Abstract
Aim: Fish soup is a traditional Chinese food usually offered as a healthy supplement to elders, pregnant women and persons who just had surgery. Silver perch (Santé premium silver perch essence, SPSPE) extract contains various quality proteins, collagen, minerals, trace elements, and branch chain amino acids (BCAA) that could help individuals recover from exhaustion and control body weight. However, there are very limited studies exploring the effects of fish extracts on exercise performance and fatigue, and relevant physiological mechanisms. Therefore, the purpose of this study was to investigate the effects of chronic SPSPE administration on exhaustive exercise performance.Method: Male Wistar rats weighing around 250 g were divided into 4 groups: Control, 1X SPSPE (6.2 ml/kg), 2X SPSPE (12.4 ml/kg) and 5X SPSPE (31.0 ml/kg). Rats were administrated SPSPE by oral gavage feeding every day for 33 days. Their body weight were measured every week. Before and after the exhaustive swimming test, the blood was collected for circulating lactate, glucose, ammonia, hormones, and myoglobin analysis. Rats were sacrificed after performing an exhaustive swimming exercise test. The liver tissues were collected for glycogen content and H&E staining.Results: After the administration of 1X and 5X SPSPE, swimming fatigue was significantly delayed (p = 0.024). There was no difference in the hormone plasma level between the control and SPSPE groups. The induction of plasma corticosterone and TBARS by exhaustive swimming exercise could be decreased by SPSPE administration. The increased plasma myoglobin concentration from exhaustive swimming exercise was weakened by SPSPE supplementation. The higher glycogen sparing contained in liver tissue was observed in SPSPE-treated groups (p < 0.05).Conclusion: SPSPE could efficiently delay swimming fatigue through sparing of liver glycogen and attenuation of plasma TBARS, myoglobin induction by exhaustive exercise. Our findings provide a scientific-based fundamental information and better understanding for developing a fish extract-based anti-fatigue supplement.
Highlights
Exercise-induced fatigue is mainly associated with excessive exercise leading to fatigue and/or discomfort (Carroll et al, 2017)
The role of endocrine system plays during exercise metabolism is well-established, we are still learning about the exercise-induced changes to the endocrine system itself that are associated with exercise adaptation and fatigue recovery (Kraemer and Ratamess, 2005)
Plasma thiobarbituric acid reactive substances (TBARS) formation decreased with increasing perch essence intake, which significantly reduced myoglobin formation per unit time of exhaustive exercise
Summary
Exercise-induced fatigue is mainly associated with excessive exercise leading to fatigue and/or discomfort (Carroll et al, 2017). Carbohydrates are the main source of energy for sustaining endurance exercise (Gonzalez et al, 2016) The use of such energy is affected by exercise intensity, exercise duration, and nutrient status (Betts et al, 2008; Cermak and van Loon, 2013; Gonzalez et al, 2016). When the body exhibits insufficient anti-oxidative capacity, it might not be able to counter the cytotoxic effect induced by the presence of excess free radicals (Droge, 2002). This situation begs the question of whether the endocrine system can be enhanced via the intake of specific nutrients to alleviate the fatigue caused by excessive exercise, thereby improving exercise performance
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