Related Experiment Video
Updated: Apr 16, 2026

A Real-World High-Intensity Interval Training Protocol for Cardiorespiratory Fitness Improvement
Published on: February 22, 2022
Workplace exercise and educational program for improving fitness outcomes related to health in workers: a randomized
Bianca Lima Vilela1, Ana Amélia Benedito Silva, Claudio Andre Barbosa de Lira
1From the Departamento de Fisiologia (Ms Vilela and Dr Andrade), Universidade Federal de São Paulo, Campus São Paulo; Escola de Artes Ciências e Humanidades (Dr Benedito-Silva), Universidade de São Paulo; and Setor de Fisiologia Humana e do Exercício (Dr de Lira), Faculdade de Educação Física e Dança, Universidade Federal de Goiás, Goiânia, Goiás, Brazil.
Objective:
To investigate the effects of a workplace fitness and education program intervention on physical fitness of workers.
Methods:
Employees from a chemical plant (n = 60) participated in a 4-month longitudinal study. They were randomly distributed in control and experimental groups. The experimental group had 4 months of exercise training in 15-minute sessions. The following evaluations were performed before and after the training period: body composition, localized muscle strength, and flexibility.
Results:
The experimental group showed a significant decrease in body fat (24.7%) and a significant increase in lean mass (6.1%), flexibility (17.9%), sit-up test performance (39.8%), and push-up test performance (29.8%) after the workplace fitness and education program compared with initial values.
Conclusions:
A structured program of physical exercise was effective in improving body composition, abdominal strength, upper limb strength, and flexibility in workers.
Related Concept Videos
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...
Inclusive Fitness
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...
Exercise Stress Test
Exercise stress testing, commonly known as a treadmill test, is a noninvasive procedure used to evaluate cardiovascular function and diagnose heart conditions.
Definition
An exercise stress test measures the heart's response to exertion using a treadmill or stationary bicycle. Chest electrodes record the heart's electrical activity through an ECG, and blood pressure is monitored regularly.
Purposes
Models of Health Promotion and Illness Prevention II
The agent-host-environment model states that disease results...

