Exploring the Interactions between Obesity and Diabetes: Implications for Understanding Metabolic Dysregulation in a Saudi Arabian Adult Population.

The rising prevalence of obesity in Saudi Arabia is a major contributor to the nation's high levels of cardiometabolic diseases such as type 2 diabetes. To assess the impact of obesity on the diabetic metabolic phenotype presented in young Saudi Arabian adults, participants (n = 289, aged 18-40 years) were recruited and stratified into four groups: healthy weight (BMI 18.5-24.99 kg/m2) with (n = 57) and without diabetes (n = 58) or overweight/obese (BMI > 24.99 kg/m2) with (n = 102) and without diabetes (n = 72). Distinct plasma metabolic phenotypes associated with high BMI and diabetes were identified using nuclear magnetic resonance spectroscopy and ultraperformance liquid chromatography mass spectrometry. Increased plasma glucose and dysregulated lipoproteins were characteristics of obesity in individuals with and without diabetes, but the obesity-associated lipoprotein phenotype was partially masked in individuals with diabetes. Although there was little difference between diabetics and nondiabetics in the global plasma LDL cholesterol and phospholipid concentration, the distribution of lipoprotein particles was altered in diabetics with a shift toward denser and more atherogenic LDL5 and LDL6 particles, which was amplified in the presence of obesity. Further investigation is warranted in larger Middle Eastern populations to explore the dysregulation of metabolism driven by interactions between obesity and diabetes in young adults.

The impact of antenatal Bisphenol A exposure on male reproductive function at 20-22 years of age.

Bisphenol A (BPA) is a ubiquitous chemical suspected to possess oestrogenic hormonal activities. Male population studies suggest a negative impact on testicular function. As Sertoli cell proliferation occurs during fetal or early postnatal life, it is speculated that oestrogenic environmental exposures may influence mature testicular function. Among 705 Western Australian Pregnancy Cohort (Raine) Study men aged 20-22 years, 404 underwent testicular ultrasound examination (149 had maternal serum available), and/or 365 provided semen (136 had maternal serum) and/or 609 serum samples for sex steroids, gonadotrophins and inhibin B analysis (244 had maternal serum). Maternal serum collected at 18 and 34 weeks' gestation was pooled and assayed for concentrations of total BPA (free plus conjugated) as an estimate of antenatal exposure. Testicular volume was calculated by ultrasonography, and semen analysis performed. Serum LH, FSH and inhibin B were measured by immunoassay; testosterone, oestradiol, oestrone andBPA were measured by liquid chromatography-mass spectrometry. BPA levels were detectable in most (89%) maternal serum samples. After adjustment for maternal smoking, abstinence and varicocele, sperm concentration and motility were significantly correlated to maternal serum BPA (r = 0.18; P = 0.04 for both). No other associations of maternal serum BPA with testicular function were observed.

Outcomes in preterm small versus appropriate for gestation infants after Bifidobacterium breve M-16 V supplementation.

Introduction: Fecal bifidobacteria response after Bifidobacterium breve M-16 V supplementation was comparable in preterm small (SGA) versus appropriate for gestational age (AGA) infants.Objectives: To compare clinical outcomes between preterm SGA versus AGA infants after routine probiotic supplementation (RPS) with Bifidobacterium breve M-16V (3 × 109 CFU/day).Design: Retrospective cohort study (June 2012-August 2015) comparing outcomes between preterm (<34 weeks, subgroup: <29 weeks) SGA versus AGA infants after RPS with B. breve M-16 V using multivariable regression analysis. Primary outcome: necrotizing enterocolitis (NEC)≥Stage II/all-cause mortality. Secondary outcomes: NEC ≥ Stage II, all-cause mortality, late onset sepsis (LOS), postnatal age at full feeds (PAFF).Results: Outcomes in inborn 1380/1481 (162 SGA versus 1218 AGA) admissions were analyzed. Primary outcome "NEC ≥ Stage II /all-cause mortality" was higher in SGA versus AGA infants <29 weeks (21 versus 12%; p = .040), and showed trend toward reduction (8 versus 6%; p = .057) in AGA <34 weeks. NEC ≥ Stage II, LOS, and all-cause mortality was comparable in SGA versus AGA infants <34 weeks (3 versus 2, 9 versus 8, 9% versus 6%) and <29 weeks (5 versus 4, 16 versus 9, 18% versus 19%), respectively. Median (IQR) PAFF was significantly higher in SGA versus AGA infants <34 weeks (8 (6-12) versus 7 (5-10) days), and <29 weeks (14 (12-17) versus 11 (8-16) days).Conclusions: NEC, LOS and all-cause mortality rates were similar in preterm SGA versus AGA infants after RPS with Bifidobacterium breve M-16 V, but PAFF was higher in SGA infants.

The Impact of Distinct Exercise Training Modalities on Echocardiographic Measurements in Patients with Heart Failure with Reduced Ejection Fraction.

BACKGROUND: Exercise training is an important component of multidisciplinary heart failure management. However, the effects of aerobic training (AT) versus resistance training (RT) on cardiac function in patients with heart failure with reduced ejection fraction are not well defined. The aim of this study was to evaluate the impact of these exercise modalities on echocardiographic parameters. METHODS: Participants with stable heart failure with reduced ejection fraction (ejection fraction < 50%) were randomized to 12 weeks of AT, RT, or untrained control. Exercise was performed at matched relative intensities of each training modality (50%-70% of maximum). Echocardiography and cardiopulmonary exercise testing were performed at baseline and after 12 weeks of training. RESULTS: Thirty-eight participants were randomized, and 12 in each group completed the intervention (mean age, 61.5 ± 1.7 years; 89% men). Peak oxygen consumption increased from 14.5 ± 1.3 to 17.2 ± 1.6 ml · min-1 · kg-1 after AT and from 13.7 ± 1.2 to 16.4 ± 1.1 ml · min-1 · kg-1 after RT (P < .001 for both). In the AT group, there was a decrease in septal e' (from 0.052 ± 0.004 to 0.041 ± 0.004 m/sec) and increases in E/e' ratio (from 18.2 ± 3.1 to 23.8 ± 3.5), left atrial volume (from 86 ± 9 to 99 ± 10 mL), and right ventricular end-diastolic area (from 18 ± 1 to 20 ± 1 cm2; P < .05 for all), but these were unchanged in the control and RT groups. There were no significant changes in left ventricular diameters or volumes or right ventricular fractional area change after exercise. CONCLUSIONS: There is a differential effect of AT versus RT on some echocardiographic parameters in patients with heart failure with reduced ejection fraction. AT was associated with evidence of worsening myocardial diastolic function, whereas this was not apparent after RT. Further studies are indicated to investigate the long-term clinical significance of these adaptations.

Reliability and Validity of the Four-Point Pusher Score: An Assessment Tool for Measuring Lateropulsion and Pusher Behaviour in Adults after Stroke.

Purpose: The authors determined the reliability and validity of the Four-Point Pusher Score (4PPS) among stroke survivors. Method: Stroke survivors were invited to participate within 48 hours of admission to a stroke rehabilitation unit in a tertiary hospital. Intrarater reliability was determined by examining scores assigned to the same patient by the same physiotherapist. Interrater reliability was determined by examining scores assigned to the same patient by two other physiotherapists. Validity was determined by examining associations with the Burke Lateropulsion Scale (BLS), Scale for Contraversive Pushing (SCP), and functional scales. Results: A total of 85 participants who were a median of 13 (interquartile range 9-21) days post-stroke completed this study. The weighted κ statistic for 4PPS intra- and interrater reliability was 0.97 (p < 0.001). Scores on the 4PPS were very strongly associated with scores on the BLS (r s = 0.95) and the SCP (r s = 0.86). Strong associations were evident between the 4PPS and the Berg Balance Scale (r s = -0.77), Chedoke-McMaster Stroke Assessment postural control scale (r s = -0.76), and FIM Motor sub-scale (r s = -0.64; all ps < 0.001). Conclusion: The 4PPS is a reliable and valid scale to assess lateropulsion and pusher behaviour in stroke survivors in an in-patient rehabilitation setting.

Objectif : déterminer la fiabilité et la validité du score du pousseur en quatre points (SP4P) chez les survivants d'un accident vasculaire cérébral (AVC). Méthodologie : des survivants d'un AVC hospitalisés dans l'unité d'un hôpital de soins tertiaires depuis moins de 48 heures ont été invités à participer à une réadaptation après un AVC. Les chercheurs ont déterminé la fiabilité intraévaluateur en examinant les scores attribués par un même physiothérapeute au même patient, et la fiabilité interévaluateur en examinant les scores attribués par deux autres physiothérapeutes au même patient. Ils ont établi la validité en examinant les associations avec l'échelle de latéropulsion de Burke (ÉLB), l'échelle de poussée contralésionnelle (ÉPC) et les échelles fonctionnelles. Résultats : au total, 85 participants qui avaient subi leur AVC une médiane de 13 jours auparavant (plage interquartile de 9 à 21 jours) ont terminé l'étude. Le test de concordance pondéré de kappa pour déterminer la fiabilité intraévaluateur et interévaluateur des SP4P s'élevait à 0,97 (p < 0,001). Les SP4P s'associaient très fortement à ceux de l'ÉLB (r s = 0,95) et de l'ÉPC (r s = 0,86). Des associations solides étaient évidentes entre les SP4P et l'échelle d'évaluation de l'équilibre de Berg (r s = ­0,77), l'échelle de contrôle postural de Chedoke-McMaster (r s = ­0,76) et le sous-score moteur de mesure de l'autonomie fonctionnelle (r s = ­0,64; p < 0,001 dans tous les cas). Conclusion : le SP4P est fiable et valide pour évaluer le comportement de la latéropulsion et du pousseur des survivants d'un AVC dans un contexte de réadaptation hospitalière.

Confidence and Attitudes Toward Osteoarthritis Care Among the Current and Emerging Health Workforce: A Multinational Interprofessional Study.

OBJECTIVE: To measure confidence and attitudes of the current and emerging interprofessional workforce concerning osteoarthritis (OA) care. METHODS: Study design is a multinational (Australia, New Zealand, Canada) cross-sectional survey of clinicians (general practitioners [GPs], GP registrars, primary care nurses, and physiotherapists) and final-year medical and physiotherapy students. GPs and GP registrars were only sampled in Australia/New Zealand and Australia, respectively. The study outcomes are as follows: confidence in OA knowledge and skills (customized instrument), biomedical attitudes to care (Pain Attitudes Beliefs Scale [PABS]), attitudes toward high- and low-value care (customized items), attitudes toward exercise/physical activity (free-text responses). RESULTS: A total of 1886 clinicians and 1161 students responded. Although a number of interprofessional differences were identified, confidence in OA knowledge and skills was consistently greatest among physiotherapists and lowest among nurses (eg, the mean difference [95% confidence interval (CI)] for physiotherapist-nurse analyses were 9.3 [7.7-10.9] for knowledge [scale: 11-55] and 14.6 [12.3-17.0] for skills [scale: 16-80]). Similarly, biomedical attitudes were stronger in nurses compared with physiotherapists (6.9 [5.3-8.4]; scale 10-60) and in medical students compared with physiotherapy students (2.0 [1.3-2.7]). Some clinicians and students agreed that people with OA will ultimately require total joint replacement (7%-19% and 19%-22%, respectively), that arthroscopy is an appropriate intervention for knee OA (18%-36% and 35%-44%), and that magnetic resonance imaging is informative for diagnosis and clinical management of hip/knee OA (8%-61% and 21%-52%). Most agreed (90%-98% and 92%-97%) that exercise is indicated and strongly supported by qualitative data. CONCLUSION: Workforce capacity building that de-emphasizes biomedical management and promotes high-value first-line care options is needed. Knowledge and skills among physiotherapists support leadership roles in OA care for this discipline.

Predicting 1 Repetition Maximum Using Handheld Dynamometry.

BACKGROUND: Isometric assessment of muscular function using a handheld dynamometer (HHD) is frequently used in clinic environments. However, there is controversy in terms of the validity of isometric assessment to monitor changes in dynamic performance. One repetition maximum (1RM) is considered the gold standard for evaluating dynamic strength, though clinicians do not often use 1RM testing, preferring to be cautious with clients who have preexisting impairments. If strength testing using an HHD could be used to predict 1RM, this may have significant implications for the use of isometric testing to prescribe exercise in clinical environments. OBJECTIVE: To establish the relationship and agreement between 1RM and isometric strength scores measured using HHD for the biceps and quadriceps muscle groups and to determine if HHD measurements can be used to predict 1RM. DESIGN: Criterion standard comparison. SETTING: Tertiary institution gymnasium. PARTICIPANTS: Convenience sample of 50 healthy adults (26 women) aged 19-33 years (mean 23.38 ± 3.11 years). METHODS: Muscle strength of the biceps and quadriceps muscle groups measured by 1RM and isometric maximal voluntary contraction measured using an HHD. MAIN OUTCOME MEASURES: Statistical analysis of the relation between the measures of strength was established using Pearson correlation and a Bland-Altman plot. A linear regression analysis with included covariates (gender, age, resistance training history, and body mass index) was used to derive the prediction equations. RESULTS: A significant correlation was found between 1RM and HHD scores for the biceps (r = .83, P < .001) and quadriceps muscle groups (r = .82, P < .001). However, strength scores were not in agreement. Linear regression analysis found significance in predicting 1RM from all HHD scores (P < .001). Gender as a covariate significantly influenced the prediction of 1RM for the biceps (P = .005) and quadriceps (P = .003) muscle groups. CONCLUSIONS: There is a significant relationship between 1RM and HHD measures of strength, and measures taken using an HHD can be used to predict 1RM in the biceps and quadriceps muscle groups. The use of an HHD may therefore provide a more accessible alternative to 1RM for muscle strength assessments. Further research is warranted to determine if results are applicable in clinical populations. LEVEL OF EVIDENCE: NA.