Exercise-induced muscle damage and running economy in humans

• Autor(a) principal: Assumpção, Cláudio de Oliveira [UNESP]
• Data de Publicação: 2013
• Outros Autores: Lima, Leonardo Coelho Rabello [UNESP], Oliveira, Felipe Bruno Dias [UNESP], Greco, Camila Coelho [UNESP], Denadai, Benedito Sérgio [UNESP]
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Repositório Institucional da UNESP
• DOI: 10.1155/2013/189149
• Texto Completo: http://dx.doi.org/10.1155/2013/189149; http://hdl.handle.net/11449/74808
• topic: creatine kinase MB; cycling; energy expenditure; exercise; human; lactate blood level; measurement; muscle injury; muscle rigidity; muscle strength; neuromuscular function; oxygen consumption; review; running; running economy; skiing; athlete; diet supplementation; injury; muscle disease; pathophysiology; physiology; resistance training; skeletal muscle; Athletes; Dietary Supplements; Exercise; Humans; Muscle Strength; Muscle, Skeletal; Muscular Diseases; Resistance Training; Running

Running economy (RE), defined as the energy demand for a given velocity of submaximal running, has been identified as a critical factor of overall distance running performance. Plyometric and resistance trainings, performed during a relatively short period of time (15-30 days), have been successfully used to improve RE in trained athletes. However, these exercise types, particularly when they are unaccustomed activities for the individuals, may cause delayed onset muscle soreness, swelling, and reduced muscle strength. Some studies have demonstrated that exercise-induced muscle damage has a negative impact on endurance running performance. Specifically, the muscular damage induced by an acute bout of downhill running has been shown to reduce RE during subsequent moderate and high-intensity exercise (>65% VOax). However, strength exercise (i.e., jumps, isoinertial and isokinetic eccentric exercises) seems to impair RE only for subsequent high-intensity exercise (90% VOax). Finally, a single session of resistance exercise or downhill running (i.e., repeated bout effect) attenuates changes in indirect markers of muscle damage and blunts changes in RE. © 2013 Cláudio de Oliveira Assumpção et al.