Biopsy samples were taken from the vastus lateralis of 18- to 84-yr-old male sprinters (n = 91). Fiber-type distribution, cross-sectional area, and myosin heavy chain (MHC) isoform content identified using ATPase histochemistry SDS-PAGE. Specific tension maximum shortening velocity (V(o)) determined in 144 single skinned fibers younger (18-33 yr, n 8) older (53-77 9) runners. Force-time characteristics knee extensors by isometric contraction. The area type I was unchanged with age, whereas...

Purpose: Aging diminishes the ability to run fast, but specific mechanisms responsible for this deterioration remain largely unknown. In present study, we investigated age-related decline in sprint running through a cross-sectional examination of biomechanical and skeletal muscle characteristics 77 competitive male sprinters aged 17-82 yr. Methods: Ground reaction force (GRF) kinematic stride cycle parameters were measured during maximum-velocity phase using 9.4-m-long platform. Knee...

Ageing leads to a progressive decline in human locomotor performance. However, it is not known whether this results from reduced joint moment and power generation of all lower limb muscle groups or just some them. To further our understanding age-related decline, we compare the amounts moments powers generated by muscles during walking (self-selected), running (4 m s(-1)) sprinting (maximal speed) among young, middle-aged old adults. We find that deficit ankle plantarflexor becomes more...

Previous studies have shown that aging is associated with alterations in muscle architecture and tendon properties (Morse CI, Thom JM, Birch KM, Narici MV. Acta Physiol Scand 183: 291-298, 2005; MV, Maganaris CN, Reeves ND, Capodaglio P. J Appl 95: 2229-2234, 2003; Stenroth L, Peltonen J, Cronin NJ, Sipila S, Finni T. 113: 1537-1544, 2012). However, the possible influence of different types regular exercise loading on older adults poorly understood. To address this, triceps surae...

Introduction The knee and ankle extensors as human primary antigravity muscle groups are of utmost importance in a wide range locomotor activities. Yet, we know surprisingly little about how these work, specifically, close to their maximal capacities they function across different modes intensity locomotion. Therefore, advance our understanding constraints, determined compared relative operating efforts the during walking, running, sprinting. Methods Using an inverse dynamics biomechanical...

ABSTRACT Background Both longitudinal and cross‐sectional studies have demonstrated that muscle mass, strength power are lost with ageing. Although shown changes in morphology function sedentary, healthy active endurance‐trained older people, less is known about such age‐related sprint athletes. It has been proposed people may provide a better study of ageing not confounded by factors inactivity other unhealthy behaviours. Given the training regimens masters sprinters consist elicit gains...

KORHONEN, M. T., A. MERO, and H. SUOMINEN. Age-Related Differences in 100-m Sprint Performance Male Female Master Runners. Med. Sci. Sports Exerc., Vol. 35, No. 8, pp. 1419–1428, 2003. Purpose This study was undertaken to investigate age-related differences the velocity selected stride parameters male female master sprinters determine which characteristics were related overall decline performance of 100 m with age. Methods The performances 70 finalists (males 40–88 yr, females 35–87 yr) at...

No AccessJournal of Urology1 Oct 1989Terodiline: A Dose Titrated, Multicenter Study the Treatment Idiopathic Detrusor Instability in Women A. Tapp, M. Fall, J. Norgaard, Massey, R. Choa, T. Carr, Korhonen, and Paul Abrams TappA. Tapp , FallM. Fall NorgaardJ. Norgaard MasseyA. Massey ChoaR. Choa CarrT. Carr KorhonenM. Korhonen AbramsPaul View All Author Informationhttps://doi.org/10.1016/S0022-5347(17)38977-2AboutPDF ToolsAdd to favoritesDownload CitationsTrack CitationsPermissionsReprints...

The aim of this study was to measure the number motor units and muscle mass in power-trained endurance-trained master athletes compared with community-dwelling older adults.Seventy-five (52 power- 23 athletes) were recruited at 2012 European Veteran Athletics Championships Zittau (Germany). One hundred forty-nine adults served as controls. In all participants, unit index (MUNIX) hypothenar whole body determined by bioelectrical impedance analysis (BIA).In both male female athletes, there...

Purpose This study was undertaken to examine bone properties in masters sprinters of different ages and younger reference subjects. In addition, the association sport-specific ground reaction force, muscle, training, hormone characteristics with parameters evaluated athletes. Methods Bone densitometric, structural, strength were assessed by peripheral quantitative computed tomography at distal midtibia 83 male (40–85 yr) 19 physically active referents (31–45 yr). Between-group differences...

Lower physical activity levels in old age are thought to contribute the age‐related decline peak aerobic and anaerobic power. Master athletes maintain high of with advancing endurance or power training may influence extent which these functions age. To investigate, 37‐90‐year‐old (n = 20, 45% female) 19, 58% master were recruited. Maximal was assessed when cycling two‐legged (VO 2 Peak 2‐leg ) one‐legged 1‐leg ), while jumping (anaerobic) by a countermovement jump. Men women had similar VO...

Studies have shown a positive influence of intense athletic training on several biomarkers aging, but it remains unclear whether this is dependent exercise-training-mode. This study compared redox balance, cytokine levels and aging between master sprinters endurance athletes, as well in young middle-aged individuals controls.Participants were male (SA, 50 ± 8.9yrs; n = 13) runners (EA, 53 8.2yrs; 18) with remarkable experience (~25yrs practice), besides untrained (YC, 22.7 3.9yrs; 17)...

Abstract Background Previous research suggests that an ageing‐associated remodelling and loss of motor units due to neuron death contributes significantly muscle weakness in old age. In histological sections, unit is reflected by increased fibre type grouping. While regular exercise may not attenuate the during ageing, it has been suggested facilitate reinnervation resulting larger units, a higher number groups sections muscles from aged individuals. Methods 10‐year follow‐up study, we...

This study aims at examining the effects of progressive strength and sprint training on regulation muscle contraction whole-muscle single-fibre levels in older sprint-trained athletes.Eleven men (52-78 years) were randomized to a (EX, n = 7) or control (CTRL, 4) group. EX participated 20-week programme that combined with heavy explosive exercises, while CTRL maintained their usual run-based schedules.EX improved maximal isometric dynamic leg strength, jump performance force production...

Eighteen young (23 ± 4 yr) and 25 older (70 male sprinters were examined for ground reaction force (GRF) temporal-spatial variables. The data collected during maximum-speed phase, variability symmetry indices calculated from a total of 8 steps. There was little variation (CV < 6%) in vertical resultant GRF kinematic variables, while impact loading had high (CV: 10–21%). Overall, the pattern similar both groups. Yet, small but significant age-related increase CV evident horizontal GRFs....

The aging‐related loss of muscle mass is thought to be partly attributable motor neuron and unit remodeling that result in fiber type grouping. We examined grouping 19‐ 85‐year‐old athletes non‐athletes evaluated which extent any observed explained by the composition muscle. Since regular physical activity may stimulate reinnervation, we hypothesized groups are larger master than age‐matched non‐athletes. Fiber was assessed m. vastus lateralis biopsies from 22 young (19‐27 years) 35 healthy...

The effect of age and sex on anaerobic glycolytic capacity in master athletes is currently unclear. To study this issue, we determined blood lactate concentrations after competitive sprint running male female different age. Eighty-one men (40-88 yrs) 75 women (35-87 participating the events (100-m, 200-m, 400-m) European Veterans Athletics Championships were studied. Blood samples taken from fingertip analysed for peak concentration ([La] b peak). [La] following 100-m to 400-m races showed a...