Agreement between methods to determine procedure for maximal exhalation during Hydrostatic Weighing: A Methodological Investigation

Mills, Claire D and De Ste Croix, Mark B and James, David V (2017) Agreement between methods to determine procedure for maximal exhalation during Hydrostatic Weighing: A Methodological Investigation. Sport and Exercise Medicine Open Journal, 3 (1). pp. 20-23. ISSN 2379-6375

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Abstract

Introduction: Current evidence suggests that there are many contentious issues that can impact significantly upon hydrostatic weighing assessments, for instance, obtaining reliable and precise data values within the testing environment [1,2]. Researchers such as Demura et al., [3] have addressed some of these issues, but there is still much uncertainty and significant challenges in terms of the procedure for maximal exhalation during hydrostatic weighing. Therefore, the due to some of these challenges, it was necessary to conduct a methodological investigation to reduce measurement error. Methods: (n = 22) students were recruited from the University of Gloucestershire BSc (Hons) Undergraduate programmes. All participants were over 18 years of age and all were free from disease, illness or injury ( s; age = 20.5  years, body mass = 68.7  kg and stretched stature = 172.0 8.3 cm). Results: When comparing body mass in water values between the two exhalation techniques, (pre-submersion and post-submersion exhalation) results indicated systematic bias (lower value for post-submersion technique). There was a significant difference in body mass values between pre-submersion technique (Mean  SD = 2.6 1.2 kg) and post-submersion technique (2.2 1.1 kg), t21 = 4.19 P < 0.01. Conclusion: When using hydrostatic weighing, the post-submersion exhalation technique was associated with greater measurement benefits thus resulting in a more reliable method.

Item Type: Article
Article Type: Article
Subjects: G Geography. Anthropology. Recreation > GV Recreation Leisure > GV557 Sports
Q Science > QP Physiology > QP301.H75 Physiology. Sport
R Medicine > RZ Other systems of medicine
Divisions: Schools and Research Institutes > School of Sport & Exercise
Research Priority Areas: Sport, Exercise, Health & Wellbeing
Depositing User: Claire Mills
Date Deposited: 10 Apr 2017 10:56
Last Modified: 10 Apr 2017 10:58
URI: http://eprints.glos.ac.uk/id/eprint/4425

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