Related Experiment Video
Updated: May 13, 2025

Author Spotlight: Exploring the Impact of Reduced Resistance Exercise Volume on Metabolic Health
Published on: December 1, 2023
The effects of CrossFit® training in adults with obese or overweight: A systematic review of randomized controlled
N Blanco-Martínez1, D González-Devesa2, M A Sanchez-Lastra1
1Departamento de Didácticas Especiáis, Universidad de Vigo, Vigo, Spain; Well-Move Research Group, Galicia Sur Health Research Institute (IIS Galicia Sur), SERGAS-UVIGO, Vigo, Spain.
Abstract:
This systematic review and meta-analysis aimed to examine and critically analyze evidence on the effects of CrossFit® in individuals with overweight or obesity. A search was conducted in four databases (Scopus, WOS, SPORTDiscus, and MEDLINE/PubMed) covering publications from their inception to November 2024. Ten RCTs were analyzed. CrossFit® groups showed significant reductions in weight [six studies; n=161; Hedges' g: -0.76 (95%CI: -1.51, -0.02); p=0.008] and body mass index (BMI) [five studies; n=61; Hedges' g: -0.71 (95%CI: -1.45, 0.02); p=0.007]. However, changes in weight [six studies; n=320; 93% men; Hedges' g: 1.55 (95%CI: -0.66, 3.76); p=0.071] and BMI [five studies; n=120; Hedges' g: 1.24 (95%CI: -0.81, 3.29); p=0.094] were not significantly different compared to control groups. CrossFit® is a feasible option for improving body composition, metabolic health, and cardiorespiratory fitness in this population. However, its impact on blood pressure is inconclusive, and its effects on weight and BMI are comparable to traditional exercise modalities.
More Related Videos
06:28A Chronic High-Intensity Interval Training and Diet-Induced Obesity Model to Maximize Exercise Effort and Induce Physiologic Changes in Rats
Published on: April 28, 2023
12:59Improving Strength, Power, Muscle Aerobic Capacity, and Glucose Tolerance through Short-term Progressive Strength Training Among Elderly People
Published on: July 5, 2017
Related Concept Videos
Exercise and Cardiovascular Response
Light to moderate physical activity initiates a series of interconnected responses in the body. The heart rate modestly increases in anticipation of the workout, followed by widespread vasodilation as oxygen consumption by skeletal muscles increases. This results in decreased peripheral resistance, increased capillary blood flow, and accelerated...
Obesity
Exercise and Muscle Performance
Endurance exercises
Endurance exercises involve running, swimming, or cycling, which require repetitive movements with low force output. When a person engages in endurance exercise, a few noticeable changes occur in their skeletal muscles. For instance, the number of capillaries...
Exercise and Cardiac Output
Sustained exercise increases the muscles' oxygen demand, which can be...