All Outputs (40)

Perioperative nutrition: Recommendations from the ESPEN expert group (2020)
Journal Article
Lobo, D. N., Gianotti, L., Adiamah, A., Barazzoni, R., Deutz, N., Dhatariya, K., …Weimann, A. (2020). Perioperative nutrition: Recommendations from the ESPEN expert group. Clinical Nutrition, 39(11), 3211-3227. https://doi.org/10.1016/j.clnu.2020.03.038

© 2020 Elsevier Ltd and European Society for Clinical Nutrition and Metabolism Background & aims: Malnutrition has been recognized as a major risk factor for adverse postoperative outcomes. The ESPEN Symposium on perioperative nutrition was held in N... Read More about Perioperative nutrition: Recommendations from the ESPEN expert group.

Testosterone therapy induces molecular programming augmenting physiological adaptations to resistance exercise in older men (2019)
Journal Article
Gharahdaghi, N., Rudrappa, S., Brook, M. S., Idris, I., Crossland, H., Hamrock, C., …Atherton, P. J. (2019). Testosterone therapy induces molecular programming augmenting physiological adaptations to resistance exercise in older men. Journal of Cachexia, Sarcopenia and Muscle, 10(6), 1276-1294. https://doi.org/10.1002/jcsm.12472

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
Latimer, L., Constantin, D., Greening, N., Calvert, L., Menon, M., & Greenhaff, P. (2019). Impact of transcutaneous neuromuscular electrical stimulation or resistance exercise on skeletal muscle mRNA expression in COPD. International Journal of Chronic Obstructive Pulmonary Disease, 14, 1355-1364. https://doi.org/10.2147/COPD.S189896

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
Gaffney, C. J., Pollard, A., Barratt, T. F., Constantin-Teodosiu, D., Greenhaff, P. L., & Szewczyk, N. J. (2018). Greater loss of mitochondrial function with ageing is associated with earlier onset of sarcopenia in C. elegans. Aging, 10(11), 3382-3396. https://doi.org/10.18632/aging.101654

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
Crossland, H., Skirrow, S., Puthucheary, Z. A., Constantin-Teodosiu, D., & Greenhaff, P. L. (2018). The impact of immobilisation and inflammation on the regulation of muscle mass and insulin resistance: different routes to similar end points. Journal of Physiology, 597(5), 1259-1270. https://doi.org/10.1113/jp275444

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
Handzlik, M., Constantin-Teodosiu, D., Greenhaff, P. L., & Cole, M. (2018). Increasing cardiac pyruvate dehydrogenase flux during chronic hypoxia improves acute hypoxic tolerance. Journal of Physiology, 596(15), 3357-3369. https://doi.org/10.1113/JP275357

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
Constantin-Teodosiu, D., Cederblad, G., Bergstrom, M., & Greenhaff, P. L. (2019). Maximal-intensity exercise does not fully restore muscle pyruvate dehydrogenase complex activation after 3 days of high-fat dietary intake. Clinical Nutrition, 38(2), 948-953. https://doi.org/10.1016/j.clnu.2018.02.001

© 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
Varadhan, K. K., Constantin-Teodosiu, D., Constantin, D., Greenhaff, P. L., & Lobo, D. N. (2017). Inflammation-mediated muscle metabolic dysregulation local and remote to the site of major abdominal surgery. Clinical Nutrition, 37(6, Part A), 2178-2185. https://doi.org/10.1016/j.clnu.2017.10.020

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
Mitchell, W. K., Phillips, B. E., Hill, I., Greenhaff, P. L., Lund, J. N., Williams, J. P., …Atherton, P. J. (2017). Human skeletal muscle is refractory to the anabolic effects of leucine during the postprandial muscle-full period in older men. Clinical Science, 131(21), https://doi.org/10.1042/CS20171230

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.

Muscle thickness correlates to muscle cross sectional area in the assessment of strength training induced hypertrophy (2017)
Journal Article
Franchi, M. V., Longo, S., Mallinson, J. E., Quinlan, J. I., Taylor, T., Greenhaff, P. L., & Narici, M. V. (in press). Muscle thickness correlates to muscle cross sectional area in the assessment of strength training induced hypertrophy. Scandinavian Journal of Medicine and Science in Sports, 28(3), https://doi.org/10.1111/sms.12961

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.

Physiological adaptations to resistance exercise as a function of age (2017)
Journal Article
Phillips, B. E., Williams, J. P., Greenhaff, P. L., Smith, K., & Atherton, P. J. (2017). Physiological adaptations to resistance exercise as a function of age. JCI insight, 2(17), Article e95581. https://doi.org/10.1172/jci.insight.95581

BACKGROUND. The impact of resistance exercise training (RE-T) across the life span is poorly defined. METHODS. To resolve this, we recruited three distinct age cohorts of young (18–28 years; n = 11), middle-aged (45–55 years; n = 20), and... Read More about Physiological adaptations to resistance exercise as a function of age.

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
Brook, M. S., Wilkinson, D., Mitchell, W. K., Lund, J. N., Phillips, B. E., Szewczyk, N. J., …Atherton, P. J. (2017). 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. AJP - Endocrinology and Metabolism, 313(6), Article E681-E689. https://doi.org/10.1152/ajpendo.00157.2017

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.

Muscle carnitine availability plays a central role in regulating fuel metabolism in the rodent (2017)
Journal Article
Porter, C., Constantin-Teodosiu, D., Constantin, D., Leighton, B., Poucher, S. M., & Greenhaff, P. L. (2017). Muscle carnitine availability plays a central role in regulating fuel metabolism in the rodent. Journal of Physiology, 595(17), 5765-5780. https://doi.org/10.1113/JP274415

The body carnitine pool is primarily confined to skeletal muscle, where it regulates carbohydrate (CHO) and fat usage. Mildronate (3-(2,2,2-trimethylhydrazinium)-propionate) inhibits carnitine synthesis and tissue uptake, but the impact of carnitine... Read More about Muscle carnitine availability plays a central role in regulating fuel metabolism in the rodent.

Peroxisome proliferator-activated receptor ? agonism attenuates endotoxaemia-induced muscle protein loss and lactate accumulation in rats (2017)
Journal Article
Crossland, H., Constantin-Teodosiu, D., Gardiner, S. M., & Greenhaff, P. (2017). Peroxisome proliferator-activated receptor ? agonism attenuates endotoxaemia-induced muscle protein loss and lactate accumulation in rats. Clinical Science, 131(13), 1437-1447. https://doi.org/10.1042/CS20170958

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.

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
Vigelsø, A., Gram, M., Dybboe, R., Kuhlman, A., Prats, C., Greenhaff, P. L., …Helge, J. (2016). The effect of age and unilateral leg immobilisation for 2 weeks on substrate ulilisation during moderate-intensity exercise in human skeletal muscle. Journal of Physiology, 594(8), 2339-2358. https://doi.org/10.1113/JP271712

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.

Relative Contribution of Intramyocellular Lipid to Whole-Body Fat Oxidation Is Reduced With Age but Subsarcolemmal Lipid Accumulation and Insulin Resistance Are Only Associated With Overweight Individuals (2016)
Journal Article
Chee, C., Shannon, C. E., Burns, A., Selby, A. L., Wilkinson, D., Smith, K., …Stephens, F. B. (2016). Relative Contribution of Intramyocellular Lipid to Whole-Body Fat Oxidation Is Reduced With Age but Subsarcolemmal Lipid Accumulation and Insulin Resistance Are Only Associated With Overweight Individuals. Diabetes, 65(4), 840-850. https://doi.org/10.2337/db15-1383

© 2016 by the American Diabetes Association. Insulin resistance is closely related to intramyocellular lipid (IMCL) accumulation, and both are associated with increasing age. It remains to be determined to what extent perturbations in IMCL metabolism... Read More about Relative Contribution of Intramyocellular Lipid to Whole-Body Fat Oxidation Is Reduced With Age but Subsarcolemmal Lipid Accumulation and Insulin Resistance Are Only Associated With Overweight Individuals.

Protein ingestion acutely inhibits insulin-stimulated muscle carnitine uptake in healthy young men (2015)
Journal Article
Shannon, C. E., Nixon, A. V., Greenhaff, P. L., & Stephens, F. B. (2016). Protein ingestion acutely inhibits insulin-stimulated muscle carnitine uptake in healthy young men. American Journal of Clinical Nutrition, 103(1), https://doi.org/10.3945/ajcn.115.119826

BACKGROUND: Increasing skeletal muscle carnitine content represents an appealing intervention in conditions of perturbed lipid metabolism such as obesity and type 2 diabetes but requires chronic L-carnitine feeding on a daily basis in a high-carbohy... Read More about Protein ingestion acutely inhibits insulin-stimulated muscle carnitine uptake in healthy young men.

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
Murton, A. J., Marimuthu, K., Mallinson, J. E., Selby, A. L., Smith, K., Rennie, M. J., & Greenhaff, P. L. (2015). 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. Diabetes, 64(9), https://doi.org/10.2337/db15-0021

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
Bukhari, S. S., Phillips, B. E., Wilkinson, D. J., Limb, M. C., Rankin, D., Mitchell, W. K., …Atherton, P. J. (2015). 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. AJP - Endocrinology and Metabolism, 308(12), E1056-E1065. https://doi.org/10.1152/ajpendo.00481.2014

© 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.

Statin myalgia is not associated with reduced muscle strength, mass or protein turnover in older male volunteers, but is allied with a slowing of time to peak power output, insulin resistance and differential muscle mRNA expression: Statin myalgia, muscle function and metabolism (2015)
Journal Article
Selby, A., Murton, A., Mallinson, J. E., Marimuthu, K., Murton, A. J., Selby, A. L., …Greenhaff, P. L. (2015). Statin myalgia is not associated with reduced muscle strength, mass or protein turnover in older male volunteers, but is allied with a slowing of time to peak power output, insulin resistance and differential muscle mRNA expression: Statin myalgia, muscle function and metabolism. Journal of Physiology, 593(5), 1239-1257. https://doi.org/10.1113/jphysiol.2014.285577

Statins are associated with muscle myalgia and myopathy, which probably reduce habitual physical activity. This is particularly relevant to older people who are less active, sarcopaenic and at increased risk of statin myalgia. We hypothesised that st... Read More about Statin myalgia is not associated with reduced muscle strength, mass or protein turnover in older male volunteers, but is allied with a slowing of time to peak power output, insulin resistance and differential muscle mRNA expression: Statin myalgia, muscle function and metabolism.