Development and psychometric testing of the ‘barriers to physical activity during pregnancy scale’ (BPAPS)

Leila Amiri-Farahani, Katayon Ahmadi, Syedeh Batool Hasanpoor-Azghady, Sally Pezaro

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)
84 Downloads (Pure)

Abstract

Background
Pregnancy can affect the amount of physical activity that women engage in, so ensuring adequate physical activity in pregnant women can be a challenge. Therefore, there is a need to explore and identify barriers to physical activity in this population. Consequently, this study was conducted in order to develop and validate a scale to assess barriers to physical activity in pregnant populations.

Methods
The study was conducted in two phases. During phase 1, a comprehensive review of the most relevant literature from electronic databases on barriers to physical activity was carried out and appropriate scale items were extracted using a deductive approach. During phase 2, the psychometric properties of the extracted scale items were determined using face, content and construct validity, internal consistency and stability. Qualitative and quantitative face validity was assessed via face-to-face interviews with 30 and 10 pregnant women, respectively. To confirm the qualitative and quantitative content validity, 10 experts in the field of research and instrument design were invited to complete the resulting scale. To assess construct validity, the scale items were further tested among 320 pregnant women attending perinatal clinics at health centers in Ilam, Iran, where data were collected via continuous sampling. The internal consistency and stability of the study were measured by Cronbach’s alpha and intra-class correlation coefficient (ICC), respectively.

Results
Following a review of the relevant literature, 48 items for the BPAPS were extracted. Subsequent to the assessment of face and content validity, the number of items was reduced to 38. Through a subsequent exploratory factor analysis, the number of items dropped further to 29. These items were then structured under four major factors. Finally, the internal consistency and stability of the scale was confirmed by a Cronbach alpha coefficient of 0.824 and a test-retest reliability score of 0.87.

Conclusion
Findings show that the 29-item scale to assess barriers to physical activity in pregnant populations is a valid and appropriate instrument.
Original languageEnglish
Article number1483
Number of pages9
JournalBMC Public Health
Volume21
DOIs
Publication statusPublished - 29 Jul 2021

Bibliographical note

This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission
directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/)
applies to the data made available in this article, unless otherwise stated in a
credit line to the data.

Funder

The present article was funded by the Student Research Committee of Faculty of Nursing and Midwifery in Iran University of Medical Sciences, Tehran, Iran.

Keywords

  • Barriers
  • Exercise
  • Physical activity
  • Pregnancy
  • Validated scale

ASJC Scopus subject areas

  • Public Health, Environmental and Occupational Health

Fingerprint

Dive into the research topics of 'Development and psychometric testing of the ‘barriers to physical activity during pregnancy scale’ (BPAPS)'. Together they form a unique fingerprint.

Cite this