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Horne S, Shaheen AF, Baltzopoulos B, Hills L. The netball injury evidence base: a scoping review of methodologies and recommendations for future approaches. Syst Rev 2024; 13:203. [PMID: 39090698 PMCID: PMC11295446 DOI: 10.1186/s13643-024-02629-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/26/2023] [Accepted: 07/23/2024] [Indexed: 08/04/2024] Open
Abstract
BACKGROUND Netball is a sport with a large participation base and a high risk of injuries. Effective injury prevention strategies are dependent upon a clear understanding of injury issues, aetiology and mechanisms, requiring robust research methodologies to ensure a reliable evidence base. This scoping review aims to identify the characteristics and range of netball injury research methodologies, to inform recommendations for future research. METHODS A systematic search of SPORTDiscus, MEDLINE, CINAHL and Academic Search Complete, PubMed, Scopus and Web of Science, from 1985 to May 2023 identified relevant studies. Inclusion criteria included peer-reviewed studies assessing injury incidence, aetiology and mechanisms in netball. RESULTS Following screening, 65 studies were included (68% descriptive epidemiology, 32% analytic epidemiology). Descriptive epidemiology reported data from hospital/clinic and insurance databases (57%) and netball competitions (43%). Only two studies used ongoing, systematic injury surveillance in netball cohorts, and significant heterogeneity existed in study designs, data collection methods, injury definitions and injury incidence rates calculations. Studies assessed a limited number of risk factors (descriptive competition studies: median: n = 4; analytic studies median: n = 6), with 76% using a simplistic reductionist approach to determine causality. Basic descriptions and retrospective recall of injury mechanisms reduced accuracy. Only two studies conducted comprehensive assessments of injury mechanisms using video-based methods. CONCLUSION To establish an accurate netball injury evidence base, future research should prioritise the development of reliable, continuous surveillance systems. The International Olympic Committee (IOC) consensus statement guidelines are recommended for accurate injury data collection and reporting. A multifactorial approach should be adopted to assess the complex interaction between multiple risk factors, player load and the injury inciting event. Comprehensive descriptions of injury mechanisms using video methods, alongside descriptions from medical staff are recommended. This information is crucial for developing targeted prevention strategies.
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Affiliation(s)
- Sara Horne
- Department of Life Sciences, Division of Sport, Health and Exercise Sciences, Brunel University London, Kingston Lane, Uxbridge, Middlesex, UB8 3PH, UK.
| | - Aliah Faisal Shaheen
- Department of Life Sciences, Division of Sport, Health and Exercise Sciences, Brunel University London, Kingston Lane, Uxbridge, Middlesex, UB8 3PH, UK
| | - Bill Baltzopoulos
- School of Sport and Exercise Sciences, Faculty of Science, Liverpool John Moores University, Canterbury, UK
| | - Laura Hills
- Department of Life Sciences, Division of Sport, Health and Exercise Sciences, Brunel University London, Kingston Lane, Uxbridge, Middlesex, UB8 3PH, UK
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2
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Horgan BG, Tee N, West NP, Drinkwater EJ, Halson SL, Colomer CME, Fonda CJ, Tatham J, Chapman DW, Haff GG. Acute Performance, Daily Well-Being, and Hormone Responses to Water Immersion After Resistance Exercise in Junior International and Subelite Male Volleyball Athletes. J Strength Cond Res 2023:00124278-990000000-00243. [PMID: 37043600 DOI: 10.1519/jsc.0000000000004428] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/14/2023]
Abstract
ABSTRACT Horgan, BG, Tee, N, West, NP, Drinkwater, EJ, Halson, SL, Colomer, CME, Fonda, CJ, Tatham, J, Chapman, DW, and Haff, GG. Acute performance, daily well-being and hormone responses to water immersion after resistance exercise in junior international and subelite male volleyball athletes. J Strength Cond Res XX(X): 000-000, 2023-Athletes use postexercise hydrotherapy strategies to improve recovery and competition performance and to enhance adaptative responses to training. Using a randomized cross-over design, the acute effects of 3 postresistance exercise water immersion strategies on perceived recovery, neuromuscular performance, and hormone concentrations in junior international and subelite male volleyball athletes (n = 18) were investigated. After resistance exercise, subjects randomly completed either 15-minute passive control (CON), contrast water therapy (CWT), cold (CWI), or hot water immersion (HWI) interventions. A treatment effect occurred after HWI; reducing perceptions of fatigue (HWI > CWT: p = 0.05, g = 0.43); improved sleep quality, compared with CON (p < 0.001, g = 1.15), CWI (p = 0.017, g = 0.70), and CWT (p = 0.018, g = 0.51); as well as increasing testosterone concentration (HWI > CWT: p = 0.038, g = 0.24). There were trivial to small (p < 0.001-0.039, g = 0.02-0.34) improvements (treatment effect) in jump performance (i.e., squat jump and countermovement jump) after all water immersion strategies, as compared with CON, with high variability in the individual responses. There were no significant differences (interaction effect, p > 0.05) observed between the water immersion intervention strategies and CON in performance (p = 0.153-0.99), hormone (p = 0.207-0.938), nor perceptual (p = 0.368-0.955) measures. To optimize recovery and performance responses, e.g., during an in-season competition phase, postresistance exercise HWI may assist with providing small-to-large improvements for up to 38 hours in perceived recovery (i.e., increased sleep quality and reduced fatigue) and increases in circulating testosterone concentration. Practitioners should consider individual athlete neuromuscular performance responses when prescribing postexercise hydrotherapy. These findings apply to athletes who aim to improve their recovery status, where postresistance exercise HWI optimizes sleep quality and next-day perceptions of fatigue.
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Affiliation(s)
- Barry G Horgan
- Australian Institute of Sport, Bruce, Australian Capital Territory, Australia
- School of Medical and Health Sciences, Edith Cowan University, Joondalup, Western Australia, Australia
- Brumbies Rugby, Bruce, Australian Capital Territory, Australia
| | - Nicolin Tee
- Australian Institute of Sport, Bruce, Australian Capital Territory, Australia
- Australian Catholic University, Watson, Australian Capital Territory, Australia
| | - Nicholas P West
- School of Medical Science and Menzies Health Institute QLD, Griffith University, Queensland, Australia
| | - Eric J Drinkwater
- School of Medical and Health Sciences, Edith Cowan University, Joondalup, Western Australia, Australia
- Center for Sport Research, School of Exercise & Nutrition Sciences, Deakin University, Geelong, Victoria, Australia
| | - Shona L Halson
- Australian Institute of Sport, Bruce, Australian Capital Territory, Australia
- Australian Catholic University, McAuley at Banyo, Queensland, Australia
| | - Carmen M E Colomer
- Australian Institute of Sport, Bruce, Australian Capital Territory, Australia
| | - Christopher J Fonda
- Australian Institute of Sport, Bruce, Australian Capital Territory, Australia
| | - James Tatham
- Australian Institute of Sport, Bruce, Australian Capital Territory, Australia
- Volleyball Australia, Australian Institute of Sport, Bruce, Australian Capital Territory, Australia
| | - Dale W Chapman
- Australian Institute of Sport, Bruce, Australian Capital Territory, Australia
- School of Medical and Health Sciences, Edith Cowan University, Joondalup, Western Australia, Australia
- Curtin University, Perth, Western Australia, Australia; and
| | - G Gregory Haff
- School of Medical and Health Sciences, Edith Cowan University, Joondalup, Western Australia, Australia
- Directorate of Psychology and Sport, University of Salford, Salford, Greater Manchester, United Kingdom
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Lathlean TJ, Newstead SV, Gastin PB. Elite Junior Australian Football Players With Impaired Wellness Are at Increased Injury Risk at High Loads. Sports Health 2022; 15:218-226. [PMID: 35524427 PMCID: PMC9951000 DOI: 10.1177/19417381221087245] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
BACKGROUND Elite junior Australian football players experience high training loads across levels of competition and training. This, in conjunction with impaired wellness, can predispose athletes to injury. HYPOTHESIS Elite junior Australian football players exposed to high loads with poor wellness are more likely to be at risk of injury than those with improved wellness. STUDY DESIGN Longitudinal prospective cohort study. LEVEL OF EVIDENCE Level 3. METHODS Data were collected and analyzed from 280 players across the 2014 season. Internal load was measured via session rating of perceived exertion. Player wellness was reported according to ratings of sleep quality, fatigue, soreness, stress, and mood. Week- and month-based training load measures were calculated, representing a combination of absolute and relative load variables. Principal component analysis factor loadings, based on 17 load and wellness variables, were used to calculate summed variable covariates. Injury was defined as "any injury leading to a missed training session or competitive match." Associations between covariates and injury risk (yes/no) were determined via logistic generalized estimating equations. RESULTS A significant interaction term between load and wellness on injury was found [odds ratio (OR) 0.76; 95% CI 0.62-0.92; P < 0.01), indicating that wellness acts as a "dimmer switch" of load on injury. Further, there was evidence of moderated mediation (OR 0.71; 95% CI 0.57-0.87; P < 0.01). When wellness was low, injury risk started to increase substantially at a 1-week load of 3250 au. CONCLUSIONS Subjective measures of training load are associated with injury risk through a nonlinear relationship. This relationship is further influenced by player wellness, which can amplify the risk of injury. There is evidence that higher stress is linked with injury and that soreness and sleep mediate any stress-injury relationship. CLINICAL RELEVANCE Coaching efforts to manage training load and player adaptive responses, including wellness, may reduce the risk of injury, with stress, soreness, and sleep particularly relevant at this level.
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Affiliation(s)
- Timothy J.H. Lathlean
- Adelaide Medical School, Faculty of
Health and Medical Sciences, The University of Adelaide, Adelaide, Australia,Monash University Accident Research
Centre (MUARC), Monash University, Clayton, Australia,Exercise and Sports Science, School of
Science and Technology, University of New England, Armidale, New South Wales,
Australia,Timothy J H Lathlean, PhD,
ESSAM AES AEP, Adelaide Medical School, Faculty of Health and Medical Sciences,
The University of Adelaide, Lyell McEwin Hospital, 5112, Australia (
) (Twitter: @TimLathlean)
| | - Stuart V. Newstead
- Monash University Accident Research
Centre (MUARC), Monash University, Clayton, Australia
| | - Paul B. Gastin
- La Trobe Sport and Exercise Medicine
Research Centre, School of Allied Health, Human Services and Sport, La Trobe
University, Melbourne, Victoria, Australia
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4
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Ruas CV, Latella C, Taylor JL, Haff GG, Nosaka K. Early Detection of Prolonged Decreases in Maximal Voluntary Contraction Force after Eccentric Exercise of the Knee Extensors. Med Sci Sports Exerc 2022; 54:267-279. [PMID: 35029591 DOI: 10.1249/mss.0000000000002797] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
PURPOSE We examined whether the magnitude of muscle damage indicated by changes in maximal voluntary isometric contraction (MVIC) strength 1 to 3 d after unaccustomed eccentric exercise (ECC) was correlated with changes in central and peripheral neuromuscular parameters immediately post-ECC. METHODS Twenty participants (19-36 yr) performed six sets of eight eccentric contractions of the knee extensors. Rate of force development (RFD) during knee extensor MVIC, twitch force, rate of force development (RFDRT) and rate of relaxation (RRRT) of the resting twitch, maximal M-wave (MMAX), voluntary activation, silent period duration, motor-evoked potentials (MEP) and short-interval intracortical inhibition were assessed before, immediately after, and 1 to 3 d post-ECC. Relationships between changes in these variables immediately post-ECC and changes in MVIC strength at 1 to 3 d post-ECC were examined by Pearson product-moment (r) or Spearman correlations. RESULTS Maximal voluntary isometric contraction strength decreased (-22.2% ± 18.4%) immediately postexercise, and remained below baseline at 1 (-16.3% ± 15.2%), 2 (-14.7% ± 13.2%) and 3 d post-ECC (-8.6% ± 15.7%). Immediately post-ECC, RFD (0-30-ms: -38.3% ± 31.4%), twitch force (-45.9% ± 22.4%), RFDRT (-32.5% ± 40.7%), RRRT (-38.0% ± 39.7%), voluntary activation (-21.4% ± 16.5%) and MEP/MMAX at rest (-42.5% ± 23.3%) also decreased, whereas the silent period duration at 10%-MVIC increased by 26.0% ± 12.2% (P < 0.05). Decreases in RFD at 0 to 30 ms, 0 to 50 ms, and 0 to 100 ms immediately post-ECC were correlated (P < 0.05) with changes in MVIC strength at 1 d (r = 0.56-0.60) and 2 d post-ECC (r = 0.53-0.63). Changes in MEP/MMAX at 10%-MVIC immediately post-ECC were correlated with changes in MVIC strength at 1 d (r = -0.53) and 2 d (r = -0.54) post-ECC (P < 0.05). CONCLUSIONS The magnitude of decrease in MVIC strength at 1 to 3 d after ECC was associated with the magnitude of changes in RFD and MEP/MMAX immediately post-ECC. However, based on individual data, these markers were not sensitive for the practical detection of muscle damage.
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Affiliation(s)
| | | | | | | | - Kazunori Nosaka
- Centre for Exercise and Sports Science Research, School of Medical and Health Sciences, Edith Cowan University, Joondalup, WA, AUSTRALIA
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5
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The Recovery Umbrella in the World of Elite Sport: Do Not Forget the Coaching and Performance Staff. Sports (Basel) 2021; 9:sports9120169. [PMID: 34941807 PMCID: PMC8705456 DOI: 10.3390/sports9120169] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2021] [Revised: 12/09/2021] [Accepted: 12/10/2021] [Indexed: 12/11/2022] Open
Abstract
In the field of sports science, the recovery umbrella is a trending topic, and even more so in the world of elite sports. This is evidenced by the significant increase in scientific publications during the last 10 years as teams look to find a competitive edge. Recovery is recognized to be an integral component to assist athlete preparation in the restoration of physical and psychological function, and subsequently, performance in elite team sports athletes. However, the importance of recovery in team staff members (sports coaches and performance staff) in elite sports appears to be a forgotten element. Given the unrelenting intense nature of daily tasks and responsibilities of team staff members, the elite sports environment can predispose coaches to increased susceptibility to psycho-socio physiological fatigue burden, and negatively affect health, wellbeing, and performance. Therefore, the aim of this opinion was to (1) develop an educational recovery resource for team staff members, (2) identify organizational task-specific fatigue indicators and barriers to recovery and self-care in team staff members, and (3) present recovery implementation strategies to assist team staff members in meeting their organizational functions. It is essential that we do not forget the coaching and performance staff in the recovery process.
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6
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Davis JK, Oikawa SY, Halson S, Stephens J, O'Riordan S, Luhrs K, Sopena B, Baker LB. In-Season Nutrition Strategies and Recovery Modalities to Enhance Recovery for Basketball Players: A Narrative Review. Sports Med 2021; 52:971-993. [PMID: 34905181 PMCID: PMC9023401 DOI: 10.1007/s40279-021-01606-7] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/18/2021] [Indexed: 01/15/2023]
Abstract
Basketball players face multiple challenges to in-season recovery. The purpose of this article is to review the literature on recovery modalities and nutritional strategies for basketball players and practical applications that can be incorporated throughout the season at various levels of competition. Sleep, protein, carbohydrate, and fluids should be the foundational components emphasized throughout the season for home and away games to promote recovery. Travel, whether by air or bus, poses nutritional and sleep challenges, therefore teams should be strategic about packing snacks and fluid options while on the road. Practitioners should also plan for meals at hotels and during air travel for their players. Basketball players should aim for a minimum of 8 h of sleep per night and be encouraged to get extra sleep during congested schedules since back-to back games, high workloads, and travel may negatively influence night-time sleep. Regular sleep monitoring, education, and feedback may aid in optimizing sleep in basketball players. In addition, incorporating consistent training times may be beneficial to reduce bed and wake time variability. Hydrotherapy, compression garments, and massage may also provide an effective recovery modality to incorporate post-competition. Future research, however, is warranted to understand the influence these modalities have on enhancing recovery in basketball players. Overall, a strategic well-rounded approach, encompassing both nutrition and recovery modality strategies, should be carefully considered and implemented with teams to support basketball players' recovery for training and competition throughout the season.
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Affiliation(s)
- Jon K Davis
- Gatorade Sports Science Institute, PepsiCo, Inc., 3800 Gaylord Parkway, Suite 210, Frisco, TX, 75034, USA.
| | - Sara Y Oikawa
- Gatorade Sports Science Institute, PepsiCo, Inc., Bradenton, FL, 34210, USA
| | - Shona Halson
- Institute for Health and Sport (iHeS), Victoria University, Melbourne, Australia.,Department of Physiology, Australian Institute of Sport, Canberra, Australia
| | | | - Shane O'Riordan
- Institute for Health and Sport (iHeS), Victoria University, Melbourne, Australia.,Department of Physiology, Australian Institute of Sport, Canberra, Australia
| | - Kevin Luhrs
- Gatorade Sports Science Institute, PepsiCo, Inc., Bradenton, FL, 34210, USA
| | - Bridget Sopena
- Gatorade Sports Science Institute, PepsiCo, Inc., Barrington, IL, 60010, USA
| | - Lindsay B Baker
- Gatorade Sports Science Institute, PepsiCo, Inc., Barrington, IL, 60010, USA
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7
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Suppiah HT, Swinbourne R, Wee J, He Q, Pion J, Driller MW, Gastin PB, Carey DL. Predicting Youth Athlete Sleep Quality and the Development of a Translational Tool to Inform Practitioner Decision Making. Sports Health 2021; 14:77-83. [PMID: 34751069 DOI: 10.1177/19417381211056078] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
BACKGROUND Identifying key variables that predict sleep quality in youth athletes allows practitioners to monitor the most parsimonious set of variables that can improve athlete buy-in and compliance for athlete self-report measurement. Translating these findings into a decision-making tool could facilitate practitioner willingness to monitor sleep in athletes. HYPOTHESIS Key predictor variables, identified by feature reduction techniques, will lead to higher predictive accuracy in determining youth athletes with poor sleep quality. STUDY DESIGN Cross-sectional study. LEVEL OF EVIDENCE Level 3. METHODS A group (N = 115) of elite youth athletes completed questionnaires consisting of the Pittsburgh Sleep Quality Index and questions on sport participation, training, sleep environment, and sleep hygiene habits. A least absolute shrinkage and selection operator regression model was used for feature reduction and to select factors to train a feature-reduced sleep quality classification model. These were compared with a classification model utilizing the full feature set. RESULTS Sport type, training before 8 am, training hours per week, presleep computer usage, presleep texting or calling, prebedtime reading, and during-sleep time checks on digital devices were identified as variables of greatest influence on sleep quality and used for the reduced feature set modeling. The reduced feature set model performed better (area under the curve, 0.80; sensitivity, 0.57; specificity, 0.80) than the full feature set models in classifying youth athlete sleep quality. CONCLUSION The findings of our study highlight that sleep quality of elite youth athletes is best predicted by specific sport participation, training, and sleep hygiene habits. CLINICAL RELEVANCE Education and interventions around the training and sleep hygiene factors that were identified to most influence the sleep quality of youth athletes could be prioritized to optimize their sleep characteristics. The developed sleep quality nomogram may be useful as a decision-making tool to improve sleep monitoring practice among practitioners.
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Affiliation(s)
- Haresh T Suppiah
- Sport and Exercise Science, School of Allied Health, Human Services and Sport, La Trobe University, Melbourne, Victoria, Australia.,National Youth Sports Institute, Singapore
| | | | - Jericho Wee
- National Youth Sports Institute, Singapore.,Human Potential Translational Research Programme, Yong Loo Lin School of Medicine, National University of Singapore, Singapore
| | - Qixiang He
- National Youth Sports Institute, Singapore.,Nanyang Technological University, Singapore
| | - Johan Pion
- HAN University of Applied Sciences, Arnhem, Netherlands.,Movement and Sports Sciences, Ghent University, Ghent, Belgium
| | - Matthew W Driller
- Sport and Exercise Science, School of Allied Health, Human Services and Sport, La Trobe University, Melbourne, Victoria, Australia
| | - Paul B Gastin
- Sport and Exercise Science, School of Allied Health, Human Services and Sport, La Trobe University, Melbourne, Victoria, Australia
| | - David L Carey
- Sport and Exercise Science, School of Allied Health, Human Services and Sport, La Trobe University, Melbourne, Victoria, Australia
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8
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Mental Fatigue Over 2 Elite Netball Seasons: A Case for Mental Fatigue to be Included in Athlete Self-Report Measures. Int J Sports Physiol Perform 2021; 17:160-169. [PMID: 34583327 DOI: 10.1123/ijspp.2021-0028] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2021] [Revised: 04/17/2021] [Accepted: 05/20/2021] [Indexed: 11/18/2022]
Abstract
PURPOSE Mental fatigue is emerging as an important consideration for elite sporting performance, yet it is rarely monitored. The present study assessed changes in mental fatigue in professional team-sport athletes across 2 seasons and examined the relationship between mental fatigue and other athlete self-report measures of well-being. METHODS Elite netballers contracted to all teams competing in Australia's premier professional netball competition during the 2018 and 2019 seasons (N = 154) participated. Using 5-point Likert scales, mental fatigue, fatigue (physical), tiredness, sleep quality, stress, mood, and motivation were assessed daily across 2 seasons composed of 14 round and finals series. RESULTS The ratings of mental fatigue significantly changed during both seasons. In 2018, lower ratings of mental fatigue were reported in round 1 versus 3, 4, 6, 8, and 14; round 7 versus 6; and round 6 versus 10 (P < .05). In 2019, lower ratings of mental fatigue were identified for round 1 versus 3, 9, 10 to 14, and semifinal; round 2 versus 10 to 13; and 5 versus 10 to 12 (P < .05). Ordinal regression revealed significant differences between mental fatigue and physical fatigue (P < .001), tiredness (P < .001), stress (P < .001), mood (P < .001), and motivation (P < .05). CONCLUSIONS The present study found mental fatigue to significantly fluctuate across a season in elite netballers. Moreover, perceived mental fatigue differed from physical fatigue, tiredness, stress, mood, and motivation. The data impress the need for mental fatigue to be included as an independent measure of athlete well-being. Monitoring of mental fatigue can allow practitioners to implement strategies to manage its influence on performance.
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9
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Griffin A, Kenny IC, Comyns TM, Purtill H, Tiernan C, O'Shaughnessy E, Lyons M. Training load monitoring in team sports: a practical approach to addressing missing data. J Sports Sci 2021; 39:2161-2171. [PMID: 33971793 DOI: 10.1080/02640414.2021.1923205] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
Training load (TL) is a modifiable risk factor that may provide practitioners with opportunities to mitigate injury risk and increase sports performance. A regular problem encountered by practitioners, however, is the issue of missing TL data. The purpose of this study was to examine the impact of missing TL data in team sports and to offer a practical and effective method of missing value imputation (MVI) to address this. Session rating of perceived exertion (sRPE) data from 10 male professional soccer players (age, 24.8 ± 5.0 years; height, 181.2 ± 5.1 cm; mass, 78.7 ± 6.4 kg) were collected over a 32-week season. Data were randomly removed at a range of 5-50% in increments of 5% and data were imputed using 12 MVI methods. Performance was measured using the normalized root-mean-square error and mean of absolute deviations. The best-fitting MVI method across all levels of missingness was Daily Team Mean (DTMean). Not addressing missing sRPE data may lead to more inaccurate calculations of other TL metrics (e.g., acute chronic workload ratio, training monotony, training strain). The DTMean MVI method may provide practitioners with a practical and effective approach to addressing the negative consequences of missing TL data.
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Affiliation(s)
- Alan Griffin
- Department of Physical Education and Sport Sciences, University of Limerick, Limerick, Ireland.,Health Research Institute, University of Limerick, Limerick, Ireland
| | - Ian C Kenny
- Department of Physical Education and Sport Sciences, University of Limerick, Limerick, Ireland.,Health Research Institute, University of Limerick, Limerick, Ireland
| | - Thomas M Comyns
- Department of Physical Education and Sport Sciences, University of Limerick, Limerick, Ireland.,Health Research Institute, University of Limerick, Limerick, Ireland
| | - Helen Purtill
- Health Research Institute, University of Limerick, Limerick, Ireland.,Department of Mathematics and Statistics, University of Limerick, Limerick, Ireland
| | - Caoimhe Tiernan
- Department of Sport, Exercise and Nutrition, Galway-Mayo Institute of Technology, Galway, Ireland
| | - Eoin O'Shaughnessy
- Department of Mathematics and Statistics, University of Limerick, Limerick, Ireland
| | - Mark Lyons
- Department of Physical Education and Sport Sciences, University of Limerick, Limerick, Ireland.,Health Research Institute, University of Limerick, Limerick, Ireland
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10
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Russell S, Jenkins DG, Halson SL, Juliff LE, Kelly VG. How do elite female team sport athletes experience mental fatigue? Comparison between international competition, training and preparation camps. Eur J Sport Sci 2021; 22:877-887. [PMID: 33764275 DOI: 10.1080/17461391.2021.1897165] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
Mental fatigue has been shown to negatively influence physical, technical and tactical aspects of sporting performance. However, mental fatigue is not routinely monitored or managed in elite sport and it is not clear whether mental fatigue occurs and/or changes across the varied contextual demands experienced by elite athletes in training, preparation and competition. This study explored self-report measures of mental fatigue across eight training camps and six competition periods (two benchmark tournaments and four international test series) with international netballers (n = 22, 25.9 ± 2.7 years) during the 2018-2019 representative period. Mental fatigue was higher during training camps (p < 0.001; 3.20 [3.12, 3.27]) and preparation camps (p < 0.05; 3.27 [3.19, 3.34]) compared to the competition periods (3.49 [3.44, 3.55]). Significant within-group differences were also identified between individual preparation camps and competition subsets. Higher mental fatigue was reported during the preparation camp for international test series 2 comparative to the preparation camp for benchmark tournament 1 (p = 0.047). For individual competitions; greater mental fatigue was found during the international test series 3 competition in comparison to both the benchmark tournament 1 (p <0.001) and international test series 1 (p = 0.020) competition periods. International representative netballers experience differing levels of mental fatigue across training and preparation camps and competition periods. Practitioners should be aware that athletes report instances of elevated mental fatigue across camps, and competition. Mental fatigue is not limited to competition and thus is recommended to be monitored during periods of training and preparation for competition. HighlightsInternational representative netballers experience differing levels of mental fatigue across camp and competition environments.Mental fatigue was higher during training camps and preparation camps compared to the competition periods.Mental fatigue is not limited to competition so is recommended to be monitored during periods of training and preparation for competition.
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Affiliation(s)
- Suzanna Russell
- School of Human Movement & Nutrition Sciences, The University of Queensland, Brisbane, Australia.,Queensland Academy of Sport, Nathan, Australia
| | - David G Jenkins
- School of Human Movement & Nutrition Sciences, The University of Queensland, Brisbane, Australia.,School of Health and Sport Sciences, University of The Sunshine Coast, Sippy Downs, Australia
| | - Shona L Halson
- School of Behavioural and Health Sciences, Australian Catholic University, McAuley at Banyo, Australia
| | - Laura E Juliff
- Netball Australia, High-performance Unit, Melbourne, Australia
| | - Vincent G Kelly
- School of Exercise & Nutrition Sciences, Queensland University of Technology, Brisbane, Australia
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11
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Dominski FH, Siqueira TC, Tibana RA, Andrade A. Injuries in functional fitness: an updated systematic review. J Sports Med Phys Fitness 2021; 62:673-683. [PMID: 33721984 DOI: 10.23736/s0022-4707.21.12218-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
INTRODUCTION This study aimed to analyze injuries of functional fitness participants through a systematic review. EVIDENCE ACQUISITION A systematic search of the literature was conducted in CINAHL, EMBASE, PEDro, PubMed, SCOPUS, SPORTDiscus, and Web of Science, supplemented by searching in the grey literature, from 2017 to November 2020. This systematic review followed the PRISMA guidelines and was documented in the PROSPERO registry (CRD42020201259). Two reviewers independently extracted data including methodological (age, sex, time of practice, location, period, time frame, and completion rate) and injury (definition, diagnosis, prevalence, incidence, severity, mechanism, type, location, risk factors, and treatment) variables, as well as assessing study quality and risk of bias. EVIDENCE SYNTHESIS Twenty-six studies were included (10967, range 6-3049, participants). Injury was defined fairly differently across studies. The majority of studies used a retrospective study design and the main variables reported were prevalence, body location, and associated factors of injuries. The mean prevalence of musculoskeletal injuries was 32.8%, ranging from 2.4 to 60.6%, and the injury incidence per 1000 hours ranged from 0.21 to 67 36. The most affected body location in the studies was the shoulder, followed by lumbar spine, and knee. Muscle, joint, and ligament/tendon injuries were the most frequently reported. The majority of studies were of moderate methodological quality. All studies were considered as high risk of bias. CONCLUSIONS This review broadened the scope of 75 previous reviews on injuries in functional fitness. There have been few investigations regarding severity, mechanism, and treatment of injuries, so further research is warranted.
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Affiliation(s)
- Fábio H Dominski
- Laboratory of Sport and Exercise Psychology, Human Movement Sciences Graduate Program, College of Health and Sport Science of the Santa Catarina State University (UDESC), Florianópolis, Brazil - .,Univille University, Joinville, Brazil -
| | - Thais C Siqueira
- Laboratory of Sport and Exercise Psychology, Human Movement Sciences Graduate Program, College of Health and Sport Science of the Santa Catarina State University (UDESC), Florianópolis, Brazil
| | - Ramires A Tibana
- Graduate Program in Health Sciences, Faculty of Medicine, Federal University of Mato Grosso (UFTM), Cuiabá, Brazil
| | - Alexandro Andrade
- Laboratory of Sport and Exercise Psychology, Human Movement Sciences Graduate Program, College of Health and Sport Science of the Santa Catarina State University (UDESC), Florianópolis, Brazil
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