Is Empirical Research on Periodization Trustworthy? A Comprehensive Review of Conceptual and Methodological Issues.

Periodization is a core concept in training. Recently, systematic reviews and meta-analyses have attempted to provide a comprehensive overview of the topic, but theoretical criticisms have arisen with regard to how such research has been conducted. The purpose of the study was to review comprehensiv...

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Publicado en:Journal of Sports Science & Medicine Vol. 16; no. 1; pp. 27 - 35
Autores principales: Afonso, José, Nikolaidis, Pantelis T., Sousa, Patrícia, Mesquita, Isabel
Formato: research systematic review tables/charts Journal Article
Publicado: Hakan Gur, Journal of Sports Science & Medicine Mar2017
Acceso en línea:Ver este registro en EBSCOhost
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      pub: Hakan Gur, Journal of Sports Science & Medicine
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        atl: Is Empirical Research on Periodization Trustworthy? A Comprehensive Review of Conceptual and Methodological Issues.
      aug:
        au:
          Afonso, José
          Nikolaidis, Pantelis T.
          Sousa, Patrícia
          Mesquita, Isabel
        affil: Centre for Research, Formation, Innovation, and Intervention in Sport, Faculty of Sport - University of Porto, Portugal
      sug:
        subj:
          Periodization
          Empirical Research Evaluation
          Athletic Training Methods
          Research Methodology Evaluation
          Study Design Evaluation
          Human
          Professional Practice, Evidence-Based
          Systematic Review
          CINAHL Database
          Medline
          Psycinfo
          PubMed
          SportDiscus
          Descriptive Statistics
          Randomized Controlled Trials Evaluation
          Adaptation, Physiological
          Training Effect (Physiology)
          Exercise Physiology
          Muscle Strength
          Time Factors
          Measurement Issues and Assessments
          Confounding
          Bias (Research)
          Nomenclature
          Athletic Training Programs
          Conceptual Framework
          Athletic Performance
          Physical Endurance
          Exercise Intensity
          Data Analysis, Statistical Methods
      ab: Periodization is a core concept in training. Recently, systematic reviews and meta-analyses have attempted to provide a comprehensive overview of the topic, but theoretical criticisms have arisen with regard to how such research has been conducted. The purpose of the study was to review comprehensively the conceptual and methodological issues surrounding empirical research on periodization in training with human subjects. A search was conducted late in February 2016 on Academic Search Complete, CINAHL Plus, MedicLatina, MEDLINE, PsycINFO, PubMed, Scielo, Scopus, SPORTDiscus and Web of Science. Forty-two randomized or randomized controlled trials were retrieved. Problems emerged in three domains: (a) Conceptually, periodization and variation were applied differently in research, while no empirical research tested predictions concerning direction, timing or magnitude of the adaptations; (b) Study design: More than 95% of papers investigated the 'physical' factor (mainly strength). Research on long-term effects was absent (no study lasted more than nine months). Controlling for confounding factors such as nutrition, supplementation and medication was largely ignored; (c) Data analysis was biased as dispersion in responsiveness was ignored when discussing the findings. Overall, research on periodization fails to analyze the conceptual premises proposed by these approaches.
      pubtype: Academic Journal
      doctype:
        research
        systematic review
        tables/charts
        Journal Article
      ougenre: Article
    language: English
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