PMID- 29589508 OWN - NLM STAT- MEDLINE DCOM- 20190701 LR - 20190701 IS - 1543-5474 (Electronic) IS - 1543-3080 (Linking) VI - 15 IP - 8 DP - 2018 Aug 1 TI - A Longitudinal Analysis of the Relationships of Physical Activity and Body Fat With Nerve Growth Factor and Brain-Derived Neural Factor in Children. PG - 620-625 LID - 10.1123/jpah.2017-0483 [doi] AB - BACKGROUND: Nerve growth factor (NGF) and brain-derived neural factor (BDNF) are important for brain function and detectable in the blood. This study explored the longitudinal associations of physical activity and body fat with serum NGF and BDNF in children. METHODS: Two waves of measurements were performed 2 years apart in 8- to 11-year-old children, including physical activity using the ActiGraph model 7164, body composition by dual-energy X-ray absorptiometry, and serum NGF and BDNF determined by multiplex immunoassay. The first wave included 248 children. Full information maximum likelihood estimation with robust standard errors was applied in structural equation modeling. RESULTS: Vigorous physical activity showed a direct positive longitudinal relationship with NGF (standardized coefficient beta = 0.30, P = .01) but not with BDNF (beta = 0.04, P = .84). At the same time, body fat percentage was positively related to both NGF (beta = 0.59, P < .001) and BDNF (beta = 0.17, P = .04). There was an indication of an indirect relationship of vigorous physical activity with NGF (product of unstandardized coefficient beta = -0.18, P = .02) and BDNF (beta = -0.07, P = .05) through the negative relationship with body fat percentage (beta = -0.36, P < .001). CONCLUSIONS: Vigorous physical activity is directly related to serum NGF and indirectly through the level of body fat. The relationships with serum BDNF are more complex. FAU - Arvidsson, Daniel AU - Arvidsson D FAU - Johannesson, Elias AU - Johannesson E FAU - Andersen, Lars Bo AU - Andersen LB FAU - Karlsson, Magnus AU - Karlsson M FAU - Wollmer, Per AU - Wollmer P FAU - Thorsson, Ola AU - Thorsson O FAU - Dencker, Magnus AU - Dencker M LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20180328 PL - United States TA - J Phys Act Health JT - Journal of physical activity & health JID - 101189457 RN - 0 (Brain-Derived Neurotrophic Factor) RN - 0 (NGF protein, human) RN - 7171WSG8A2 (BDNF protein, human) RN - 9061-61-4 (Nerve Growth Factor) SB - IM MH - Absorptiometry, Photon MH - Accelerometry MH - Adipose Tissue/*metabolism MH - Animals MH - Brain/physiology MH - Brain-Derived Neurotrophic Factor/*blood MH - Child MH - Exercise/*physiology MH - Female MH - Humans MH - Longitudinal Studies MH - Male MH - Nerve Growth Factor/*blood OTO - NOTNLM OT - accelerometer OT - dual-energy X-ray absorptiometry OT - neurotrophins OT - serum OT - structural equation modeling EDAT- 2018/03/29 06:00 MHDA- 2019/07/02 06:00 CRDT- 2018/03/29 06:00 PHST- 2018/03/29 06:00 [pubmed] PHST- 2019/07/02 06:00 [medline] PHST- 2018/03/29 06:00 [entrez] AID - 10.1123/jpah.2017-0483 [doi] PST - ppublish SO - J Phys Act Health. 2018 Aug 1;15(8):620-625. doi: 10.1123/jpah.2017-0483. Epub 2018 Mar 28.