caa a22 4500 467941262 CHVBK 20180406153013.0 cr unu---uuuuu 170328e20060301xx s 000 0 eng 10.1007/s00421-005-0126-0 doi (NATIONALLICENCE)springer-10.1007/s00421-005-0126-0 Recovery of hand grip strength and hand steadiness after exhausting manual stretcher carriage [Elektronische Daten] [D. Leyk, U. Rohde, O. Erley, W. Gorges, M. Wunderlich, T. Rüther, D. Essfeld] Rescue activities frequently require not only substantial and sustained hand-grip forces but also a subtle coordination of hand and finger muscles, e.g. when manipulating injection syringes after manual stretcher carriage. We investigated the recovery kinetics of manual coordination and muscle strength after exhausting stretcher carriage (4.5km/h, load at each handle bar: 25kg). Hand steadiness (frequency and duration of wall contacts when holding a metal pin into a small bore) and parameters of hand-grip strength were determined in 15 male volunteers before and immediately after the stretcher carriage. Measurements were repeated after 0.5, 1, 4 and 24h of recovery. Mean carrying time was 215±87s (SD), mean transport distance amounted to 264±104m. During the carriage test, forces at the stretcher handles oscillated in the order of ±50N within each gait cycle. Immediately after exhaustion, hand steadiness was significantly deteriorated (threefold increase in frequency and duration of wall contacts), maximum and mean hand-grip force over 15s were reduced by almost 20%. While the recovery of hand steadiness was complete by minute 30 after stretcher carriage, a significant reduction in maximum and mean hand-grip force by 12% could still be observed after 24h. The present findings demonstrate that hand steadiness recovers much faster than maximum hand-grip strength after exhaustive manual stretcher carriage (less than 30min vs. more than 24h). Probably, muscle damage induced in particular by the eccentric components during stretcher transport seems to affect only the generation of large forces. By contrast, the generation and coordination of the much lower forces required for hand-steadiness appears to be impaired only during the short transient of metabolic recovery. Springer-Verlag, 2006 Manual coordination nationallicence Hand-grip strength nationallicence Load carriage nationallicence Fatigue nationallicence Recovery nationallicence Leyk D. Department IV -Military Ergonomics and Exercise Physiology, Central Institute of the Federal Armed Forces Medical Services Koblenz, Andernacher Str. 100, 56070, Koblenz, Germany aut Rohde U. Department IV -Military Ergonomics and Exercise Physiology, Central Institute of the Federal Armed Forces Medical Services Koblenz, Andernacher Str. 100, 56070, Koblenz, Germany aut Erley O. Department IV -Military Ergonomics and Exercise Physiology, Central Institute of the Federal Armed Forces Medical Services Koblenz, Andernacher Str. 100, 56070, Koblenz, Germany aut Gorges W. Department IV -Military Ergonomics and Exercise Physiology, Central Institute of the Federal Armed Forces Medical Services Koblenz, Andernacher Str. 100, 56070, Koblenz, Germany aut Wunderlich M. Department of Physiology and Anatomy, German Sport University Cologne, Carl-Diem-Weg 6, 50933, Cologne, Germany aut Rüther T. Department of Physiology and Anatomy, German Sport University Cologne, Carl-Diem-Weg 6, 50933, Cologne, Germany aut Essfeld D. Department of Physiology and Anatomy, German Sport University Cologne, Carl-Diem-Weg 6, 50933, Cologne, Germany aut European Journal of Applied Physiology Springer-Verlag 96/5(2006-03-01), 593-599 1439-6319 96:5<593 2006 96 421 https://doi.org/10.1007/s00421-005-0126-0 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s00421-005-0126-0 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Leyk D. Department IV -Military Ergonomics and Exercise Physiology, Central Institute of the Federal Armed Forces Medical Services Koblenz, Andernacher Str. 100, 56070, Koblenz, Germany aut NATIONALLICENCE 700 1- Rohde U. Department IV -Military Ergonomics and Exercise Physiology, Central Institute of the Federal Armed Forces Medical Services Koblenz, Andernacher Str. 100, 56070, Koblenz, Germany aut NATIONALLICENCE 700 1- Erley O. Department IV -Military Ergonomics and Exercise Physiology, Central Institute of the Federal Armed Forces Medical Services Koblenz, Andernacher Str. 100, 56070, Koblenz, Germany aut NATIONALLICENCE 700 1- Gorges W. Department IV -Military Ergonomics and Exercise Physiology, Central Institute of the Federal Armed Forces Medical Services Koblenz, Andernacher Str. 100, 56070, Koblenz, Germany aut NATIONALLICENCE 700 1- Wunderlich M. Department of Physiology and Anatomy, German Sport University Cologne, Carl-Diem-Weg 6, 50933, Cologne, Germany aut NATIONALLICENCE 700 1- Rüther T. Department of Physiology and Anatomy, German Sport University Cologne, Carl-Diem-Weg 6, 50933, Cologne, Germany aut NATIONALLICENCE 700 1- Essfeld D. Department of Physiology and Anatomy, German Sport University Cologne, Carl-Diem-Weg 6, 50933, Cologne, Germany aut NATIONALLICENCE 773 0- European Journal of Applied Physiology Springer-Verlag 96/5(2006-03-01), 593-599 1439-6319 96:5<593 2006 96 421 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer