counteract negative age-related changes in both muscle and tendon tissue. Traditional RET consists of both concentric (CON) and eccentric (ECC) contractions; nevertheless, isolated ECC contractions... Read More about Muscle and tendon adaptations to moderate load eccentric vs. concentric resistance exercise in young and older males.

Potential role for pyruvate kinase M2 in the regulation of murine cardiac glycolytic flux during in vivo chronic hypoxia (2021)
Journal Article

Carbohydrate metabolism in heart failure shares similarities to that following hypoxic exposure, and is thought to maintain energy homeostasis in the face of reduced O2 availability. As part of these in vivo adaptations during sustained hypoxia, the... Read More about Potential role for pyruvate kinase M2 in the regulation of murine cardiac glycolytic flux during in vivo chronic hypoxia.

Age-related changes in muscle architecture and metabolism in humans: The likely contribution of physical inactivity to age-related functional decline (2021)
Journal Article

In the United Kingdom (UK), it is projected that by 2035 people aged >65 years will make up 23 % of the population, with those aged >85 years accounting for 5% of the total population. Ageing is associated with progressive changes in muscle metabolis... Read More about Age-related changes in muscle architecture and metabolism in humans: The likely contribution of physical inactivity to age-related functional decline.

Immobilisation induces sizeable and sustained reductions in forearm glucose uptake in just 24h but does not change lipid uptake in healthy men (2021)
Journal Article

© 2021 The Authors. The Journal of Physiology published by John Wiley & Sons Ltd on behalf of The Physiological Society Key points: The trajectory, magnitude and localisation of metabolic perturbations caused by immobilisation (IMM) are unresolved.... Read More about Immobilisation induces sizeable and sustained reductions in forearm glucose uptake in just 24h but does not change lipid uptake in healthy men.

Antecubital Vein Cannula Position Impacts Assessment of Forearm Glucose Uptake During an Oral Glucose Challenge in Healthy Volunteers (2020)
Journal Article

© 2020 Lippincott Williams and Wilkins. All rights reserved. Introduction Skeletal muscle is a major site for whole-body glucose disposal, and determination of skeletal muscle glucose uptake is an important metabolic measurement, particularly in rese... Read More about Antecubital Vein Cannula Position Impacts Assessment of Forearm Glucose Uptake During an Oral Glucose Challenge in Healthy Volunteers.

Associations between plasma branched chain amino acids and health biomarkers in response to resistance exercise training across age (2020)
Journal Article

© 2020 by the authors. Licensee MDPI, Basel, Switzerland. Leucine, isoleucine and valine (i.e., the branched chain amino acids, BCAA) play a key role in the support and regulation of tissue protein regulation and also as energy substrates. However, p... Read More about Associations between plasma branched chain amino acids and health biomarkers in response to resistance exercise training across age.

The East Midlands Knee Pain Multiple Randomised Controlled Trial Cohort Study: Cohort Establishment and Feasibility study protocol (2020)
Journal Article

Introduction: Knee pain and osteoarthritis (OA) are a common cause of disability. The UK National Institute of Health and Care Excellence (NICE) OA guidelines recommend education, exercise and weight-loss advice (if overweight) as core interventions... Read More about The East Midlands Knee Pain Multiple Randomised Controlled Trial Cohort Study: Cohort Establishment and Feasibility study protocol.

East Midlands knee pain multiple randomised controlled trial cohort study: cohort establishment and feasibility study protocol (2020)
Journal Article

© 2020 BMJ Open Introduction Knee pain due to osteoarthritis (OA) is a common cause of disability. The UK National Institute for Health and Care Excellence OA guidelines recommend education, exercise and weight loss advice (if overweight) as core int... Read More about East Midlands knee pain multiple randomised controlled trial cohort study: cohort establishment and feasibility study protocol.

Submaximal Eccentric Cycling in People With COPD: Acute Whole-Body Cardiopulmonary and Muscle Metabolic Responses (2020)
Journal Article

© 2020 American College of Chest Physicians Background: Eccentric cycling (ECC) may be an attractive exercise method in COPD because of both low cardiorespiratory demand and perception of effort compared with conventional concentric cycling (CON) at... Read More about Submaximal Eccentric Cycling in People With COPD: Acute Whole-Body Cardiopulmonary and Muscle Metabolic Responses.

Major elective abdominal surgery acutely impairs lower limb muscle pyruvate dehydrogenase complex activity and mitochondrial function (2020)
Journal Article

© 2020 The Author(s) Background & aims: This post hoc study aimed to determine whether major elective abdominal surgery had any acute impact on mitochondrial pyruvate dehydrogenase complex (PDC) activity and maximal mitochondrial ATP production rates... Read More about Major elective abdominal surgery acutely impairs lower limb muscle pyruvate dehydrogenase complex activity and mitochondrial function.

Mitochondrial DNA copy number associates with insulin sensitivity and aerobic capacity, and differs between sedentary, overweight middle-aged males with and without type 2 diabetes (2019)
Journal Article

Background/objectives: Increased risk of type 2 diabetes mellitus (T2DM) is linked to impaired muscle mitochondrial function and reduced mitochondrial DNA copy number (mtDNAnum). However, studies have failed to control for habitual physical activity... Read More about Mitochondrial DNA copy number associates with insulin sensitivity and aerobic capacity, and differs between sedentary, overweight middle-aged males with and without type 2 diabetes.

Testosterone therapy induces molecular programming augmenting physiological adaptations to resistance exercise in older men (2019)
Journal Article

Background: The andropause is associated with declines in serum testosterone (T), loss of muscle mass (sarcopenia) and frailty. Two major interventions purported to offset sarcopenia are anabolic steroid therapies and resistance exercise training (RE... Read More about Testosterone therapy induces molecular programming augmenting physiological adaptations to resistance exercise in older men.

Impact of transcutaneous neuromuscular electrical stimulation or resistance exercise on skeletal muscle mRNA expression in COPD (2019)
Journal Article

Background: Voluntary resistance exercise (RE) training increases muscle mass and strength in patients with chronic obstructive pulmonary disease (COPD). Nonvolitional transcutaneous neuromuscular electrical stimulation (NMES) may be an alternative s... Read More about Impact of transcutaneous neuromuscular electrical stimulation or resistance exercise on skeletal muscle mRNA expression in COPD.

Greater loss of mitochondrial function with ageing is associated with earlier onset of sarcopenia in C. elegans (2018)
Journal Article

Sarcopenia, the age-related decline of muscle, is a significant and growing public health burden. C. elegans, a model organism for investigating the mechanisms of ageing, also displays sarcopenia, but the underlying mechanism(s) remain elusive. Here,... Read More about Greater loss of mitochondrial function with ageing is associated with earlier onset of sarcopenia in C. elegans.

The impact of immobilisation and inflammation on the regulation of muscle mass and insulin resistance: different routes to similar end points (2018)
Journal Article

Loss of muscle mass and insulin sensitivity are common phenotypic traits of immobilisation and increased inflammatory burden. The suppression of muscle protein synthesis is the primary driver of muscle mass loss in human immobilisation, and includes... Read More about The impact of immobilisation and inflammation on the regulation of muscle mass and insulin resistance: different routes to similar end points.

Increasing cardiac pyruvate dehydrogenase flux during chronic hypoxia improves acute hypoxic tolerance (2018)
Journal Article

The pattern of metabolic reprogramming in chronic hypoxia shares similarities with that following myocardial infarction or hypertrophy, however the response of the chronically hypoxic heart to subsequent acute injury, and the role of metabolism is no... Read More about Increasing cardiac pyruvate dehydrogenase flux during chronic hypoxia improves acute hypoxic tolerance.

Maximal-intensity exercise does not fully restore muscle pyruvate dehydrogenase complex activation after 3 days of high-fat dietary intake (2018)
Journal Article

© 2019 Elsevier Ltd and European Society for Clinical Nutrition and Metabolism Background & aims: Exercise activates muscle pyruvate dehydrogenase complex (PDC), but moderate intensity exercise fails to fully activate muscle PDC after high-fat diet [... Read More about Maximal-intensity exercise does not fully restore muscle pyruvate dehydrogenase complex activation after 3 days of high-fat dietary intake.

Inflammation-mediated muscle metabolic dysregulation local and remote to the site of major abdominal surgery (2017)
Journal Article

Background & aims: Postoperative hyperglycaemia is common in patients having major surgery and is associated with adverse outcomes. This study aimed to determine whether bacteraemia contributed to postoperative systemic inflammation, and whether incr... Read More about Inflammation-mediated muscle metabolic dysregulation local and remote to the site of major abdominal surgery.

Human skeletal muscle is refractory to the anabolic effects of leucine during the postprandial muscle-full period in older men (2017)
Journal Article

Leucine modulates muscle protein synthesis (MPS), with potential to facilitate accrual/maintenance of muscle mass. Animal models suggest that leucine boluses shortly after meals may prolong MPS and delay onset of a “muscle-full” state. However, the e... Read More about Human skeletal muscle is refractory to the anabolic effects of leucine during the postprandial muscle-full period in older men.

Effects of leucine-enriched essential amino acid and whey protein bolus dosing upon skeletal muscle protein synthesis at rest and after exercise in older women (2017)
Journal Article

© 2017 The Authors Background & aims: Impaired anabolic responses to nutrition and exercise contribute to loss of skeletal muscle mass with ageing (sarcopenia). Here, we tested responses of muscle protein synthesis (MPS), in the under represented gr... Read More about Effects of leucine-enriched essential amino acid and whey protein bolus dosing upon skeletal muscle protein synthesis at rest and after exercise in older women.

Muscle thickness correlates to muscle cross sectional area in the assessment of strength training induced hypertrophy (2017)
Journal Article

Aim: Muscle thickness (MT) measured by ultrasound has been used to estimate cross-sectional area (measured by CT and MRI) at a single time-point. We tested whether MT could be used as a valid marker of MRI determined muscle anatomical cross-sectional... Read More about Muscle thickness correlates to muscle cross sectional area in the assessment of strength training induced hypertrophy.

A novel D2O tracer method to quantify RNA turnover as a biomarker of de novo ribosomal biogenesis, in vitro, in animal models, and in human skeletal muscle (2017)
Journal Article

Current methods to quantify in vivo RNA dynamics are limited. Here, we developed a novel stable isotope (D2O) methodology to quantify RNA synthesis (i.e., ribosomal biogenesis) in cells, animal models, and humans. First, proliferating C2C12 cells wer... Read More about A novel D2O tracer method to quantify RNA turnover as a biomarker of de novo ribosomal biogenesis, in vitro, in animal models, and in human skeletal muscle.

Peroxisome proliferator-activated receptor ? agonism attenuates endotoxaemia-induced muscle protein loss and lactate accumulation in rats (2017)
Journal Article

The peroxisome proliferator-activated receptor γ (PPARγ) agonist rosiglitazone (Rosi) appears to provide protection against organ dysfunction during endotoxaemia. We examined the potential benefits of Rosi on skeletal muscle protein maintenance and c... Read More about Peroxisome proliferator-activated receptor ? agonism attenuates endotoxaemia-induced muscle protein loss and lactate accumulation in rats.

Synchronous deficits in cumulative muscle protein synthesis and ribosomal biogenesis underlie age-related anabolic resistance to exercise in humans (2016)
Journal Article

Ageing is associated with impaired hypertrophic responses to resistance exercise training (RET). Here we investigated the aetiology of ‘anabolic resistance’ in older humans. Twenty healthy male individuals, 10 younger (Y; 23 ± 1 years) and 10 older (... Read More about Synchronous deficits in cumulative muscle protein synthesis and ribosomal biogenesis underlie age-related anabolic resistance to exercise in humans.

Human Skeletal Muscle Disuse Atrophy: Effects on Muscle Protein Synthesis, Breakdown, and Insulin Resistance—A Qualitative Review (2016)
Journal Article

The ever increasing burden of an ageing population and pandemic of metabolic syndrome worldwide demands further understanding of the modifiable risk factors in reducing disability and morbidity associated with these conditions. Disuse skeletal muscle... Read More about Human Skeletal Muscle Disuse Atrophy: Effects on Muscle Protein Synthesis, Breakdown, and Insulin Resistance—A Qualitative Review.

Creatine ingestion augments dietary carbohydrate mediated muscle glycogen supercompensation during the initial 24h of recovery following prolonged exhaustive exercise in humans (2016)
Journal Article

Muscle glycogen availability can limit endurance exercise performance. We previously demonstrated 5 days of creatine (Cr) and carbohydrate (CHO) ingestion augmented post-exercise muscle glycogen storage compared to CHO feeding alone in healthy volunt... Read More about Creatine ingestion augments dietary carbohydrate mediated muscle glycogen supercompensation during the initial 24h of recovery following prolonged exhaustive exercise in humans.

The effect of age and unilateral leg immobilisation for 2 weeks on substrate ulilisation during moderate-intensity exercise in human skeletal muscle (2016)
Journal Article

Age and inactivity have been associated with intramuscular triglyceride (IMTG) accumulation. Here, we attempt to disentangle these factors by studying the effect of 2 weeks of unilateral leg immobilization on substrate utilization across the legs dur... Read More about The effect of age and unilateral leg immobilisation for 2 weeks on substrate ulilisation during moderate-intensity exercise in human skeletal muscle.

Obesity appears to be associated with altered muscle protein synthetic and breakdown responses to increased nutrient delivery in older men, but not reduced muscle mass or contractile function. (2015)
Journal Article

Obesity is increasing, yet despite the necessity to maintain muscle mass and function with age, the effect of obesity on muscle protein turnover in older adults remains unknown. Eleven obese (BMI 31.9 ±1.1) and 15 healthy weight (HW; BMI 23.4 ±0.3) o... Read More about Obesity appears to be associated with altered muscle protein synthetic and breakdown responses to increased nutrient delivery in older men, but not reduced muscle mass or contractile function..

Intake of low-dose leucine-rich essential amino acids stimulates muscle anabolism equivalently to bolus whey protein in older women at rest and after exercise (2015)
Journal Article

© 2015 American Physiological Society. All Rights Reseved. Dysregulated anabolic responses to nutrition/exercise may contribute to sarcopenia; however, these characteristics are poorly defined in female populations. We determined the effects of two f... Read More about Intake of low-dose leucine-rich essential amino acids stimulates muscle anabolism equivalently to bolus whey protein in older women at rest and after exercise.

The integrin-adhesome is required to maintain muscle structure, mitochondrial ATP production, and movement forces in Caenorhabditis elegans (2014)
Journal Article

The integrin-adhesome network, which contains >150 proteins, is mechano-transducing and located at discreet positions along the cell-cell and cell-extracellular matrix interface. A small subset of the integrin-adhesome is known to maintain normal mus... Read More about The integrin-adhesome is required to maintain muscle structure, mitochondrial ATP production, and movement forces in Caenorhabditis elegans.

Transient transcriptional events in human skeletal muscle at the outset of concentric resistance exercise training (2014)
Journal Article

We sought to ascertain the time course of transcriptional events that occur in human skeletal muscle at the outset of resistance exercise (RE) training in RE naive individuals and determine whether the magnitude of response was associated with exerci... Read More about Transient transcriptional events in human skeletal muscle at the outset of concentric resistance exercise training.