Cristian Martínez

Dr. Cristian Martínez

orcid

Research Focus & Metrics

Academic Career Length

11Years (2016-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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1 August 2016 in Journal of Science and Medicine in Sport
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Journal Article
Closed access
Rodrigo Ramirez-CampilloRodrigo Ramirez-Campillo
Rodrigo Ramirez-Campillo
José Antonio Gonzalez-JuradoJosé Antonio Gonzalez-Jurado
José Antonio Gonzalez-Jurado
CMCristian Martínez
Cristian Martínez
Fabio NakamuraFabio Nakamura
Fabio Nakamura
LPLuis Peñailillo
Luis Peñailillo
Mikel IzquierdoMikel Izquierdo
Mikel Izquierdo

7 June 2021 in Brain Sciences
Verified
Journal Article
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FCFalonn Contreras
Falonn Contreras
CCChristian Campos-Jara
Christian Campos-Jara
CMCristian Martínez
Cristian Martínez
Luis Javier Chirosa RíosLuis Javier Chirosa Ríos
Luis Javier Chirosa Ríos
DMDario Martinez-Garcia
Dario Martinez-Garcia
One of the most studied aspects of children’s cognitive development is that of the development of the executive function, and research has shown that physical activity has been demonstrated as a key factor in its enhancement. This meta-analysis aims to assess the impact of specific sports interventions on the executive function of children and teenagers. A systematic review was carried out on 1 November 2020 to search for published scientific evidence that analysed different sports programs that possibly affected executive function in students. Longitudinal studies, which assessed the effects of sports interventions on subjects between 6 and 18 years old, were identified through a systematic search of the four principal electronic databases: Web of Science, PubMed, Scopus, and EBSCO. A total of eight studies, with 424 subjects overall, met the inclusion criteria and were classified based on one or more of the following categories: working memory, inhibitory control, and cognitive flexibility. The random-effects model for meta-analyses was performed with RevMan version 5.3 to facilitate the analysis of the studies. Large effect sizes were found in all categories: working memory (ES −1.25; 95% CI −1.70; −0.79; p < 0.0001); inhibitory control (ES −1.30; 95% CI −1.98; −0.63; p < 0.00001); and cognitive flexibility (ES −1.52; 95% CI −2.20; −0.83; p < 0.00001). Our analysis concluded that healthy children and teenagers should be encouraged to practice sports in order to improve their executive function at every stage of their development.
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FCFalonn Contreras
Falonn Contreras
Rodrigo Ramirez-CampilloRodrigo Ramirez-Campillo
Rodrigo Ramirez-Campillo
ECEnrique Cerda-Vega
Enrique Cerda-Vega
RCRodrigo Campos-Jara
Rodrigo Campos-Jara
CMCristian Martínez
Cristian Martínez
CCChristian Campos-Jara
Christian Campos-Jara
Executive function is among the most affected cognitive dimensions in depression. Physical exercise may improve executive function (e.g., working memory, inhibition, cognitive flexibility), although this is without consensus on adults with depression. Through this systematic review, we aim to elucidate the effects of physical exercise programs on executive functions in adults with depression. The literature search was performed in four relevant electronic databases, combining keywords and medical subject headings, from inception until September 2022. Controlled interventions, involving adults with depression, and reporting working memory, inhibition, and/or cognitive flexibility pre-post-intervention data, were considered includable. Results from meta-analyses included effect size (ES, i.e., Hedges’ g) values reported with 95% confidence intervals (95%CIs), with p set at ≤0.05. Seven studies were included, including 202 men and 457 women (age: 21.0–51.2 years; mild–moderate depression). For working memory, a small favoring effect was observed in the experimental groups compared with controls (ES = 0.33, 95%CI = 0.04–0.61; p = 0.026; I2 = 64.9%). For inhibition, physical exercise had a small favoring non-significant effect compared with controls (ES = 0.28, 95%CI = −0.17–0.74; p = 0.222; I2 = 72.4%). Compared with the control group, physical exercise had a trivial effect on cognitive flexibility (ES = 0.09, 95%CI = −0.21–0.39; p = 0.554; I2 = 68.4%). In conclusion, physical exercise interventions may improve working memory behavioral measures in adults with mild-to-moderate depression when compared with active and passive control conditions. However, the reduced number of available high-quality studies precludes more lucid conclusions.

1 February 2020 in Gait & Posture
Verified
Journal Article
Closed access
FGFelipe García-Pinillos
Felipe García-Pinillos
Antonio Cartón-LlorenteAntonio Cartón-Llorente
Antonio Cartón-Llorente
Diego Jaén-CarrilloDiego Jaén-Carrillo
Diego Jaén-Carrillo
Pedro Delgado-FloodyPedro Delgado-Floody
Pedro Delgado-Floody
VCVanessa Carrasco
Vanessa Carrasco
Luis Enrique Roche SeruendoLuis Enrique Roche Seruendo
Luis Enrique Roche Seruendo

FCFalonn Contreras
Falonn Contreras
Rodrigo Ramirez-CampilloRodrigo Ramirez-Campillo
Rodrigo Ramirez-Campillo
ECEnrique Cerda-Vega
Enrique Cerda-Vega
RCRodrigo Campos-Jara
Rodrigo Campos-Jara
CMCristian Martínez
Cristian Martínez
CCChristian Campos-Jara
Christian Campos-Jara
Exercise programs of moderate-to-vigorous intensity have been shown to improve the cognitive performance of older people. However, the specific effects of sports-based exercise programs on cognitive performance, particularly executive functions, remain unclear. Therefore, the purpose of this study is to clarify the effects of sports-based exercise programs on executive functions in older adults using a systematic review and meta-analysis of the scientific literature. A systematic review was conducted between 1 March and 1 July 2022, to look for published scientific evidence that analyzed different sports programs that may have affected executive function in healthy older adults. Longitudinal studies, which assessed the effects of sports interventions on healthy older adults, were identified through a systematic search of the four principal electronic databases: Web of Science, PubMed, Scopus, and EBSCO. A total of nine studies with a total of 398 subjects met the inclusion criteria and were classified based on one or more of the following categories: working memory, inhibition, and cognitive flexibility. The DerSimonian and Laird random-effects model was performed using the Comprehensive Meta-Analysis software to facilitate the analysis of the studies. Statistical significance was set at p ≤ 0.05. In terms of working memory, a small but positive significant effect was noted for the intervention group compared to the control group (effect size (ES) = 0.35, 95% confidence interval (CI) = 0.04–0.67; p = 0.029; I2 = 36.7%); in terms of inhibition, the intervention had a small favoring but no significant effect compared to the control group (ES = 0.20, 95% CI = −0.42–0.84; p = 0.517; I2 = 78.8%); and in terms of cognitive flexibility, the intervention had a small favoring but no significant effect compared to the control group (ES = 0.39, 95% CI = −0.11–0.89; p = 0.131; I2 = 75.5%). Our findings suggest that healthy older adults should be encouraged to participate in sports to improve their working memory; however, more studies are required in this area to reach more robust conclusions. This systematic review was registered with the International Prospective Register of Systematic Reviews (registration number: CRD42022284788).

13 November 2020 in Nutrients
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Pedro Delgado-FloodyPedro Delgado-Floody
Pedro Delgado-Floody
Felipe Caamaño-NavarreteFelipe Caamaño-Navarrete
Felipe Caamaño-Navarrete
IGIris Guzmán-Guzmán
Iris Guzmán-Guzmán
Daniel Jerez-MayorgaDaniel Jerez-Mayorga
Daniel Jerez-Mayorga
CMCristian Martínez
Cristian Martínez
Cristian ÁlvarezCristian Álvarez
Cristian Álvarez
The objective of the present study was to determine the association between lifestyle parameters (i.e., physical activity (PA) level, screen time (ST), fitness and food habits) and health-related quality of life (HRQoL) in ethnic ascendant schoolchildren (i.e., Mapuche ascendant). This cross-sectional study included 619 schoolchildren with ethnic (EA; n = 234, 11.6 ± 1.0 years) and non-ethnicity ascendant (NEA; n = 383, 11.7 ± 1.1 years) from Araucanía, Chile. HRQoL and lifestyle were measured using a standard questionnaire and cardiometabolic markers (body mass index (BMI), waist circumference (WC), waist-to-height ratio (WtHR), systolic (SBP) and diastolic blood pressure (DBP)) and cardiorespiratory fitness (CRF) were additionally included. In the EA schoolchildren, the HRQoL reported association with CRF adjusted by age and sex (β; 0.12, p = 0.018) and non-adjusted with foods habits (β; 0.11, p = 0.034). By contrast, ST adjusted by age and sex presented an inverse association with HRQoL (β; −2.70, p < 0.001). EA schoolchildren showed low HRQoL (p = 0.002), low nutritional level (p = 0.002) and low CRF (p < 0.001) than NEA peers. Moreover, children’s ethnic presence showed an association with low nutritional levels (odd ratio (OR): 3.28, p = 0.002) and ST 5 h/day (OR: 5.34, p = 0.003). In conclusion, in the present study, EA schoolchildren reported lower HRQoL than NEA schoolchildren, which could be explained by the lifestyle patterns such as a low nutritional level and more ST exposure.