Acute Effects of Low-and High-Speed Resistance Exercise on Cognitive Function in Frail Older Nursing-Home Residents: A Randomized Crossover Study

Aim. The present study investigated the acute effects of low-and high-speed resistance exercise on the cognitive function of frail older women living in nursing home. Materials and Methods. Ten institutionalized frail older women were recruited. Rey Auditory Verbal Learning Test and Stroop test were performed before, immediately after, 1 h after, and 24 h after the end of the experimental session. Participants randomly performed low-and high-speed resistance exercise and a control session. Exercise sessions were composed of 4 resistance exercises with 4-8 sets of 4-10 repetitions at moderate intensity. Results. Results indicated that the performance of Rey Auditory Verbal Learning Test was similarly increased immediately after both low-and high-speed resistance exercises. However, only improvements elicited by low-speed resistance exercise remained significant 1 h after the end of the exercise session. No acute effects of resistance exercise were observed on Stroop performance. Conclusion. Our findings indicated that both low-and high-speed resistance exercises acutely increased episodic memory in frail older women, whereas no changes on Stroop were observed

Medium range interaction between neutral metal atoms and a metallic surface (Ta/W)

The anomalous presence of adatoms in the hidden part of a field ion microscope tip after a sideward deposition is interpreted by the existence of a medium range (10-30 A) van der Waals interaction between the tip and the incoming atoms. For the first time, the interaction constant has been measured between transition metals (Ta/W). The obtained value is 18 eV Å3.La présence anormale d'adatomes dans la partie cachée d'une pointe d'émission ionique de champ après un dépôt est interprétée par des interactions de van der Waals à moyenne distance (10-30 Å) entre la pointe et les atomes projetés. Pour la première fois, la constante d'interaction a été mesurée pour des métaux de transition (Ta/W). La valeur obtenue est 18 eV Å3

Chauffage à faible temps de montée d'une pointe d'émission de champ

We describe a device used for heating and measuring with DC current the temperature of a field emission tip being at several kV. The obtained rise time is 0.2 s, the stability and the precision of the measure are better than 0.1 K.Nous décrivons un dispositif destiné au chauffage et à la mesure en courant continu de la température d'une pointe d'émission de champ portée à une tension de quelques kV. Le temps de montée obtenu est de 0,2 s, la stabilité et la précision de la mesure sont meilleures que 0,1 K

Chauffage à faible temps de montée d'une pointe d'émission de champ

Nous décrivons un dispositif destiné au chauffage et à la mesure en courant continu de la température d'une pointe d'émission de champ portée à une tension de quelques kV. Le temps de montée obtenu est de 0,2 s, la stabilité et la précision de la mesure sont meilleures que 0,1 K

THE POLARISABILITY OF IRIDIUM NEUTRAL ATOMS AND THEIR VAN DER WAALS INTERACTION WITH A TUNGSTEN SURFACE MEASURED BY F.I.M

Nous décrivons la mesure, en microscopie ionique de champ, de la polarisabilité α d'adatomes neutres d'iridium et de leur constante d'interaction de Van der Waals C avec une surface de Tungstène. Les valeurs trouvées sont : α = 8 ± Å3 et C = 10 ± 3 eV Å3 .We describe the measurement, by Field Ion Microscopy, of the polarisability α of neutral Iridium atoms and of their Van der Waals interaction constant C with a Tungsten surface. The values obtained are α = 8 ± Å3 and C = 10 ± 3 eV Å3

Description of participants in the "Atout Age Mobility" prevention workshops at the University Hospital Center of La Réunion : a prospective study

Introduction As the population ages, loss of autonomy is becoming a priority public health issue. "Atout Age Mobility" prevention interventions for seniors aim to limit frailty, which is a predictive and reversible factor in the loss of autonomy and disability. Objectives The objective of this study is to describe the impact of these interventions on the physical performance and quality of life of a pilot sample of participants. Design We conducted a prospective study named 5P PILOT with 3 months of follow up. Settings Subjects were recruited by convenience sampling from participants in the "Atout Age Mobility" workshops at Saint Joseph from 04/09/2017 to 29/01/2019. Participants Retired people over 55 years old with no contraindications to physical activity recruited from participants in the "Atout Age Mobility" workshops in Saint Joseph. Intervention(s) (for clinical trials) or Exposure(s) (for observational studies): All participants completed 12 weeks of physical exercise called the "Atout Age Mobility" workshop, which lasted 60 minutes each week and was supervised by physical activity coaches. Main Outcome(s) and Measure(s) Physical performance was assessed by Short physical performance battery (SPPB), 10-m gait speed and grip strength measurement. Quality of life through the SF-36 test. Results Ninety-six patients were included and 55 (57.3%) completed the study. There was a significant improvement in gait speed (1.35 +/- 0.26m/s vs. 1.27 +/- 0.24m/s; p=0.008). There was no significant change in SF-36, grip strength dominant arm and SPPB at the 0.01 significance level. Conclusion The "Atout Ages Mobility" workshops seem to significantly improve gait speed but not other aspects of physical performance or quality of life