Impact of Exercise and Ergonomics on the Perception of Fatigue in Workers: a pilot study

  • Aline Cristina Hirata Pinetti
  • Giovanna Ponce de Miranda
  • Noelly Cristina Harrison Mercer
  • Yanas Aparecida Zorzi
  • Mariane Guizeline Calderon
  • Rubens Alexandre Silva
  • Márcio Rogério de Oliveira Universidade Pitágoras Unopar



The supervised implementation of psychophysiological recovery breaks and physical exercise in the workplace can be motivational factors for employees to be productive and remain for a longer time at work. The aim of this study was to evaluate whether ergonomic conditions (including rest breaks) and exercise programs can reduce fatigue before, during and after work hours. Twenty participants, age range: 31- 48 years, were divided into four groups: 1) Exercise with rest breaks (n=5); 2) Exercise without rest breaks (n=5); 3) No exercise with rest breaks (n=5), 4). No exercise without rest breaks (n=5). The exercise group performed physical training, including resistance exercises, stretching and aerobic exercises for 4 weeks. The rest break was performed for 10 minutes and both exercise and rest were developed in the work place. To determine the fatigue effects on each intervention group, surveys with a 10-point Borg scale were used. In general, participants that conducted exercise program (1 and 2) showed less fatigue compared with those that did not perform the program (3 and 4), principally in the times during and after work hours (P < 0.03). This pilot study demonstrated that exercise programs may help to reduce fatigue during and after work hours.

Keywords: Physical Fitness. Occupational Health. Ergonomics.


A implementação supervisionada de pausas e o exercício físico no local de trabalho podem ser fatores motivacionais para que os funcionários sejam produtivos e permaneçam por mais tempo no trabalho. Avaliar se as condições ergonômicas (incluindo intervalos para descanso) e programas de exercícios podem reduzir a fadiga antes, durante e depois do horário de trabalho. Métodos: Vinte participantes, com faixa etária entre 31 - 48 anos, foram divididos em quatro grupos: 1) Exercício mais intervalos para descanso (n= 5); 2) Exercício sem intervalos para descanso (n= 5); 3), Nenhum exercício com intervalos para descanso (n= 5), 4) Nenhum exercício sem intervalos para descanso (n= 5). Os grupos 1 e 2 realizaram exercícios resistidos, alongamento e exercícios aeróbicos por 4 semanas. O intervalo para descanso foi realizado por 10 minutos e ambos foram desenvolvidos no local de trabalho. Para determinar os efeitos da fadiga em cada grupo de intervenção foi utilizada uma escala de Borg de 10 pontos. Em geral, os participantes que realizaram o programa de exercícios (grupos 1 e 2) apresentaram menor fadiga em comparação com aqueles que não realizaram o programa (grupos 3 e 4), principalmente durante e após o horário de trabalho (P <0,03). Este estudo piloto demonstrou que um programa de exercícios pode ajudar a reduzir a fadiga durante e após o horário de trabalho.

Palavras-chave: Aptidão Física. Saúde do Trabalhador. Ergonomia.


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