Search Results (3)

Jumping mechanography provides robust motor function indicators among children. The study aim was to develop centiles for the single 2-leg jump (S2LJ) in German children and adolescents and to identify differences in children with obesity. Data were collected in 2004–2021 through the German DOrtmund Nutritional and Anthropometric Longitudinally Designed (DONALD) study. All participants (6–18 years, mean age 11.4) performed annually an S2LJ aiming for maximum height on a Ground Reaction Force Platform. LMS (lambda-mu-sigma), including resampling, was used to develop centiles for velocity (v_max), jump height (h_max), relative force (F_max/BW), relative power (P_max/mass), impulse asymmetry and a new parameter to describe jump efficiency, the Nerve–Muscle Index (NMI), defined as v_max/(F_max/BW). Data from 882 children and adolescents were analyzed (3062 measurements, median 3 per individual). In females, F_max/BW values were higher in younger age but remained constant in adolescence. v_max, h_max and P_max/mass increased in childhood, reaching a plateau in adolescence. In males, v_max, h_max and P_max/mass showed a constant increase and the F_max/BW remained lower. Children with obesity showed lower F_max/BW, h_max, v_max and the NMI, hence, lower velocity per relative force unit and less efficient jump. The centiles should be used to monitor motor development in childhood. The NMI is a surrogate for motor efficiency. Full article

Background: Inflammaging is considered to drive loss of muscle function. Omega-3 fatty acids exhibit anti-inflammatory properties. Therefore, we examined the effects of eight weeks of vibration and home-based resistance exercise combined with a whey-enriched, omega-3-supplemented diet on muscle power, inflammation and muscle biomarkers in community-dwelling old adults. Methods: Participants were randomized to either exercise (3x/week, n = 20), exercise + high-protein diet (1.2–1.5 g/kg, n = 20), or exercise + high-protein and omega-3-enriched diet (2.2 g/day, n = 21). Muscle power (watt/m²) and chair rise test (CRT) time (s) were assessed via CRT measured with mechanography. Furthermore, leg strength (kg/m²) and fasting concentrations of inflammatory (interleukin (IL-) 6, IL-10, high-mobility group box-1 (HMGB-1)) and muscle biomarkers (insulin-like growth factor (IGF-) 1, IGF-binding protein-3, myostatin) were assessed. Results: Sixty-one participants (70.6 ± 4.7 years; 47% men) completed the study. According to generalized linear mixed models, a high-protein diet improved leg strength and CRT time. Only IGF-1 increased with additional omega-3. Sex-specific analyses revealed that muscle power, IL-6, IL-6/IL-10 ratio, and HMGB-1 improved significantly in the male high-protein, omega-3-enriched group only. Conclusion: Vibration and home-based resistance exercise combined with a high-protein, omega-3-enriched diet increased muscle power and reduced inflammation in old men, but not in old women. While muscle biomarkers remained unchanged, a high-protein diet combined with exercise improved leg strength and CRT time. Full article

Background and Objective. The aim of this study was to analyze whether the addition of physiotherapy to testosterone replacement therapy provides added benefit in improving functional capacity of the motor system in men with hypogonadism.
Material and Methods. The study involved 3 groups of subjects: group 1, healthy men (n=20); group 2, men with hypogonadism who underwent testosterone replacement therapy with physiotherapy (TRT+PT) (n=8); and group 3, men with hypogonadism who underwent testosterone replacement therapy alone (TRT) (n=10). Physical activity (International Physical Activity Questionnaire [IPAQ]) and body composition (X-SCAN analysis) were analyzed; the vertical jump test (Leonardo Mechanography®) was applied.
Results. The application of testosterone replacement therapy together with physiotherapy for 6 months significantly increased the maximum and relative power of jump in the subjects in the TRT+PT group; however, in the TRT group, no statistically significant difference was observed. The maximum jump height for the subjects in the TRT+PT group significantly increased 6 months after the intervention; however, in the TRT group, this index remained unaltered. The lean body mass of the subjects in the TRT+PT group increased (P<0.05); however, in the TRT group, it did not change. The relative fat body mass in the TRT+PT group decreased significantly (P<0.05), but, in the TRT group, it had a tendency to increase, though insignifi cantly.
Conclusions. Our results suggest that the application of testosterone replacement therapy together with physiotherapy (1 hour twice weekly) in men with hypogonadism may lead to earlier and better results in comparison with testosterone replacement therapy applied alone. Full article