Peter Krustrup

Peter Krustrup
University of Southern Denmark | SDU · Institute of Sports Science and Clinical Biomechanics

Professor, PhD
@PeterKrustrup Contributing to a special issue on Women's Elite Football in Scand J Med Sci Sports

About

443
Publications
432,850
Reads
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28,260
Citations
Introduction
Peter Krustrup has authored 375 research articles, with >25000 citations and an H-index of 79. His main research areas are Muscle Physiology, Human Performance and Health Effects of Sports. Currently, Peter is continuing his pioneering work on the fitness and health effects of football and other team sports. He has authored "Football as Medicine", is head of Sport and Health Sciences at SDU and is DIAS chair (Danish Institute of Advanced Studies), and Fitness Coach for DEN women's national team.
Additional affiliations
July 2011 - October 2013
University of Exeter
Position
  • Professor (Full)
June 2005 - July 2010
University of Copenhagen
Position
  • Professor (Associate)
Education
January 2000 - August 2004
University of Copenhagen
Field of study
  • Exercise Physiology: Muscle energy turnover and mechanical efficiency during dynamic exercise

Publications

Publications (443)
Article
To examine the activity profile and physical loading of elite female soccer players during match play and to study the relationship between training status and physical match performance. Time-motion analysis and HR recordings were performed on 14 elite female soccer players during competitive matches. In addition, the players carried out a laborat...
Article
To examine the physiological response and reproducibility of the Yo-Yo intermittent recovery test and its application to elite soccer. Heart rate was measured, and metabolites were determined in blood and muscle biopsies obtained before, during, and after the Yo-Yo test in 17 males. Physiological measurements were also performed during a Yo-Yo rete...
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Androgen deprivation therapy (ADT) remains a cornerstone in the management of patients with prostate cancer (PCa) despite adverse effects on body composition and functional parameters. We compared the effects of football training with standard care in PCa patients managed with ADT (> 6 months). Fifty-seven men aged 67 (range: 43-74) were randomly a...
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The novel coronavirus disease 2019 (COVID-19) seems to be having a major impact on physical activity behaviours globally. The pandemic has forced many people around the world to stay at home and self-isolate for a period of time. WHO recommends 60 min/day of moderate-to-vigorous physical activity for 6–17-yr-olds, and 75 min/wk of vigorous or 150 m...
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Maximal oxygen uptake (VO2max) is associated with cardiovascular and metabolic health in the general population. The heart rate (HR) ratio method (HRratio) is a valid, easy and accessible method for estimating VO2max in well-trained subjects. This study examined the validity of using the HRratio to estimate VO2max in recreational football players i...
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Purpose Studies have indicated upper body involvement during football, provoking long-term muscular adaptations. This study aimed at examining the acute metabolic response in upper and lower body skeletal muscle to football training organized as small-sided games (SSG). Methods Ten healthy male recreational football players [age 24 ± 1 (± SD) yrs;...
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Aims This study aimed to evaluate the impact of a 12-week calorie-restricted diet and recreational sports training on gene expressions IL15, ATROGIN1 and MURF-1 in skeletal muscle of T2D patients. Methods Older adults with T2D (n = 39, 60 ± 6.0 years, BMI 33.5 ± 0.6 kg/m²) were randomly allocated to Diet+Soccer (DS), Diet+Running (DR) or Diet (D)....
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Background: Although regular exercise is recommended for preventing and treating overweight/obesity, the most effective exercise type for improving cardiometabolic health in individuals with overweight/obesity remains largely undecided. This network meta-analysis aimed to evaluate and rank the comparative efficacy of 5 exercise modalities on cardio...
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Abstract: Elite football can make players' feel nervous, and personality characteristics, as well as experience, affect how well pressure is handled before important games. Studying the psychological characteristics of female football players can provide information on how well psychological pressure is handled and provide knowledge on how to suppo...
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The present study investigated the position-specific match demands and heart rate response of female elite footballers, with special focus on the full-game, end-game, and peak-intensity periods. In total, 217 match observations were performed in 94 players from all eight teams of the best Danish Women's League, that is, goalkeepers (GK, n = 10), ce...
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The present study examined skeletal muscle metabolism and changes in repeated sprint performance during match play for n = 20 competitive elite women outfield players. We obtained musculus vastus lateralis biopsies and blood samples before, after, and following intense periods in each half of a friendly match, along with 5 × 30‐meter sprint tests a...
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Objectives: Research directed at soccer has seen dramatic growth in the last decade. While published research on soccer has shown exponential growth, the proportion of articles addressing females is lagging behind research addressing males. The purpose of this paper is to explore how the literature on soccer, female soccer, and professional female...
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We combined game activity analyses with skeletal muscle phenotypes and comprehensive physiological testing to elucidate factors of importance for physical performance in elite women's football. GPS‐data from an experimental game, sprint and endurance testing, and muscle tissue analysis of metabolic enzyme activity, protein expression and fiber type...
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The purpose of the present study was to investigate the physical performance of elite female football players during match play along with transient alterations in running performance following 1‐ and 5‐min univariate peak periods. 54 elite female players from four top‐level Norwegian teams were monitored for one season (n = 393 match observations)...
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Based on extrapolation of current trends in modern soccer, physiological loading has increased markedly, and the game will continue to become even more demanding in the future, which will exacerbate fatigue at the end of a game and between games. Soccer is a glycogen consuming activity due to its high-intensity intermittent nature, and muscle glyco...
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We determined player-to-player distance, body-to-ball contact, and exercise intensity during three training modalities in various football populations. 213 participants were recruited, ranging from 9-year-old boys to young men and 11-year-old girls to middle-aged women. All groups were analysed with video-filming and GPS-based Polar Pro monitors du...
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This narrative review paper aimed to discuss the literature on machine learning applications in soccer with an emphasis on injury risk assessment. A secondary aim was to provide practical tips for the health and performance staff in soccer clubs on how machine learning can provide a competitive advantage. Performance analysis is the area with the m...
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Background: This 40-weeks intervention study evaluates the effects on self-reported health status, emotional wellbeing, general self-efficacy and sleep problems among female hospital employees. Methods: 107 employees were cluster-randomized into three groups; football (FG), Zumba (ZG) and control (CG). Outcome measurements were conducted at baselin...
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Objectives This study investigated the effects of the health promotion intervention “11 for Health in Denmark” programme on 10-12-year-old ethnic minority schoolchildren’s enjoyment, health knowledge, well-being and fitness. Methods 1122 Danish 5th grade schoolchildren with ethnic minority background from 154 schools were randomised (5:1) to an in...
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The “11 for Health in Denmark” concept aims to enhance 10–12‐year‐old schoolchildren’s physical activity levels and health knowledge through an 11‐week football intervention and has been shown to induce positive effects in numerous areas. However, little is known about the implementation facilitation of this concept in schools. This case study ther...
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Purpose: The purpose of this study was to (i) assess hydration levels in elite male football players during a national team training camp before and during qualifying matches, (ii) evaluate the effect of coaching strategies for hydration based on feedback from hydration monitoring, and (iii) assess possible relationships between hydration status a...
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Objective People with schizophrenia and bipolar disorder are at increased risk of having comorbid somatic illness. This is partly due to lack of physical activity, which may originate from childhood. Sleep disturbances are associated with schizophrenia and bipolar disorder. We aimed to assess physical activity and sleep in children at familial high...
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Objectives This study investigated the correlation between sports club activities and well-being and physical health parameters in 10–12 years old boys. Design Cross sectional. Setting Danish schools. Participants 2293 boys took part in the study. Primary and secondary outcome measures Questionnaires on participation in sports clubs and well-be...
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The trans-contextual model (TCM) offers a heuristic-based theoretical framework to understand fifth-grade Danish schoolchildren’s motivation to participate in the 11 for Health in Denmark educational football concept, as well as their intention and behaviour to participate in vigorous physical activity (PA) in a leisure-time context. The implementa...
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PurposeLow bone mineral density (BMD) and fractures are a major concern in the female population and preventative strategies are needed. Whether team sports participation may reduce age-related bone loss in elderly women is still uncertain.Methods One hundred and thirty healthy, non-smoking women participated in this cross-sectional study, i.e., el...
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Purpose Regular exercise affects the expression of several genes, proteins and microRNAs (miRNAs) in time- and intensity-dependent manner promoting longevity. We previously identified from GeneChip Array analysis several differentially expressed genes and miRNAs in muscle from veteran football players (VPG) compared to active untrained elderly subj...
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Background: In Denmark, the first COVID-19 pandemic lockdown resulted in a compact season finisher for elite footballers, potentially impacting their mental health. � Purpose: This study aimed to investigate the protective role of resilience and the impeding role of trait anxiety on elite footballers' level and variability of well-being and emotion...
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Purpose To examine efficacy of 12 months Football Fitness offered twice per week on bone mineral density (BMD), bone turnover markers (BTM), postural balance, muscle strength and body composition in women treated for early‐stage breast cancer (BC). Methods Women treated for early‐stage BC were randomised to Football Fitness (FFG, n=46) or control...
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The present study is aimed at determining the effects of intensity-modified recreational volleyball training on health markers and physical fitness in healthy middle-aged men. Thirty-four healthy untrained men aged 25–55 years were randomized to either a modified recreational volleyball group (MRV, n=17) or a recreational volleyball group (RV, n=17...
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Several hallmarks of aging have been identified and examined separately in previous exercise studies. For the first time, this study investigates the effect of lifelong regular exercise in humans on two of the central aging hallmarks combined. This cross-sectional study involved 129 healthy, non-smoking women, including young elite football players...
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The purpose of this study was to quantify the exercise intensity and technical involvement of U9 boys' and girls' team handball during different game formats, and the differences between genders. Locomotor activity (total distance, distance in speed zones, accelerations, and decelerations), heart rate (HR), and technical involvement (shots, goals,...
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The aim of this study was at examining the validity and reliability of a marketed bioimpedance (BIA) scale for body composition assessment, in children engaged in an educational football project (FIFA 11 for Health). One-hundred and twenty-seven children (70 boys and 57 girls; age 10.7±0.5 years, body mass 41.2±9.0 kg, Body mass index 18.5±3.3 kg·m...
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The main purpose of this cluster randomised controlled trial was to investigate the effects of a physical education (PE) intervention programme combining theoretical and practical components on students' knowledge, skills, abilities and motivation related to competence for a healthy active lifestyle. The intervention used learning tasks to combine...
Preprint
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Aims: Several hallmarks of aging have been identified and examined separately in previous exercise studies. For the first time, this study investigates the effect of lifelong regular exercise in humans on two of the central aging hallmarks combined. Methods: This cross-sectional study involved 129 healthy, non-smoking women, including young elite f...
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Purpose: This study aimed to compare performance on sand and a firm surface and to describe the physical capacity of male and female beach soccer players. Methods: Sixty-six male and 29 female competitive beach soccer players voluntarily participated in this study. Firstly, within-subjects test scores were compared to scores on a firm surface (crit...
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Objectives Our large-scale cluster randomised controlled trial aimed to investigate the effects on health knowledge and enjoyment of an 11 week ‘health education through football’ programme for children aged 10–12 years old. Methods 3127 Danish school children (49% girls) aged 10–12 years from a total of 154 schools located in 63% of the Danish mun...
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This study reports the effects of a recreational team handball exercise programme (randomised controlled trial, RCT) on bone health, postural balance and body composition in untrained postmenopausal women without previous experience of the sport. Sixty-seven postmenopausal women without previous experience of team handball practice (68.3±6.2 years,...
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During the COVID-19 pandemic, physical inactivity has increased, and a wide range of sporting activities locked down, with possible long-term implications for public health. Football is the most popular sport worldwide, and recreational football training leads to broad-spectrum health effects. Football is, however, deemed a contact sport with frequ...
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Background: Breast cancer survivors are encouraged to be physically active. A recent review suggests that football training is an effective exercise modality for women across the lifespan, positively influencing health variables such as strength, fitness and social well-being. However, football is a contact sport, potentially posing an increased r...
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We evaluated the cardiometabolic effects of a 15-week combined exercise programme, implemented in sports clubs, for 50–70-year-olds with low aerobic fitness. In a randomized controlled trial, 45 participants (26 women) with low fitness were randomly assigned (2:1-ratio) to a training group (TG, n = 30) or inactive control group (CG, n = 15). TG had...
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Purpose: Physical activity (PA) represents the first line of defence against diseases characterised by increased inflammation status, such as metabolic and infectious diseases. Conversely, a sedentary lifestyle-associated with obesity, type 2 diabetes and cardiovascular disorders-negatively impacts on general health status, including susceptibilit...
Article
Background Postmenopausal women have an elevated risk of developing cardiovascular diseases, which can be counteracted by conventional exercise regimes or recreational football. Less is known about the impact of exercise programmes based on other team sports. Thus, we examined the effects of recreational team handball on aerobic performance, cardio...
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Prolonged physical inactivity in young adults may lead to deficiencies in musculoskeletal fitness, and thus a need exists to develop physical activity and exercise programmes that are effective of increasing musculoskeletal fitness. The aim of this study, therefore, was to investigate the effects of small-sided team handball training on lower limb...
Article
Recreational team sports offer an alternative form of exercise to inactive individuals across the lifespan and sexes. Soccer is the most investigated recreational team sport reporting a wide range of health benefits, including cardiovascular (CV) health. The quest for novel paradigms to promote exercise in the general population, recently extended...
Article
Vigh-Larsen, JF, Haverinen, MT, Panduro, J, Ermidis, G, Andersen, TB, Overgaard, K, Krustrup, P, Parkkari, J, Avela, J, Kyröläinen, H, and Mohr, M. On-ice and office fitness profiles of elite and U20 male ice hockey players of two different national standards. J Strength Cond Res XX(X): 000-000, 2020-Differences in body composition and performance...
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Madsen, M, Larsen, MN, Cyril, R, Møller, TK, Madsen, EE, Ørntoft, C, Lind, RR, Ryom, K, Christiansen, SR, Wikman, J, Elbe, AM, and Krustrup, P. Well-being, physical fitness, and health profile of 2,203 Danish girls aged 10-12 in relation to leisure-time sports club activity-with special emphasis on the five most popular sports. J Strength Cond Res...
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Background The present study investigates the wellbeing effects for 10–12‐year‐old children of the school‐based intervention “11 for Health in Denmark”, which comprises physical activity (PA) and health education. Subgroup analyses were carried out for boys and girls. Method 3061 children were randomly assigned to an intervention group (IG) or a c...
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The study aims were to describe positional differences in the acceleration and sprint profiles of professional football players in match-play, and analyse start speeds required based on the intensity of accelerations and decelerations. This longitudinal study was conducted over thirteen competitive microcycles in a professional football team from L...
Article
Purpose To examine the exercise intensity and impact of 12 months of twice-weekly recreational football training on cardiorespiratory fitness (CRF), blood pressure (BP), resting heart rate (HRrest), body fat mass, blood lipids, inflammation, and health-related quality of life in women treated for early-stage breast cancer (BC). Methods Sixty-eight...
Article
Background: Platelets (plts) are involved in thrombosis. However, intense exercise can affect the number and activation of plts. Objectives: The purpose of this study was to compare the effects of acute high-intensity interval exercise performed in the morning and the evening on plt indices and exercise-induced thrombocytosis. Methods: Eleven healt...
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The aim of this editorial is to discuss the football evolution and prepare the players, the coaches, sports medicine and sports science staff for the future game demands. The game tactical evolution is expected to elevate the players' physical demands. This together with the congested schedule will impose additional physical and mental load to the...
Article
The present study examined cardiovascular adaptations in 8–10-year-old schoolchildren after a full school year (10 months) of 5 × 12 min/wk. of intense physical training, including small-sided ball games (soccer, basketball and floorball) or interval running. The study involved 8–10-year-old healthy Danish schoolchildren (n = 232), who were cluster...