Maarit Valtonen

ORCID: 0000-0001-8883-2255
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About
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Research Areas
  • Sports injuries and prevention
  • Exercise and Physiological Responses
  • Cardiovascular Effects of Exercise
  • Physical Activity and Health
  • Sports Performance and Training
  • Obesity, Physical Activity, Diet
  • Respiratory viral infections research
  • Muscle metabolism and nutrition
  • Chronic Obstructive Pulmonary Disease (COPD) Research
  • Cardiovascular and exercise physiology
  • Eating Disorders and Behaviors
  • Asthma and respiratory diseases
  • Motivation and Self-Concept in Sports
  • Optimism, Hope, and Well-being
  • Cardiac Health and Mental Health
  • Menstrual Health and Disorders
  • Behavioral Health and Interventions
  • Respiratory and Cough-Related Research
  • Winter Sports Injuries and Performance
  • Youth Development and Social Support
  • Travel-related health issues
  • Health and Wellbeing Research
  • Infection Control and Ventilation
  • Injury Epidemiology and Prevention
  • Body Composition Measurement Techniques

Research Institute for Olympic Sports
2017-2025

Research Institute of the Finnish Economy
2022-2024

LIKES – Foundation for Sport and Health Sciences
2010-2013

Finland University
2013

University of Eastern Finland
2013

Kuopio University Hospital
2008-2010

Central Finland Health Care District
2008-2009

Longitudinal studies demonstrate an average decline in physical activity (PA) from adolescence to young adulthood. However, while some subgroups of adolescents decrease activity, others increase or maintain high low activity. Activity domains may differ between (exhibiting different PA patterns), and they offer valuable information for targeted health promotion. Hence, the aim this study was identify patterns adulthood; also explore associations (i) changes sedentary time, (ii)...

10.1186/s12966-021-01130-x article EN cc-by International Journal of Behavioral Nutrition and Physical Activity 2021-06-30

Objectives The common cold is the main cause of medical time loss in elite sport. Rapid diagnosis has been a challenge that may be amenable to molecular point-of-care testing (POCT). Methods We performed prospective observational study Team Finland during 2018 Winter Olympic Games. There were 44 athletes and 68 staff members. chief physician recorded symptoms daily on standardised form. Two nasal swabs taken at onset symptoms. One swab was analysed within 45 min using POCT for respiratory...

10.1136/bjsports-2018-100487 article EN cc-by-nc British Journal of Sports Medicine 2019-05-29

The purpose of this study was to investigate the prevalence self-reported restrictive eating, current or past eating disorder, and menstrual dysfunction their relationships with injuries. Furthermore, we aimed compare these prevalences associations between younger (aged 15-24) older 25-45) athletes, elite non-elite athletes competing in lean non-lean sports. Data were collected using a web-based questionnaire. Participants 846 female representing 67 different Results showed that 25%, 18%,...

10.3390/nu13093275 article EN Nutrients 2021-09-19

There are no data relating symptoms of an acute respiratory illness (ARI) in general, and COVID-19 specifically, to return play (RTP).To determine if ARI associated with more prolonged RTP, days RTP (number, type, duration severity) differ athletes versus other ARI.Cross-sectional descriptive study.Online survey.Athletes confirmed/suspected (ARICOV) (n=45) (ARIOTH) (n=39).Participants recorded completed online survey detailing severity duration) three categories: 'nose throat', 'chest neck'...

10.1136/bjsports-2020-103782 article EN British Journal of Sports Medicine 2021-03-22

Upper respiratory tract infections ("common cold") are the most common acute illnesses in elite athletes. Numerous studies on exercise immunology have proposed that intense may increase susceptibility to infections. Virological data support view sparse, and several fundamental questions remain. Immunity viral is highly complex, there a lack of evidence minor short- or long-term alterations immunity athletes clinical implications. The degree which infected by viruses unclear. During major...

10.1007/s40279-022-01660-9 article EN cc-by Sports Medicine 2022-03-30

Acute respiratory illness (ARill) is common and threatens the health of athletes. ARill in athletes forms a significant component work Sport Exercise Medicine (SEM) clinicians. The aim this consensus to provide SEM clinician with an overview practical clinical approach non-infective International Olympic Committee (IOC) Medical Scientific appointed international group review Key areas were originally identified six subgroups IOC Consensus established following aspects: (1) epidemiology/risk...

10.1136/bjsports-2022-105567 article EN British Journal of Sports Medicine 2022-05-27

Acute illnesses affecting the respiratory tract are common and form a significant component of work Sport Exercise Medicine (SEM) clinicians. illness (ARill) can broadly be classified as non-infective ARill acute infections (ARinf). The aim this consensus is to provide SEM clinician with an overview practical clinical approach ARinf in athletes. International Olympic Committee (IOC) Medical Scientific Commission appointed international group review (non-infective ARinf) Six subgroups IOC...

10.1136/bjsports-2022-105759 article EN British Journal of Sports Medicine 2022-07-21

To describe the incidence and characteristics of injuries illnesses that occurred during 54th Nordic World Ski Championships in Planica (Slovenia) 2023, including disciplines cross-country skiing, combined ski jumping. In this prospective cohort study, national medical teams team local organiser collected data on a daily basis all new, exacerbated or recurrent registered athletes using IOC consensus recommendations. There were 596 (250 women, 346 men), with access to services. The covered...

10.1136/bmjsem-2024-002156 article EN cc-by-nc BMJ Open Sport & Exercise Medicine 2025-04-01

In diverse sports, warm-up (WUP) and cool-down (CD) activities are highly effective at improving performance-relevant factors reducing the risk of injury when applied systematically; however, scientific evidence is widely lacking in snow sports. Similarly, there a lack international harmonisation with current best practices; this especially applies to prevention efforts targeting younger athletes. This International Ski Snowboard Federation (FIS) consensus statement aims develop promote...

10.1136/bmjsem-2024-002351 article EN cc-by-nc BMJ Open Sport & Exercise Medicine 2025-04-01

Leisure-time physical activity (LTPA) and cardiorespiratory fitness contribute to mental health. Hopelessness has been linked impaired health, cardiovascular events mortality. Previous studies have focused on exercise depression. We examined the associations of LTPA with feelings hopelessness. In this cross-sectional study leisure-time activity, maximal oxygen uptake (VO2max), hopelessness risk factors were assessed in a population-based cohort 2428 men aged 42 – 60 years old at baseline....

10.1186/1471-2458-9-204 article EN cc-by BMC Public Health 2009-06-25

This study aimed to investigate the associations of competitive sport participation in adolescence and age at menarche (AAM) with body composition, femoral neck bone mineral density (BMD), physical performance, activity (PA) middle-aged women. 1098 women aged 47–55 years formed sample this retrospective study. Participants self-reported their PA level 13–16 AAM. The protocol also included dual-energy X-ray absorptiometry, performance tests, accelerometer-measured PA. were divided into three...

10.3390/jcm9123797 article EN Journal of Clinical Medicine 2020-11-24

Exercise has been shown to affect gut the microbiome and metabolic health, with athletes typically displaying a higher microbial diversity. However, research on microbiota systemic metabolism in elite remains scarce. In this study, we compared profiles serum metabolome of national team cross-country skiers at end an exhausting training competitive season those normally physically-active controls. The were analyzed using 16S rRNA amplicon sequencing. Serum metabolites nuclear magnetic...

10.3390/metabo12040335 article EN cc-by Metabolites 2022-04-07

Myllyaho, MM, Ihalainen, JK, Hackney, AC, Valtonen, M, Nummela, A, Vaara, E, Häkkinen, K, Kyröläinen, H, and Taipale, RS. Hormonal contraceptive use does not affect strength, endurance, or body composition adaptations to combined strength endurance training in women. J Strength Cond Res 35(2): 449-457, 2021-This study examined the effects of a 10-week period high-intensity on composition, serum hormone concentrations physically active women using hormonal contraceptives (HCs, n = 9) compared...

10.1519/jsc.0000000000002713 article EN The Journal of Strength and Conditioning Research 2018-06-21

Aim: Abundant evidence suggests that depression is a risk factor for cardiovascular disease and metabolic syndrome. Systemic low-grade inflammation evolving abdominal obesity are hypothesised to be underlying mechanisms explaining the relationship. To test this hypothesis we examined association of depressive symptoms in developing obesity. Methods: The subjects were 726 non-diabetic men, 42–60 age at baseline, participating Kuopio Ischemic Heart Disease Risk Factor Study. follow-up data was...

10.1177/1403494812461730 article EN Scandinavian Journal of Public Health 2012-10-05

The International Olympic Committee's (IOC) consensus statement on 'methods for recording and reporting of epidemiological data injury illness in sport' recommended standardising methods to advance collection consistency. However, additional aspects need be considered when these are applied specific sports settings. Therefore, we have developed a snow sports-specific extension the IOC promote harmonisation registration among athletes all levels categories different disciplines governed by...

10.1136/bjsports-2024-108720 article EN cc-by-nc British Journal of Sports Medicine 2024-11-07

Aims: Recent studies have shown that lack of hope is linked to cardiovascular morbidity and mortality. Little known, however, about the relationship hopelessness metabolic syndrome. The aim this study examine association Methods: This cross-sectional examines between syndrome as defined by National Cholesterol Education Program in a population-based cohort 1743 non-diabetic men aged 42, 48, 54 60 years old at baseline (1984—89). Hopelessness was measured one's expectations future reaching...

10.1177/1403494808094918 article EN Scandinavian Journal of Public Health 2008-11-01

Background Respiratory symptoms are commonly recognised in elite athletes. The occurrence, etiology and clinical presentation of the illnesses athletes is unclear. Methods We performed a prospective controlled study respiratory viral infections Team Finland during Nordic World Ski Championships 2019. There were 26 36 staff members. Nasal swabs taken at onset symptom on days 1, 7, 13 follow-up 14 days. viruses searched for by 3 different molecular multiplex tests. Fifty-two matched control...

10.1371/journal.pone.0250907 article EN cc-by PLoS ONE 2021-05-04

This study aimed to examine the effects of fatiguing power loading on neuromuscular properties, force production, and metabolic capacities during four phases menstrual cycle (MC): menstruation (M), midfollicular (mid FOL), ovulation (OV), midluteal LUT).Sixteen eumenorrheic women performed sessions maximal explosive leg press (2 × 10 at 60% one-repetition maximum load with 2-min recovery between sets). Serum hormones responses were measured.The protocol significantly decreased (between...

10.1249/mss.0000000000002904 article EN cc-by-nc-nd Medicine & Science in Sports & Exercise 2022-03-18

To determine the prevalence of menstrual dysfunction (MD; ie, oligomenorrhea or amenorrhea) and attitudes toward body weight among athletes non-athletes, we studied a cohort in adolescence (14-16 years) subsequently young adulthood (18-20 years). We further differences between reporting MD eumenorrheic at both time periods identified physical behavioral characteristics that might predict adulthood. Data were collected using questionnaires, accelerometers, pre-participation screening. In...

10.1111/sms.13838 article EN Scandinavian Journal of Medicine and Science in Sports 2020-09-26

For adolescent athletes, data on nutrition behaviors are limited. The present study aimed to evaluate the dietary habits of sports club participants (SPs) compared with those non-participants (NPs). cross-sectional 1917 adolescents aged 14-16 was based from Finnish Health Promoting Sports Club (FHPSC) study. health behavior surveys were conducted among SPs (n = 1093) and NPs 824). Logistic regression used test statistical significance differences in between NPs. more likely than eat...

10.1002/tsm2.249 article EN Translational Sports Medicine 2021-04-08

Abstract Purpose Whether elite athletes, who have been exposed to vigorous-intensity exercise combined with other stressors, elevated systemic low-grade inflammation, remains largely unclear. To address this question, we studied the levels of six inflammatory cytokines as potential biomarkers a state in athletes after an 11-month training and competition season. Methods We collected sera from 27 Finnish cross-country skiers gender- age-matched, moderately-exercising controls. The serum...

10.1007/s42978-022-00186-w article EN cc-by Journal of Science in Sport and Exercise 2022-09-19

Depression and hopelessness predict myocardial infarction, but it is unclear whether depression are independent predictors of infarction incidents. Hopelessness, depression, incidence rate 18 years later were measured in 2005 men. Cox regressions conducted with serving as individual infarction. Another model examined the two when adjusting for each other. predicted regressions, other, hopelessness, not Thus, these results suggest that

10.1177/1359105313498109 article EN Journal of Health Psychology 2013-08-29

Introduction : The present scientific consensus is that the menstrual cycle (MC) and hormonal contraceptive (HC) only influence performance trivially. Nevertheless, athletes perceive changes in they associate with different phases of their cycle. Methods A total 959 female completed a questionnaire, which 750 were included analysis. questionnaire questions about demographics experiences MC HC (symptoms, perceived impact on characteristics). Results In total, 55% reported natural while 45%...

10.1123/wspaj.2023-0102 article EN Women in Sport and Physical Activity Journal 2024-01-01
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