Isokinetic Exercise Velocities and Blood Lactate Concentrations in Strength/Power and Endurance Athletes

Regan, William F.; Potteiger, Jeffrey A.

doi:10.1519/1533-4287(1999)013<0157:ievabl>2.0.co;2

Cited by 4 publications

(2 citation statements)

References 15 publications

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“…Blood lactate measures demonstrated that the Isok60 and Isok300 placed a metabolic stress upon the participants' muscles. The accumulation of blood lactate during the recovery intervals is similar to the values reported in both adult (56,61) and pubescent boys' (49) resistance exercise. Thus, the ability to sustain forces may be viewed as a compromise between a physical or metabolic stress and neuromuscular strategies to enhance or sustain performance (3).…”

Section: Discussionsupporting

confidence: 84%

Potentiation and Recovery Following Low- and High-Speed Isokinetic Contractions in Boys

Chaouachi¹,

Haddad²,

Castagna

et al. 2011

Pediatric Exercise Science

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The objective of this study was to examine the response and recovery to a single set of maximal, low and high angular velocity isokinetic leg extension-flexion contractions with boys. Sixteen boys (11-14 yrs) performed 10 isokinetic contractions at 60°.s-1 (Isok60) and 300°.s-1 (Isok300). Three contractions at both velocities, blood lactate and ratings of perceived exertion were monitored pretest and at 2, 3, 4, and 5 min of recovery (RI). Participants were tested in a random counterbalanced order for each velocity and recovery period. Only a single contraction velocity (300°.s-1 or 60°.s-1) was tested during recovery at each session to remove confounding influences between the recovery intervals. Recovery results showed no change in quadriceps' power at 300°.s-1, quadriceps' power, work and torque at 60°.s-1 and hamstrings' power and work with 60°.s-1. There was an increase during the 2 min RI in hamstrings' power, work and torque and quadriceps' torque with isokinetic contractions at 300°.s-1 suggesting a potentiating effect. Performance impairments during recovery occurred for the hamstrings torque at 60°.s-1 and quadriceps work with 300°.s-1. In conclusion, 10 repetitions of either low or high velocity isokinetic contractions (Isok60 or Isok300) resulted in full recovery or potentiation of most measures within 2 min in boys. The potentiation effect predominantly occurred following the hamstrings Isok300 which might be attributed to a greater agonist-antagonist torque balance and less metabolic stress associated with the shorter duration higher velocity contractions.

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Section: Discussionsupporting

confidence: 84%

Potentiation and Recovery Following Low- and High-Speed Isokinetic Contractions in Boys

Chaouachi¹,

Haddad²,

Castagna

et al. 2011

Pediatric Exercise Science

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“…In contrast, previous studies on highly trained endurance athletes (cyclists) showed that during cycle ergometer testing, they produced comparable BLato non-cycling trained males exercising at different workloads [54]. Nevertheless, the fiber-type characteristics may account for differences in the amount of BLathat is formed during exercise for specific types of athletes [55]. The lowest BLaobserved in the END group was most probably due to their specific training adaptations that increase BLaclearance capacity.…”

Section: Acute Metabolic Responses (Rer and Bla -)mentioning

confidence: 74%

Acute Cardiorespiratory and Metabolic Responses to Incremental Cycling Exercise in Endurance- and Strength-Trained Athletes

Jurasz

Boraczyński

Laskin

et al. 2022

Biology

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The purpose of this study was to examine the acute effects of a progressive submaximal cycling exercise on selected cardiorespiratory and metabolic variables in endurance and strength trained athletes. The sample comprised 32 participants aged 22.0 ± 0.54 years who were assigned into three groups: an endurance trained group (END, triathletes, n = 10), a strength trained group (STR, bodybuilders, n = 10), and a control group (CON, recreationally active students, n = 12). The incremental cycling exercise was performed using a progressive protocol starting with a 3 min resting measurement and then a 50 W workload with subsequent constant increments of 50 W every 3 min until 200 W. The following cardiometabolic variables were evaluated: heart rate (HR), oxygen uptake (VO2), carbon dioxide production (VCO2), respiratory exchange ratio (RER), systolic and diastolic blood pressure (SBP and DBP), and blood lactate (BLa−). We found the between-group differences in metabolic variables (the average RER and BLa−) were statistically significant (Tukey’s HSD test: CON vs. STR, p < 0.01 and p < 0.05, respectively; CON vs. END, p < 0.001; END vs. STR, p < 0.001). RER and BLa– differences in all groups depended on the workload level (G-G-epsilon = 0.438; p < 0.004 and G-G-epsilon = 0.400; p < 0.001, respectively). There were no significant differences in cardiorespiratory variables between endurance- and strength-trained groups. In conclusion, this study demonstrated that acute cardiorespiratory responses at each of the four submaximal workloads were comparable in endurance- compared to strength-trained athletes, but significantly different compared to recreationally active men. However, there were significant differences in the metabolic responses of RER and BLa−. Based on our findings we recommend that endurance-trained athletes follow a concurrent training program, combined strength and endurance training, to improve neuromuscular parameters and thus optimize their economy of movement and endurance-specific muscle power capacity.

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Kuvvet Antrenmanlarına Bağlı Akut Laktat Üretimi

Atabek¹

2009

Ankara Üniversitesi Beden Eğitimi Ve Spor Yüksekokulu SPORMETRE Beden Eğitimi Ve Spor Bilimleri Dergisi

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ÖZETKuvvet/güç adaptasyonu için akut mekanik ve hormonal uyaranların önemi çok iyi tanımlanmıştır. Bununla birlikte, kuvvet antrenmanlarına adaptasyonun oluşabilmesi için akut metabolik uyaranların da önemli olabileceği vurgulanmaktadır. Geleneksel yaklaşım içinde dayanıklılık egzersizleri sırasında görülen metabolik yanıtların bu egzersiz türünde bazı adaptasyonlara neden olurken, kuvvet ve güç çıktılarında anlamlı değişikliklere neden olmadığına inanılır. Ancak kasın büyümesini amaçlayan kuvvet antrenmanlarının kan laktat seviyesini göreceli olarak daha fazla arttırdığı gözlenmiştir. Buna karşın, pratikte kullanılan kuvvet/güç antrenmanlarının organizma üzerine bindirdiği metabolik stres hakkında çok az şey bilinmektedir. Kuvvet antrenmanları sırasında laktatın antrenmanlara yanıtı veya laktatın kanda birikimi nadiren vurgulanmakta, bu kapsamda, laktat üretiminin kuvvet antrenmanlarından nasıl etkilendiğinin incelenmesi ve konu ile ilgili literatürün derlenmesi amaçlanmıştır. Bu amaç doğrultusunda; kuvvet antrenmanlarında adaptasyon mekanizmaları ve özellikle metabolik uyaranlar ile ilgili olanlar vurgulanmıştır. Pratikte kullanılan üç genel kuvvet antrenman türünün akut laktat üretimine etkisi incelenmiştir. Bunlar: 1-Hipertrofi antrenmanı (kontrollü hareketler, şiddetti düşük-orta, dinlenme süreleri kısa ve antrenman kapsamı yüksektir), 2-Nöronal antrenmanı (hareketin hızlı yapılması amaçlanır, şiddeti yüksek, dinlenme süreleri uzun ve antrenman kapsamı düşüktür), 3-Dinamik/güç antrenmanıdır (patlayıcı ve/veya balistik hareketler yapılır, şiddetti düşük, dinlenme süreleri çok kısa veya çok uzun değil ve antrenman kapsamı daha düşüktür). Akut laktat üretimini etkileyen yaş, cinsiyet ve antrenman durumu faktörleri de incelenmiştir.Anahtar Kelimeler: Kuvvet Antrenmanı, Yaş, Cinsiyet, Antrenman Durumu, Laktat Üretimi ACUTE LACTATE PRODUCTION DURING RESISTANCE TRAINING ABSTRACTThe importance of acute mechanic and hormonal stimulus for strength and power adaptation has been well defined. Recently, it has been emphasized that acute metabolic stimulus may also be very important for strength adaptation. Traditionally, it is believed that the metabolic responses that occurred during endurance exercises are the causes of adaptation to this kind of exercises, but the metabolic responses that occurred during resistance exercises are not effective for adaptation to this kind of exercises. On the other hand, it has been demonstrated that the strength training that aimed muscle growth, increased relatively the blood lactate levels more. Besides this, little is known about the metabolic stress imposed on system by different strength / power training types used in practice. Acute lactate responses to resistance training or lactate accumulation in blood during resistance training are rarely emphasized. In this context, we aimed to investigate how the resistance training effects the lactate production and also to compile the literature about this topic. According to the aim, adaptation mechanism of strength training and especia...

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Isokinetic Exercise Velocities and Blood Lactate Concentrations in Strength/Power and Endurance Athletes

Cited by 4 publications

References 15 publications

Potentiation and Recovery Following Low- and High-Speed Isokinetic Contractions in Boys

Potentiation and Recovery Following Low- and High-Speed Isokinetic Contractions in Boys

Acute Cardiorespiratory and Metabolic Responses to Incremental Cycling Exercise in Endurance- and Strength-Trained Athletes

Kuvvet Antrenmanlarına Bağlı Akut Laktat Üretimi

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