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Is there a sex difference in the bilateral deficit?
Halmstad University, School of Business, Engineering and Science, Biological and Environmental Systems (BLESS).
2015 (English)Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
Abstract [en]

The bilateral deficit can be described as when the sum of two unilateral movements exceeds

the bilateral output. If the sum does not exceed the bilateral output, a bilateral facilitation is

present. Little research has been done in males and females comparison of the bilateral deficit.

The purpose of the current study was therefore to compare the bilateral deficit between sexes

in a 1 repetition maximum (RM) leg press. Twenty participants, ten males and ten females,

were recruited (23.4±2.1 years, 71.2±13.1 kg, 172.2±8.9 cm) and seventeen of them

completed the study. The test consisted of two testing sessions (one unilateral with preferred

leg, and one bilateral session) with seven days in between. The 1 RM was attained within six

attempts, with a three minutes rest between every attempt. The current study showed a

bilateral deficit of males (5.6±4.6%) and a bilateral facilitation of females (0.6±5.9%). There

was a significant difference between sexes of p=0.031 (p<0.05). Previous studies have

examined males and females separately, with different methods and protocols. This study

used the same method and protocol in both sexes. Some suggestions of the mechanisms

behind the deficit have been proposed and may explain the current findings, but further

studies are needed. Future research needs to continue to explore and explain the sex

difference in the bilateral strength deficit.

Place, publisher, year, edition, pages
2015. , 25 p.
Keyword [en]
bilateral deficit, leg-press, bilateral, unilateral
National Category
Other Health Sciences
URN: urn:nbn:se:hh:diva-29499OAI: diva2:855603
Subject / course
Biomedicine Targeting Physical Education
2015-08-25, 18:46 (English)
Available from: 2015-11-18 Created: 2015-09-21 Last updated: 2015-11-18Bibliographically approved

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