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Dive into the research topics where Maria Martin Rodriguez is active.

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Featured researches published by Maria Martin Rodriguez.


Journal of Developmental Origins of Health and Disease | 2015

Characterization of early changes in fetoplacental hemodynamics in a diet-induced rabbit model of IUGR.

J. López-Tello; A. Barbero; A. Gonzalez-Bulnes; Susana Astiz; Maria Martin Rodriguez; Formoso-Rafferty N; M. Arias-Álvarez; Pilar Garcia Rebollar

Intrauterine growth restriction (IUGR) is associated with adverse perinatal outcomes and late-onset diseases in offspring. Eating disorders, voluntary caloric restriction and maternal undernutrition can all induce IUGR but a relevant model is required to measure all its possible consequences. In this work, pregnant rabbits were used as an IUGR model. Control females (n=4) received ad libitum diet throughout pregnancy, whereas underfed females (n=5) were restricted to 50% of their daily requirements. Offspring size was measured by ultrasonography and in vivo at birth. Hemodynamic features of the umbilical cords and middle cerebral arteries (systolic peak velocity, end diastolic velocity, pulsatility index and resistance index) were characterized by Doppler ultrasonography. At day 21, maternal underfeeding resulted in a significant reduction of fetal size (occipito-nasal length). At birth, the size of kits from the underfed group was significantly lower (lower crown-rump length, biparietal and transversal thoracic diameters) and a reduced weight with respect to the control group. Feed restriction altered blood flow perfusion compared with does fed ad libitum (significant higher systolic peak, time-averaged mean velocities and lower end diastolic velocity). Fetuses affected by IUGR presented with compensative brain-sparing effects when compared with the control group. In conclusion, the present study supports using rabbits and the underfeeding approach as a valuable model for IUGR studies. These results may help to characterize IUGR alterations due to nutrient restriction of mothers in future research.


Ageing & Society | 2010

Being physically active in old age: relationships with being active earlier in life, social status and agents of socialisation

Jesús Martínez del Castillo; José Emilio Jiménez-Beatty Navarro; José Luis Graupera Sanz; Maria Martin Rodriguez; Antonio Campos Izquierdo; David del Hierro Pinés

ABSTRACT Critical reviews of the literature on the factors that influence physical activity among older adults have argued that existing theoretical frameworks should be extended by integrating those that deal with the complex processes of socialisation and social learning. This paper explores some of the social processes that influence older peoples participation in physical activity (beyond that associated with everyday domestic tasks). A questionnaire with items on personal, social and environmental characteristics was completed by a random sample of older adults in the Madrid Autonomous Region (Spain). Significant relationships were found between the type of physical activity participation and: being physically active at earlier life stages, socio-economic status, the encouragement of others or social support in being active, and the knowledge and availability of local facilities. Some cases were observed of re-socialisation into physical activity among those who had been inactive earlier in life, and both appropriate environmental and supportive social conditions appeared instrumental. The findings could usefully inform the design of future social programmes to promote active lifestyles in later life, but given the complexity of the socialisation processes, it would be advisable for future studies to examine other than the four factors featured in the presented analysis, such as the role of cultural differences.


Animal | 2018

Improvements in the conception rate, milk composition and embryo quality of rabbit does after dietary enrichment with n-3 polyunsaturated fatty acids

Maria Martin Rodriguez; R.M. García-García; M. Arias-Álvarez; P. Millán; N. Febrel; N. Formoso-Rafferty; J. López-Tello; Pedro Lorenzo; P. G. Rebollar

This work attempts to confirm the effect of an enriched diet with n-3 polyunsaturated fatty acids (PUFA) trying to mitigate the reproductive performances issues such as low conception rate of primiparous rabbits. A total of 127 does were fed ad libitum throughout their two first cycles with two diets with different fat sources: mixed fat in the control and salmon oil in the enriched one, with 3.19 g/100 g (n=63 does) and 28.77 g/100 g (n=64 does) of n-3 of the total fatty acid, respectively. Feed intake was similar between groups (P>0.05). Plasma progesterone concentration was higher in the enriched females than in control ones at 7 (30.9±2.18 v. 23.9±2.30 ng/ml, respectively; P=0.029) and 14 (38.7±2.18 v. 28.2±2.30 ng/ml, respectively; P=0.001) days of first gestation. Considering both cycles, reproductive parameters of mothers (fertility, duration of gestation and prolificacy) and litter parameters (weight at parturition and weaning, mortality and average daily gain (ADG) of kits during lactation) were similar in both groups. However, individual measurements of neonates of enriched group improved 5.87%, 7.10% and 18.01% (P0.05), but embryo apoptosis rate was higher in control group than in enriched one (31.1±4.56% v. 17.1±3.87%, respectively; P<0.05). In conclusion, dietary PUFA enrichment from the rearing and throughout two productive cycles improved plasma progesterone during pregnancy, fertility, milk fatty acid profile and neonates development of primiparous supporting the beneficial effect of n-3 PUFA supplementation in rabbit does.


Reproduction, Fertility and Development | 2017

The effects of sildenafil citrate on feto–placental development and haemodynamics in a rabbit model of intrauterine growth restriction

J. López-Tello; M. Arias-Álvarez; Maria-Ángeles Jiménez-Martínez; Alicia Barbero-Fernández; R.M. García-García; Maria Martin Rodriguez; Pedro Lorenzo; Laura Torres-Rovira; Susana Astiz; A. Gonzalez-Bulnes; Pilar Garcia Rebollar

The present study evaluated the effectiveness of sildenafil citrate (SC) to improve placental and fetal growth in a diet-induced rabbit model of intrauterine growth restriction (IUGR). Pregnant rabbits were fed either ad libitum (Group C) or restricted to 50% of dietary requirements (Group R) or restricted and treated with SC (Group SC). The treatment with SC improved placental development by increasing vascularity and vessel hypertrophy in the decidua. The assessment of feto-placental haemodynamics showed higher resistance and pulsatility indices at the middle cerebral artery (MCA) in fetuses treated with SC when compared with Group R, which had increased systolic peak and time-averaged mean velocities at the MCA. Furthermore, fetuses in the SC group had significantly higher biparietal and thoracic diameters and longer crown-rump lengths than fetuses in Group R. Hence, the SC group had a reduced IUGR rate and a higher kit size at birth compared with Group R. In conclusion, SC may provide potential benefits in pregnancies with placental insufficiency and IUGR, partially counteracting the negative effects of food restriction on placental development and fetal growth. However, the present study also found evidence of a possible blood overflow in the brain that warrants further investigation.


Journal of Animal Science | 2017

Effects of dietary fish oil supplementation on performance, meat quality, and cecal fermentation of growing rabbits

Maria Martin Rodriguez; M.D. Carro; V. Valiente; N. Formoso-Rafferty; Pilar Garcia Rebollar

The objective of this study was to investigate the effect of dietary supplementation with fish oil on growth performance (during all fatening period), carcass characteristics and fatty acid (FA) profile of muscle and fat tissues (at slaughter), as well as cecal fermentation and ileal mucosa morphology of growing rabbits (at 30, 45, and 60 d of age). Two isonitrogenous and isoenergetic diets, only differing in their fat source, were formulated and provided each to 24 does (12 per diet) and their offspring during pregnancy and lactation. The control diet contained 4.59 g of n-3 per 100 g of total FA, and the enriched diet contained 14.9 g of n-3 per 100 g of total FA. From weaning (30 d of age) to slaughter (60 d), the litters (12 per diet; 8 kits each) continued fed the corresponding experimental diet. There were no differences ( > 0.05) between groups in ADFI, ADG and G:F ratio during the growing period. At slaughter, BW, full gastrointestinal tract weight, carcass yield, meat color and pH, drip loss percentage, content of scapular fat and tissue composition of the left hind leg were similar between groups ( > 0.05), but perirenal fat was lower ( = 0.020) and skin weight and abdominal fat tended to be lower ( = 0.055 and = 0.063, respectively) in enriched rabbits than in control ones. Total PUFA content in both LM and perirenal fat was greater ( = 0.021 and < 0.001, respectively) in enriched rabbits, that also showed lower n-6/n-3 ratios in LM (1.61 vs. 5.80; < 0.001) and perirenal fat (4.71 vs. 12.0; < 0.001) than those fed the control diet. Cecal concentrations of total VFA were greater ( < 0.001) in enriched than in control group at 30, 45 and 60 d of age, but diet did not affect ( ≥ 0.332) VFA profile, with the exception of a lower ( = 0.013) proportion of minor VFA (sum of isobutyrate, isovalerate, and valerate) in control group. Diet did not affect ( > 0.255) either pH and NH-N concentrations in the cecum or ileal morphology (crypt depth and villi length). The results showed that dietary fish oil supplementation enhanced beneficial long-chain n-3 FA and decreased n-6/n-3 ratio in rabbit meat and fat, being healthier for human consumption, without having negative effects on growth performance, cecal fermentation, and ileal morphology or carcass characteristics.


Canadian Journal on Aging-revue Canadienne Du Vieillissement | 2012

Associations among Physician Advice, Physical Activity, and Socio-demographic Groups in Older Spanish Adults

Maria Martin Rodriguez; Jesús Martínez del Castillo; José Antonio Serrano Sánchez; José Emilio Jiménez-Beatty Navarro; José Antonio Santacruz; Antonio Rivero Herráiz

Cette étude a examiné la relation entre l’avis médicale pour s’engager dans ld’activité physique avec, le type de demande d’activité physique et les variables démographiques. Une étude transversale a été élaborécréé. Un questionnaire avec des items sur l’avis médicale, le niveau de demande pour l’activité physique, et les variables démographiques a été complété par une échantillon national de personnes âgées en Espagne (N = 933, M = 74,1, range de 65 à 93), sélectionnées de manière aléatoire à plusieurs étapes. Les personnes âgées actifs actives physiquement ont plus souvent reçu des avis médicale médicaux à la pratiquepour s’engager dans ld’activité physique que les personnes non activefs. Il existe une relation significative entre l’avis médicale et le type de demande (p <.01) et l’âge (p <.05). Cependant, aucune relation n’a été trouvée déterminée entre l’avis médicale d’activité physique et le sexe, la classe sociale, ou le revenu. Les médécins peuvent effectivement favoriserencourager l’activité physique chez les adultes âgés sédentaires par des conseils d’activité physiqueavec un résultat efficace. Donc, les autorités sanitaires devraient promouvoir encourager aux médécins de conseiller à leurs patients plus âgés de s’engager dans l’activité physiqueles conseils médicaux de l’activité physique à leurs patients âgés. This study examined the relationship between medical advice to engage in physical activity with type of demand required by physical activity and demographic variables. A cross-sectional study was developed, featuring a questionnaire on physicians’ advice, and type of demand. The questionnaire was completed by a probability and nationwide sample of older adults in Spain (n = 933, M = 74.1, range 65–93), randomly selected using multistage sampling. More physically active older adults have, more often than the less active, received physicians’ advice to engage in physical activity. There is a significant relationship between medical advice and type of demand (p < .01) and age (p < .05). However, no relationship was found between physician medical advice and gender, social class, or income. Physicians can effectively promote physical activity among sedentary older adults through appropriate advice. Consequently, health authorities should promote physicians’ advising older patients to pursue physical activity.


Journal of Aging and Physical Activity | 2007

Motivational Factors and Physician Advice for Physical Activity in Older Urban Adults

José Emilio Jiménez-Beatty Navarro; José Luis Graupera Sanz; Jesús Martínez del Castillo; Antonio Campos Izquierdo; Maria Martin Rodriguez


Ricyde. Revista Internacional De Ciencias Del Deporte | 2009

Los hábitos de actividad física de las mujeres mayores en España

Jesús Martínez del Castillo; María Dolores González Rivera; José Emilio Jiménez-Beatty Navarro; José Luis Graupera Sanz; Maria Martin Rodriguez; Antonio Campos Izquierdo; David del Hierro Pinés


Ricyde. Revista Internacional De Ciencias Del Deporte | 2007

Calidad de vida y estrés laboral: la incidencia del Burnout en el deporte de alto rendimiento madrileño

Maria Martin Rodriguez; Antonio Campos Izquierdo; José Emilio Jiménez-Beatty; Jesús Martínez del Castillo


Revista de Psicología del Deporte, ISSN 1132-239X, 2011-01, Vol. 20, No. 1 | 2011

Demanda y percepción del monitor de las personas mayores en la actividad física y deporte en España

Antonio Campos Izquierdo; José Emilio Jiménez-Beatty; María Dolores González Rivera; Maria Martin Rodriguez; David del Hierro Pinés

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David del Hierro Pinés

Technical University of Madrid

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Antonio Rivero Herráiz

Technical University of Madrid

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