Advanced search
Start date

Do active pauses change muscle electrical activity and oxygenation during repetitive manual task?

Grant number: 13/05761-0
Support type:Scholarships in Brazil - Doctorate (Direct)
Effective date (Start): August 01, 2013
Effective date (End): January 31, 2018
Field of knowledge:Health Sciences - Physiotherapy and Occupational Therapy
Principal researcher:Ana Beatriz de Oliveira
Grantee:Letícia Bergamin Januário
Home Institution: Centro de Ciências Biológicas e da Saúde (CCBS). Universidade Federal de São Carlos (UFSCAR). São Carlos , SP, Brazil
Associated scholarship(s):15/13581-7 - Do active pauses change muscle electrical activity and oxygenation during repetitive manual task?, BE.EP.DD


The main objective of this project is to study the effects of active pauses on trapezius and serratus anterior muscles during a simulated industrial repetitive task. The investigation will be based on three studies aiming at (1) synthesizing the current methods of active pauses' application, in workers who perform monotonous, static and repetitive tasks (Study 1); (2) investigating the effect of passive and active pauses on trapezius and serratus anterior electromyographical activity and oxygenation during a standardized repetitive task performed by healthy subjects (Study 2) and by subjects with chronic trapezius myalgia (Study 3). The literature review will be performed using the following databases: PubMed-MEDLINE, Embase, Cochrane, PEDro and Web of Science, through the combination of the following key-words: active pause, effect, assessment, evaluation and work. The procedure used to select papers will be based on current guidelines. The quality of the studies will be performed using part of a scale proposed by Ariens in 2000. The results of this review will allow to plan how active pauses will be applied on the Studies 2 and 3. The experimental procedure used to evaluate active pauses in the laboratory will be based on a standardized repetitive task (non-computer based task). Fifteen healthy women will be evaluated for muscle activity (surface electromyography), and muscle oxygenation (near-infrared spectroscopy). The neck-shoulder region will be investigated (descending, transverse and ascending part of the trapezius, and serratus anterior muscles). Both head position and arm elevation postures will be recorded in order to control possible confounders. The same procedure will be performed with fifteen experienced women who present chronic (more than six months) trapezius myalgia (Study 3). We believe that the results will contribute with scientific evidence on the beneficial effect of active pauses and to support practitioners to better pauses at work. (AU)

News published in Agência FAPESP Newsletter about the scholarship:
Articles published in other media outlets (0 total):
More itemsLess items

Scientific publications
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
JANUARIO, LETICIA BERGAMIN; MADELEINE, PASCAL; CID, MARINA MACHADO; SAMANI, AFSHIN; OLIVEIRA, ANA BEATRIZ. Can exposure variation be promoted in the shoulder girdle muscles by modifying work pace and inserting pauses during simulated assembly work?. APPLIED ERGONOMICS, v. 66, p. 151-160, JAN 2018. Web of Science Citations: 4.
JANUARIO, LETICIA BERGAMIN; OLIVEIRA, ANA BEATRIZ; CID, MARINA MACHADO; MADELEINE, PASCAL; SAMANI, AFSHIN. The coordination of shoulder girdle muscles during repetitive arm movements at either slow or fast pace among women with or without neck-shoulder pain. HUMAN MOVEMENT SCIENCE, v. 55, p. 287-295, OCT 2017. Web of Science Citations: 1.
JANUARIO, LETICIA BERGAMIN; CARREIRA MOREIRA, ROBERTA DE FATIMA; CID, MARINA MACHADO; SAMANI, AFSHIN; MADELEINE, PASCAL; OLIVEIRA, ANA BEATRIZ. Effects of active pause pattern of surface electromyographic activity among subjects performing monotonous tasks: A systematic review. JOURNAL OF ELECTROMYOGRAPHY AND KINESIOLOGY, v. 30, p. 196-208, OCT 2016. Web of Science Citations: 7.

Please report errors in scientific publications list by writing to: