Is there an acute exercise-induced physiological/biochemical threshold which triggers increased speed of cognitive functioning? A meta-analytic investigation

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Is there an acute exercise-induced physiological/biochemical threshold which triggers increased speed of cognitive functioning? A meta-analytic investigation

Terry McMorris [et al.] - Nama Orang;

Purpose: The purpose of this study was to examine, using meta-analytic measures, the evidence regarding the optimal exercise intensity at which improvements in speed of cognitive function are triggered. Specifically, it was hypothesized that the catecholamine, lactate, and ventilatory thresholds is the point at which significant improvements in speed of cognitive function are observed.
Methods: We compared mean effect sizes for threshold studies and for those studies where exercise intensity was classed as moderate (40%e 79% VO2max or equivalent) but in which the thresholds were not measured.
Results: Random effects meta-analysis showed significant, moderate, mean effect sizes for studies at the threshold ( g ¼ 0.58, Z ¼ 2.98,p < 0.003) and for those during moderate intensity exercise but in which the threshold was not measured ( g ¼ 0.54, Z ¼ 5.01, p < 0.001). There was no significant difference between mean effect sizes, which suggests that the thresholds are unlikely to represent a trigger point.
Conclusion: Moderate intensity exercise, even below the thresholds, can induce improved speed of cognition, possibly due to a combination of increased peripheral catecholamine concentrations inducing vagal/nucleus tractus solitarii pathway activation and central increases due to perceptions of stress.

Keywords: Catecholamine threshold; Lactate threshold; Stress; Vagus nerve; Ventilatory threshold

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Judul Seri: Journal of Sport and Health Science
No. Panggil: -
Penerbit: : Shanghai University of Sport., 2015
Deskripsi Fisik: Journal of Sport and Health Science 4 (2015) 4e13
Bahasa: English
ISBN/ISSN: -
Klasifikasi: -
Tipe Isi: -
Tipe Media: -
Tipe Pembawa: -
Edisi: -
Subjek: Sport And Kesehatan
Info Detail Spesifik: -
Pernyataan Tanggungjawab: Wati/Agus

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FULL TEXT:Is there an acute exercise-induced physiological/biochemical threshold which triggers increased speed of cognitive functioning? A meta-analytic investigation

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