Individual Study / Johnston et al.; J Sci Med Sport. 2013

Influence of an Intensified Competition on Fatigue and Match Performance in Junior Rugby League Players

Influence of an Intensified Competition on Fatigue and Match Performance in Junior Rugby League Players

Initiatives -
The aim of this study was to assess the physiological responses to an intensified rugby league competition and explore the relationships between fatigue and match performance. Note: All published information has been collected from the article referenced in the Marker Paper box below. Therefore, there may be variations with more advanced versions of the study.
Start Year
2013
End Year
2013
Funding
No financial support was obtained to carry out this research.

Design

Study design
Population cohort

Marker Paper

Johnston RD, Gabbett TJ, Jenkins DG. Influence of an intensified competition on fatigue and match performance in junior rugby league players. J Sci Med Sport. 2013;16(5):460‐465. doi:10.1016/j.jsams.2012.10.009

PUBMED 23245879

Recruitment

Sources of Recruitment
  • Individuals

Number of participants

Number of participants
15
Number of participants with biosamples

Access

Availability of data and biosamples

Data
Biosamples
Other

Timeline

Population

Fifteen junior rugby league players (n = 8 forwards, 7 backs; mean ± SE, age 16.6 ± 0.2 years; body mass 81.6 ± 3.0 kg; and height 178.9 ± 1.8 cm) competed in five 40 min games over 5 days (two games each on days 1 and 2, one game on day 4, and no games on days 3 and 5). Over the competition, players performed a countermovement jump to assess neuromuscular fatigue, provided a fingertip blood sample to measure blood creatine kinase, and completed a questionnaire to monitor perceived wellbeing; ratings of perceived effort were recorded following each game.
Selection Criteria
Gender
men
Newborns
Twins
Countries
  • Australia
Ethnic Origin
Health Status

Recruitment

Sources of recruitment
  • General population

Number of participants

Number of participants
15
Number of participants with biosamples
Data Collection Event
Global positioning system and video analysis of each game were used to assess match performance.
Start Date
2015
End Date
2015
Data sources
  • Geospatial technology
    • Global navigation satellite systems (GNSS) (e.g. GPS, GLONASS, Galileo, etc.)