Ian Rollo

ORCID: 0000-0002-2215-089X
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About
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Research Areas
  • Muscle metabolism and nutrition
  • Sports Performance and Training
  • Exercise and Physiological Responses
  • Diet and metabolism studies
  • Sports injuries and prevention
  • Cardiovascular and exercise physiology
  • Thermoregulation and physiological responses
  • Adipose Tissue and Metabolism
  • Physical Activity and Health
  • Sport Psychology and Performance
  • High Altitude and Hypoxia
  • Nutrition and Health in Aging
  • Obesity, Physical Activity, Diet
  • Biodiesel Production and Applications
  • Fatty Acid Research and Health
  • Vehicle emissions and performance
  • Cardiovascular Effects of Exercise
  • Biochemical effects in animals
  • Biochemical Analysis and Sensing Techniques
  • Motivation and Self-Concept in Sports
  • Health and Lifestyle Studies

Loughborough University
2011-2025

PepsiCo (United Kingdom)
2016-2025

Gatorade Sports Science Institute
2016-2019

TiFN
2017

Maastricht University Medical Centre
2016

Food & Nutrition
2016

Creative Commons
2016

University of Leicester
2015

University of Copenhagen
2012

Williams (United Kingdom)
2010

Football is a global game which constantly evolving, showing substantial increases in physical and technical demands. Nutrition plays valuable integrated role optimising performance of elite players during training match-play, maintaining their overall health throughout the season. An evidence-based approach to nutrition emphasising, 'food first' philosophy (ie, food over supplements), fundamental ensure effective player support. This requires relevant scientific evidence be applied...

10.1136/bjsports-2019-101961 article EN British Journal of Sports Medicine 2020-10-23

Protein ingestion increases skeletal muscle protein synthesis rates during recovery from endurance exercise. We aimed to determine the effect of graded doses dietary co-ingested with carbohydrate on whole-body metabolism, and myofibrillar (MyoPS) mitochondrial (MitoPS) In a randomized, double-blind, parallel-group design, 48 healthy, young, endurance-trained men (mean ± SEM age: 27 1 y) received primed continuous infusion l-[ring-2H5]-phenylalanine, l-[ring-3,5-2H2]-tyrosine,...

10.1093/ajcn/nqaa073 article EN cc-by-nc American Journal of Clinical Nutrition 2020-03-27

The purpose of this study was to examine the influences a carbohydrate (CHO) mouth rinse on self-selected running speeds during 30-min treadmill run. Ten endurance-trained men performed 2 trials, each involving 10-min warm-up at 60% VO2max followed by run an automated that allowed spontaneous selection without manual input. Participants were asked equated rating perceived exertion 15, rinsing with either 6% CHO or taste-matched placebo (PLA) solution. In addition recording and total distance...

10.1123/ijsnem.18.6.585 article EN International Journal of Sport Nutrition and Exercise Metabolism 2008-12-01

The aim of this study was to investigate the influence mouth rinsing a CHO-electrolyte (CHO-E) solution on 1-h running performance. A second determined whether CHO-E altered blood glucose and plasma insulin concentrations at rest.After 13-h fast, 10 endurance-trained male runners completed two performance runs an automated treadmill while 25 mL either 6.4% (C) or placebo (P) immediately before 15-min intervals during run. An additional healthy active males followed same procedure resting...

10.1249/mss.0b013e3181bac6e4 article EN Medicine & Science in Sports & Exercise 2010-03-13

The aim of this study was to describe maximal fat oxidation (MFO) rates in an athletic population.In total, 1121 athletes (933 males and 188 females), from a variety sports competitive level, undertook graded exercise test on treadmill fasted state (≥5 h fasted). Rates were determined using indirect calorimetry.The average MFO 0.59 ± 0.18 g·min, ranging 0.17 1.27 g·min. Maximal occurred at intensity 49.3% 14.8% V˙O2max, 22.6% 88.8% V˙O2max. In absolute terms, male had significantly higher...

10.1249/mss.0000000000001084 article EN Medicine & Science in Sports & Exercise 2016-08-31

The purpose of this study was to determine the impact ingesting 30 g casein protein with and without 2 free leucine before sleep on myofibrillar synthesis rates during postexercise overnight recovery. Thirty-six healthy young men performed a single bout resistance-type exercise in evening (1945) after full day dietary standardization. Thirty minutes (2330), subjects ingested intrinsically l-[1-13C]phenylalanine-labeled (PRO+leu, n = 12) or (PRO, leucine, noncaloric placebo (PLA, 12)....

10.1152/ajpendo.00273.2016 article EN AJP Endocrinology and Metabolism 2017-05-24

Introduction We have previously shown that protein ingestion before sleep increases overnight muscle synthesis rates. Whether prior exercise further augments the synthetic response to presleep remains be established. Objective This study aimed assess whether resistance-type performed in evening ingestion. Methods Twenty-four healthy young men were randomly assigned ingest 30 g intrinsically L-[1-13C]-phenylalanine and L-[1-13C]-leucine-labeled casein going with (PRO + EX, n = 12) or without...

10.1249/mss.0000000000001045 article EN Medicine & Science in Sports & Exercise 2016-09-17

Abstract This study aimed to assess energy availability (EA), alongside possible risk factors of reduced or low EA professional female soccer players during a competitive season. Thirteen (age: 23.7 ± 3.4 y, stature: 1.69 0.08 m, body mass: 63.7 7.0 kg) engaged in 5‐day (two rest days, one light training, heavy training and match day) monitoring period. Energy intake (EI) expenditure exercise (EEE) were measured. was calculated categorised as optimal, (>45, 30‐45, <30 kcal·kg FFM −1...

10.1080/17461391.2020.1788647 article EN European Journal of Sport Science 2020-07-07

The aims of the study were 1) to evaluate whether a multifaceted simulated soccer game protocol, entitled Copenhagen Soccer Test (CST), elicited similar physiological loading as competitive (CG) and 2) determine muscle metabolites, blood variables, sprint performance in various phases CST.Twelve Danish Second- Third-Division players participated study. On separate days, HR measurements, frequent sampling, physical/technical tests performed during 60- 90-min versions CST which repeated...

10.1249/mss.0b013e31824cc23b article EN Medicine & Science in Sports & Exercise 2012-02-11

The physical-performance profiles of subelite male footballers were monitored during 6 wk a competitive season. same squad players played either 1 (1G, n = 15) or 2 (2G, matches per week. On weeks 0, 3, and 6, 48 h postmatch, completed countermovement jump (CMJ), 10- 20-m sprints, the Yo-Yo Intermittent Recovery Test (YYIRT), Recovery-Stress Questionnaire. Both groups undertook weekly training sessions. 2G showed after lower YYIRT (–11% to 3%, 90% CI –15.8% –6.8%; P < .001) CMJ...

10.1123/ijspp.2013-0288 article EN International Journal of Sports Physiology and Performance 2014-04-21

To investigate the influence of ingesting versus mouth rinsing a carbohydrate-electrolyte solution on 1-h running performance.After 14- to 15-h fast, 10 endurance-trained male runners (mean ± SD: VO2peak = 65.0 4.4 mL·kg(-1)·min(-1)) completed three performance runs separated by 1 wk. In random order, ingested either 8-mL·kg(-1) body mass 6.4% (CHO) or placebo (P) 30 min before 2-mL·kg(-1) at 15-min intervals throughout run. On separate occasion, rinsed (R) CHO, i.e., without ingestion, same...

10.1249/mss.0b013e3181f1cda3 article EN Medicine & Science in Sports & Exercise 2010-08-05

This study investigated the influence of mouth rinsing a carbohydrate solution on self-selected intermittent variable-speed running performance. Eleven male amateur soccer players completed modified version Loughborough Intermittent Shuttle Test (LIST) 2 occasions separated by 1 wk. The LIST allowed self-selection speeds during Block 6 protocol (75–90 min). Players rinsed and expectorated 25 ml noncaloric placebo (PLA) or 10% maltodextrin (CHO) for 10 s, routinely LIST. Self-selected walk...

10.1123/ijsnem.2015-0001 article EN International Journal of Sport Nutrition and Exercise Metabolism 2015-06-09

Protein ingestion during recovery from resistance-type exercise increases postexercise muscle protein synthesis rates. Whey has been reported to have greater anabolic properties than soy protein, an effect which may be attributed the higher leucine content of whey.The objective this study was compare postprandial myofibrillar (MyoPS) and mitochondrial (MitoPS) rates after carbohydrate with whey, soy, or enriched free (to match whey) a single bout concurrent resistance- endurance-type in...

10.1093/jn/nxy251 article EN cc-by Journal of Nutrition 2018-09-05

The aim of the current study was to investigate influence mouth rinsing carbohydrate at increasing concentrations on ~1 hr cycle time trial performance. Eleven male cyclists completed three experimental trials, following an overnight fast. Cyclists performed a ergometer, while their for 5 s with either 7% maltodextrin solution (CHO), 14% CHO or taste-matched placebo (PLA) after every 12.5% set amount work. Heart rate recorded trial, RPE and GI comfort were determined 25% trial. rinse...

10.1123/ijsnem.2016-0111 article EN International Journal of Sport Nutrition and Exercise Metabolism 2016-09-06

Abstract Musculoskeletal injuries are prevalent in professional soccer and can result lost training time or match play. It is intuitive that the “return to play” (RTP) pathway will depend, large part, on expertise of sports medicine practitioners (e.g. surgeons, physicians, physiotherapists) responsible for player's recovery. Consensus statements returning athletes sport following injury acknowledge contributions psychology nutrition. However, specific consideration how integrate these two...

10.1080/17461391.2020.1792558 article EN European Journal of Sport Science 2020-07-07

Hypohydration increases physiological strain and reduces physical technical soccer performance, but there are limited data on how fluid balance responses change between different types of sessions in professional players. This study investigated sweat fluid/carbohydrate intake elite male players training at low high intensities cool hot environments. Fluid/sodium (Na+) losses ad-libitum carbohydrate/fluid fourteen were measured four occasions: (wet bulb globe temperature (WBGT): 15 ± 7 °C,...

10.3390/nu13020401 article EN Nutrients 2021-01-27

Whey and micellar casein are high-quality dairy proteins that can stimulate postprandial muscle protein synthesis rates. How whey compare with milk in their capacity to myofibrillar (MyoPS) mitochondrial (MitoPS) rates during postexercise recovery is currently unknown. The objective of this study was MyoPS MitoPS after protein-carbohydrate co-ingestion protein, whey, or from a single bout concurrent resistance- endurance-type exercise young healthy men. In randomized, double-blind,...

10.1093/jn/nxy244 article EN cc-by Journal of Nutrition 2018-09-05

Abstract The purpose of this current opinion paper is to describe the journey ingested carbohydrate from ‘mouth mitochondria’ culminating in energy production skeletal muscles during exercise. This conveniently described as primary, secondary, and tertiary events. primary stage detection by receptors oral cavity on tongue that activate reward other centers brain leading insulin secretion. After digestion, secondary transport monosaccharides small intestine into systemic circulation. passage...

10.1007/s40279-020-01343-3 article EN cc-by Sports Medicine 2020-09-16
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