journal article·2025-03-25Open access

Effects of a CrossFit Training Program on Body Composition and Physical Fitness in Novice and Advanced Practitioners: An Inter-Individual Analysis

Pablo Aravena-Sagardia, Mauricio Barramuño-Medina, Bárbara Palma Vásquez, Sebastián Pichinao Pichinao, Paula Rodríguez Sepúlveda, Tomás Herrera-Valenzuela, Jordan Hernandez-Martinez, Álvaro Levín-Catrilao, Francisca Villagrán-Silva, Edgar Vásquez-Carrasco, Braulio Henrique Magnani Branco, Cristian Sandoval, Pablo Valdés-Badilla

Applied Sciences· Volume 15· Issue 7

Abstract

Background: CrossFit® has become a popular and effective training methodology. This study aimed to compare the effects of a four-week CrossFit training program and analyze the inter-individual variability on body composition (fat mass and fat-free mass) and physical fitness (push-ups, military press, back squat, deadlift, countermovement jump (CMJ), sit-ups, and 30 m sprint speed) in novice and advanced practitioners. Methods: A quasi-experimental design was used, with single-blinded (evaluators) and 2 parallel groups: novices (n = 10; age = 22.30 ± 0.81) and advanced practitioners (n = 11; age = 22.80 ± 1.41). The intervention consisted of 3 weekly 75 min sessions (4 weeks), with pre- and post-assessments. A two-factor mixed ANOVA and inter-individual analyses to classify responders (Rs) and non-responders (NRs) were performed. Results: No significant interaction effects were found. However, the novice group significantly improved back squat performance (p = 0.031). Inter-individual analysis showed higher proportions of Rs in the novice group for back squat (40%), deadlift (20%), military press (10%), CMJ (10%), sit-ups (30%), push-ups (30%), and 30 m sprint speed (10%) compared to the advanced group. Conclusions: CrossFit program did not significantly affect body composition, but novices exhibited significant back squat improvements. Considering experience levels can enhance training outcomes.
Source: crossref · Quality: baseline

Research context

OpenAlex topics: Sports Performance and Training · Physical Activity and Health · Sports injuries and prevention

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Physical Education Pedagogy, Faculty of Education, Universidad Autónoma de Chile, Temuco 4780000, Chile

Kinesiology Program, Faculty of Health Sciences, Universidad Autónoma de Chile, Temuco 4780000, Chile

Escuela de Kinesiología, Facultad de Salud, Universidad Santo Tomás, Temuco 4780000, Chile

Department of Physical Activity, Sports and Health Sciences, Faculty of Medical Sciences, Universidad de Santiago de Chile (USACH), Santiago 9170022, Chile

Department of Physical Activity Sciences, Universidad de Los Lagos, Osorno 5290000, Chile

Programa de Investigación en Deporte, Sociedad y Buen Vivir, Universidad de los Lagos, Osorno 5290000, Chile

Doctoral Program of Physical Activity Sciences, Faculty of Education Sciences, Universidad Católica del Maule, Talca 3466706, Chile

Programa de Doctorado en Ciencias Morfológicas, Facultad de Medicina, Universidad de La Frontera, Temuco 4811230, Chile

Occupational Therapy School, Faculty of Psychology, Universidad de Talca, Talca 3465548, Chile

Centro de Investigación en Ciencias Cognitivas, Faculty of Psychology, Universidad de Talca, Talca 3465548, Chile

Postgraduate Program in Health Promotion, Cesumar University, Maringá 87050-390, Paraná, Brazil

Escuela de Tecnología Médica, Facultad de Salud, Universidad Santo Tomás, Los Carreras 753, Osorno 5310431, Chile

Departamento de Medicina Interna, Facultad de Medicina, Universidad de La Frontera, Temuco 4811230, Chile

Núcleo Científico y Tecnológico en Biorecursos (BIOREN), Universidad de La Frontera, Temuco 4811230, Chile

Departament of Physical Activity Sciences, Faculty of Education Sciences, Universidad Católica del Maule, Talca 3466706, Chile

Sports Coach Career, School of Education, Universidad Viña del Mar, Viña del Mar 2520000, Chile

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