Moderate energy restriction with high protein diet results in healthier outcome in women

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dc.contributor.author Mero, Antti A.
dc.contributor.author Huovinen, Heikki
dc.contributor.author Matintupa, Olle
dc.contributor.author Hulmi, Juha J.
dc.contributor.author Puurtinen, Risto
dc.contributor.author Hohtari, Hannele
dc.contributor.author Karila, Tuomo AM
dc.date.accessioned 2011-05-11T07:20:55Z
dc.date.available 2011-05-11T07:20:55Z
dc.date.issued 2010
dc.identifier.citation Mero, A., Huovinen, H., Matintupa, O., Hulmi, J., Puurtinen, R., Hohtari, H. & Karila, T. (2010). Moderate energy restriction with high protein diet results in healthier outcome in women. Journal of the International Society of Sports Nutrition, 7 (4), 1-11. doi:10.1186/1550-2783-7-4
dc.identifier.issn 1550-2783
dc.identifier.uri http://hdl.handle.net/123456789/26934
dc.description.abstract BACKGROUND: The present study compares two different weight reduction regimens both with a moderately high protein intake on body composition, serum hormone concentration and strength performance in non-competitive female athletes. METHODS: Fifteen normal weighted women involved in recreational resistance training and aerobic training were recruited for the study (age 28.5 ± 6.3 yr, height 167.0 ± 7.0 cm, body mass 66.3 ± 4.2 kg, body mass index 23.8 ± 1.8, mean ± SD). They were randomized into two groups. The 1 KG group (n = 8; energy deficit 1100 kcal/day) was supervised to reduce body weight by 1 kg per week and the 0.5 KG group (n = 7; energy deficit 550 kcal/day) by 0.5 kg per week, respectively. In both groups protein intake was kept at least 1.4 g/kg body weight/day and the weight reduction lasted four weeks. At the beginning of the study the energy need was calculated using food and training diaries. The same measurements were done before and after the 4-week weight reduction period including total body composition (DXA), serum hormone concentrations, jumping ability and strength measurements RESULTS: During the 4-week weight reduction period there were no changes in lean body mass and bone mass, but total body mass, fat mass and fat percentage decreased significantly in both groups. The changes were greater in the 1 KG group than in the 0.5 KG group in total body mass (p < 0.001), fat mass (p < 0.001) and fat percentage (p < 0.01). Serum testosterone concentration decreased significantly from 1.8 ± 1.0 to 1.4 ± 0.9 nmol/l (p < 0.01) in 1 KG and the change was greater in 1 KG (30%, p < 0.001) than in 0.5 KG (3%). On the other hand, SHBG increased significantly in 1 KG from 63.4 ± 17.7 to 82.4 ± 33.0 nmol/l (p < 0.05) during the weight reducing regimen. After the 4-week period there were no changes in strength performance in 0.5 KG group, however in 1 KG maximal strength in bench press decreased (p < 0.05) while endurance strength in squat and counter movement jump improved (p < 0.05) CONCLUSION: It is concluded that a weight reduction by 0.5 kg per week with ~1.4 g protein/kg body weight/day can be recommended to normal weighted, physically active women instead of a larger (e.g. 1 kg per week) weight reduction because the latter may lead to a catabolic state. Vertical jumping performance is improved when fat mass and body weight decrease. Thus a moderate weight reduction prior to a major event could be considered beneficial for normal built athletes in jumping events. en
dc.language.iso eng
dc.publisher BioMed Central
dc.relation.ispartofseries Journal of the International Society of Sports Nutrition
dc.rights © 2010 Mero et al; licensee BioMed Central Ltd. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
dc.rights.uri http://creativecommons.org/licenses/by/2.0
dc.subject.other painonpudotus en
dc.subject.other proteiini en
dc.subject.other naiset en
dc.title Moderate energy restriction with high protein diet results in healthier outcome in women
dc.type Article en
dc.identifier.urn URN:NBN:fi:jyu-2011051110774
dc.contributor.laitos Liikuntabiologian laitos fi
dc.contributor.laitos Department of Biology of Physical Activity en
dc.type.uri http://purl.org/eprint/type/JournalArticle
dc.identifier.doi doi:10.1186/1550-2783-7-4
dc.description.version Published PDF
eprint.status http://purl.org/eprint/type/status/PeerReviewed

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