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Titolo:
Neuromuscular properties and fatigue in older men following acute creatinesupplementation
Autore:
Jakobi, JM; Rice, CL; Curtin, SV; Marsh, GD;
Indirizzi:
Univ Western Ontario, St Josephs Hlth Ctr Annex,Sch Kinesiol, Canadian CtrAct & Aging,Dept Anat & Cell Biol, Fac Hlth Sci, London, ON N6G 2M3, CanadaUniv Western Ontario London ON Canada N6G 2M3 London, ON N6G 2M3, Canada Univ Western Ontario, St Josephs Hlth Ctr Annex,Sch Kinesiol, Canadian CtrAct & Aging,Dept Anat & Cell Biol, Fac Med, London, ON N6G 2M3, Canada UnivWestern Ontario London ON Canada N6G 2M3 London, ON N6G 2M3, Canada Univ Western Ontario, St Josephs Hlth Ctr Annex,Sch Kinesiol, Canadian CtrAct & Aging,Dept Anat & Cell Biol, Fac Dent, London, ON N6G 2M3, Canada Univ Western Ontario London ON Canada N6G 2M3 London, ON N6G 2M3, Canada Univ Western Ontario, Fac Hlth Sci, Sch Kinesiol, Canadian Ctr Act & Aging, London, ON N6G 2M3, Canada Univ Western Ontario London ON Canada N6G 2M3 London, ON N6G 2M3, Canada Univ Western Ontario, Lawson Res Inst, Sch Kinesiol,Div Imaging, Fac Hlth Sci, London, ON N6A 3K7, Canada Univ Western Ontario London ON Canada N6A 3K7 London, ON N6A 3K7, Canada Univ Western Ontario, Lawson Res Inst, Sch Kinesiol,Div Imaging, Fac Med, London, ON N6A 3K7, Canada Univ Western Ontario London ON Canada N6A 3K7 London, ON N6A 3K7, Canada Univ Western Ontario, Lawson Res Inst, Sch Kinesiol,Div Imaging, Fac Dent,London, ON N6A 3K7, Canada Univ Western Ontario London ON Canada N6A 3K7 ,London, ON N6A 3K7, Canada
Titolo Testata:
EUROPEAN JOURNAL OF APPLIED PHYSIOLOGY
fascicolo: 4, volume: 84, anno: 2001,
pagine: 321 - 328
SICI:
1439-6319(200104)84:4<321:NPAFIO>2.0.ZU;2-K
Fonte:
ISI
Lingua:
ENG
Soggetto:
HUMAN SKELETAL-MUSCLE; CONTRACTILE PROPERTIES; ELECTRICAL-STIMULATION; VOLUNTARY CONTRACTIONS; SARCOPLASMIC-RETICULUM; MONOHYDRATE INGESTION; EXERCISE; RAT; FREQUENCY; STRENGTH;
Keywords:
strength; aging; electromyogram; elbow flexor muscles;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Citazioni:
35
Recensione:
Indirizzi per estratti:
Indirizzo: Rice, CL Univ Western Ontario, St Josephs Hlth Ctr Annex,Sch Kinesiol, Canadian CtrAct & Aging,Dept Anat & Cell Biol, Fac Hlth Sci, 1490 Richmond St,London,ON N6G 2M3, Canada Univ Western Ontario 1490 Richmond St London ON Canada N6G 2M3 da
Citazione:
J.M. Jakobi et al., "Neuromuscular properties and fatigue in older men following acute creatinesupplementation", EUR J A PHY, 84(4), 2001, pp. 321-328

Abstract

The purpose of this study was to investigate the effects of creatine (Cr) supplementation in 12 older (65-82 years) men. The subjects were randomly assigned to a Cr or a placebo (P) group. Seven men were supplemented with 5 g of Cr and 5 g maltodextrin four times a day for 5 days (Cr), and 5 men consumed 5 g of maltodextrin four times a day for 5 days (P). Following this treatment body mass increased significantly in the Cr group (1 kg), but didnot change in the P group, and measurements of arm anthropometry were not affected in either group. Prior to and following supplementation maximal isometric voluntary force (MVC), muscle activation, contractile properties and surface electromyography (EMG) were measured in the elbow flexor muscles at baseline, during a fatiguing task and over 10 min of recovery. The fatigue protocol involved both voluntary and contractile stimulated. Stimulated contractile properties, MVC, and muscle activation were not affected by Cr supplementation. Furthermore, there were no changes in time to fatigue, decline in MVC force, muscle activation, EMG or contractile properties during the fatigue protocol. The rates of recovery of voluntary force, and stimulated contractile force did not change following Cr supplementation. These results indicate that short-term Cr supplementation in older men does not influence isometric performance of the elbow flexor muscles.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 08/04/20 alle ore 11:03:52