0000000000082679

AUTHOR

Marco V. Narici

showing 3 related works from this author

Strength and power changes of the human plantar flexors and knee extensors in response to resistance training in old age

2002

Aim: The aim of the present study was to assess and compare the improvements of muscle strength and power induced by a 16-week resistive programme in a population of 16 older men aged 65-81 years. Methods: Training was performed three times per week at an intensity of 80% of one repetition maximum (1RM) and consisted of both calf raise and leg press exercises. Before-, during- and after-training, maximum isometric and isokinetic torques, maximum power, 1RM, muscle cross-sectional area (CSA) and electromyographic activity (EMG) of the plantar flexors (PF) and knee extensors (KE) were examined. Results: For the KE and PF, respectively, training resulted in a 29.9 ± 4.4% (mean ± SE) and 21.6 ±…

medicine.medical_specialtyeducation.field_of_studyPhysiologyStrength trainingbusiness.industryPopulationIsometric exerciseCoactivationMuscle hypertrophyInternal medicineOne-repetition maximummedicineCardiologyPhysical therapyExercise physiologyLeg presseducationbusinessActa Physiologica Scandinavica
researchProduct

Plantarflexor Muscle-Tendon Properties are Associated With Mobility in Healthy Older Adults

2015

BACKGROUND: Muscle mass, strength, and power are known determinants of mobility in older adults but there is limited knowledge on the influence of muscle architecture or tendon properties on mobility. The purpose of this study was to examine the relationship between mobility and plantarflexor muscle-tendon properties in healthy older adults.METHODS: A total of 52 subjects (age 70-81 years) were measured for 6-minute walk test (6MWT), timed "up and go"-test (TUG), isometric plantarflexion strength, Achilles tendon stiffness, triceps surae muscle architecture, lower extremity lean mass, isometric leg extension strength, and leg extension power. Partial correlations and multivariate regression…

MaleAgingTendon stiffnesstendonmuscleIsometric exerciseWalkingPhysical performanceTendonsTriceps surae muscleMedicineta315Gait BiomechanicsAchilles tendonta3141SkeletalTendonmedicine.anatomical_structureMuscleFemalemedicine.medical_specialtyGastrocnemius muscleSkeletal/physiologycross-sectional studyMuscle architectureHumanshumanMuscle Strengthskeletal muscleMuscle SkeletalAgedbusiness.industrytendon stiffnessaged; aging; cross-sectional study; female; human; male; muscle strength; physiology; skeletal muscle; tendon; walking Aged; Aging; Cross-Sectional Studies; Female; Humans; Male; Muscle Strength; Muscle Skeletal; Tendons; Walking; Gait Biomechanics; Muscle; Muscle architecture; Physical performance; Tendon stiffnessphysical performancegait biomechanicsAging/physiologybody regionsMuscle Skeletal/physiologyCross-Sectional Studiesmuscle architecturephysiologyPhysical therapyLean body massFascicle lengthGeriatrics and GerontologybusinessMuscle architecturehuman activitiesTendons/physiologyJournals of Gerontology. Series A: Biological Sciences & Medical Sciences
researchProduct

Plantar flexor activation capacity and H reflex in older adults: adaptations to strength training.

2002

The purpose of this study was to investigate whether the voluntary neural drive and the excitability of the reflex arc could be modulated by training, even in old age. To this aim, the effects of a 16-wk strengthening program on plantar flexor voluntary activation (VA) and on the maximum Hoffman reflex (Hmax)-to-maximum M wave (Mmax) ratio were investigated in 14 elderly men (65–80 yr). After training, isometric maximum voluntary contraction (MVC) increased by 18% ( P < 0.05) and weight-lifting ability by 24% ( P < 0.001). Twitch contraction time decreased by 8% ( P < 0.01), but no changes in half relaxation time and in peak twitch torque were observed. The VA, assessed by twitch …

MaleVolitionAgingPhysiologydegenerationadaptationIsometric exerciseNerve conduction velocityhuman experimentH-ReflexTriceps surae muscleTwitch interpolationadaptation; aged; aging; article; controlled study; degeneration; excitability; exercise; Hoffmann reflex; human; human experiment; male; muscle contraction; muscle isometric contraction; muscle relaxation; muscle twitch; nerve conduction; normal human; plantaris muscle; priority journal; reflex arc; strength; torque; training; voluntary movement; Aging; Exercise; Triceps surae; Twitch interpolationAged 80 and overtrainingvoluntary movementReflex arcarticlereflex arcmusculoskeletal systemAdaptation Physiologicalmuscle twitchmedicine.anatomical_structuremuscle relaxationpriority journalCardiologyTriceps suraemedicine.symptomstrengthMuscle contractionMuscle Contractionmedicine.medical_specialtyWeight Liftingplantaris muscleStrength trainingPhysical exercisePhysical medicine and rehabilitationPhysiology (medical)Internal medicineexcitabilitymedicineHumanscontrolled studyhumannormal humanMuscle SkeletalExercisenerve conductionAgedmuscle isometric contractionbusiness.industrybody regionsHoffmann reflexTorqueH-reflexbusinessJournal of applied physiology (Bethesda, Md. : 1985)
researchProduct