Effect of 3-week high-intensity interval training on VO2max, total haemoglobin mass, plasma and blood volume in well-trained athletes

Menz, Verena; Strobl, Jochen; Faulhaber, Martin; Gatterer, Hannes; Burtscher, Martin

doi:10.1007/s00421-015-3211-z

Cited by 20 publications

(27 citation statements)

References 39 publications

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“…17,19,20 Similar to our findings, in a crossover design Keiser et al 20 also implemented variable training loads set to elicit the same relative cardiac strain in both their hot and cool training conditions and also found that none of the heat adaptations (eg, increased PV) correlated to changes in exercise performance. Indeed, although not always shown, 34 increased training load or multi-day competition in already hypervolemic elite endurance athletes (international level cyclists) has been shown to augment PV by 5%-20% in as little as 6-7 days regardless of the heat load. [35][36][37] Importantly, the current study's outcomes, in combination with training effects on PV, suggest that many of the previously published HA studies without an exercise control group in mild/cool conditions matched for relative cardiac work stress, may be showing outcomes that are due to both exercise stress, and metabolic heat.…”

Section: Incorporation Of An Exercise Control Group At Same Relativmentioning

confidence: 99%

Effects of hydration status during heat acclimation on plasma volume and performance

Pethick

Murray

McFadyen

et al. 2018

Scandinavian Med Sci Sports

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The impact of hydration status was investigated during a 5‐day heat acclimation (HA) training protocol vs mild/cool control conditions on plasma volume (PV) and performance (20 km time‐trial [TT]). Sub‐elite athletes were allocated to one of two heat training groups (90 min/day): (a) dehydrated to ~2% body weight (BW) loss in heat (35°C; DEH; n = 14); (b) euhydrated heat (35°C; EUH; n = 10), where training was isothermally clamped to 38.5°C core temperature (Tc). A euhydrated mild control group (22°C; CON; n = 9) was later added, with training clamped to the same relative heart rate (~75% HRmax) as elicited during DEH and EUH; thus all groups experienced the same internal training stress (%HRmax). Five‐day total thermal load was 30% greater (P < 0.001) in DEH and EUH vs CON. There were significant differences in the average percentage of maximal work rate (%Wmax) across all groups (DEH: 24 ± 6%; EUH: 34 ± 9%; CON: 48 ± 8%Wmax) during training required to elicit the same %HRmax (77 ± 4% HRmax). There were no significant differences pre‐to post‐HA between groups for PV (DEH: +1.7 ± 10.1%; EUH: +4.8 ± 10.2%; CON: +5.2 ± 4.0%), but there was a significant pooled group PV increase, as well as a 97% likely pooled improvement in TT performance (DEH: −1.8 ± 2.8%; EUH: −1.9 ± 2.1%, CON; −1.8 ± 2.8%; P = 0.136). Due to a lack of between‐group differences for PV and TT, but pooled group increases in PV and 97% likely group increase in TT performance, over 5 days of intense training at the same average relative cardiac load suggests that overall training stress may also impact significant adaptations beyond heat and hydration stress.

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Section: Incorporation Of An Exercise Control Group At Same Relativmentioning

confidence: 99%

Effects of hydration status during heat acclimation on plasma volume and performance

Pethick

Murray

McFadyen

et al. 2018

Scandinavian Med Sci Sports

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“…Namun hasil penelitian ini membuktikan bahwa eritrosit dan hemoglobin tidak mengalami peningkatan nilai yang signifikan sehingga dapat dikatakan bahwa faktor suplai tidak mengalami perubahan setelah subyek menjalani latihan dengan metode High Intensity Interval Training selama 8 minggu. Hal tersebut serupa dengan studi yang dilakukan oleh Menz (Menz, Strobl, Faulhaber, Gatterer, & Burtscher, 2015) (Roy, 2013). Ada beberapa metode latihan lain yang dapat meningkatkan VO 2 max, dan pada umumnya latihan tersebut merupakan latihan dengan prinsip aerobik.…”

Section: Pendahuluanunclassified

Korelasi perubahan nilai VO2max, eritrosit, hemoglobin dan hematokrit setelah latihan high intensity interval training

Putra

Ardha

Kinasih

et al. 2017

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Kebugaran kardiorespirasi memungkinkan aktivitas fisik dalam waktu lama dan memerlukan oksigen untuk mendapatkan energi. Transpor oksigen dimediasi oleh hemoglobin yang terdapat dalam eritrosit. Kebugaran kardiorespirasi dapat diukur berdasarkan nilai VO2max. Metode latihan High Intensity Interval Training (HIIT) terbukti dapat meningkatkan VO2max. Namun belum jelas apakah peningkatan VO2max diiringi dan berhubungan dengan perubahan nilai hemoglobin, eritrosit dan hematokrit. Penelitian ini mempelajari korelasi perubahan nilai VO2max, hemoglobin, eritrosit dan hematokrit sebelum dan sesudah latihan HIIT selama 8 minggu. Berdasarkan hasil penelitian, VO2max meningkat sebesar 7,33±4,03 (ml·kg-1·min-1) atau 20,36% (p<0,05), hemoglobin dan eritrosit meningkat sebesar 0,04±0,63 atau 0,24% (p>0,05) dan 0,02±0,22·106/µL atau 0,32% (p>0,05) sedangkan hematokrit mengalami penurunan sebesar 0,12±2% dari volume darah atau 0,27% (p>0,05) dari nilai pre-test. Uji korelasi menunjukkan ada hubungan (p<0,05) antara perubahan nilai hemoglobin, eritrosit dan hematokrit, namun tidak terdapat hubungan (p>0,05) dengan peningkatan VO2max. Correlation of Change in VO2Max, Hemoglobin, Erythrocytes, and Hematocrit After High Intensity Interval Training AbstractCardiorespiratory fitness allows physical activity for a long time and requires oxygen to gain energy. Oxygen transport mediated by hemoglobin present in erythrocytes. Cardiorespiratory fitness can be measured based on VO2max values. High Intensity Interval Training (HIIT) have been shown to improve VO2max. It is not clear whether the increase in VO2max is accompanied and associated with changes in hemoglobin, erythrocyte and hematocrit values. This study aim to find out the correlation of VO2max, hemoglobin, erythrocyte and hematocrit changes before and after HIIT for 8 weeks. The results VO2max increased by 7.33±4.03 (ml·kg-1·min-1) or 20.36% (p<0.05), hemoglobin and erythrocytes increased by 0.04±0.63 or 0.24% (p>0.05) and 0.02±0.22·106/μL or 0.32% (p>0.05) whereas the hematocrit decreased by 0.12±2% of blood volume or 0.27% (p>0.05) of the pre-test value. The correlation test showed a correlation (p<0.05) between changes in hemoglobin, erythrocyte and hematocrit values, but no relationship (p>0.05) with increased VO2max.

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“…The non-SKIMO-equipment-specific exercise test was an uphill running protocol that was previously used in several studies in trained participants [ 17 , 18 ], described in detail in Table 2 . Briefly, exercise started at 5.0 km/h and 5% inclination for two minutes; then, the inclination was set at 10% for another two minutes.…”

Section: Methodsmentioning

confidence: 99%

Assessment of Maximal Aerobic Capacity in Ski Mountaineering: A Laboratory-Based Study

Menz

Niedermeier

Stehle

et al. 2021

IJERPH

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This study aims to evaluate the agreement in maximum oxygen consumption (V˙O2max) between a running protocol and a ski mountaineering (SKIMO) protocol. Eighteen (eleven males, seven females) ski mountaineers (age: 25 ± 3 years) participated in the study. V˙O2max, maximum heart rate (HRmax), and maximum blood lactate concentration (BLAmax) were determined in an incremental uphill running test and an incremental SKIMO-equipment-specific test. V˙O2max did not differ between the SKIMO and uphill running protocols (p = 0.927; mean difference –0.07 ± 3.3 mL/min/kg), nor did HRmax (p = 0.587, mean difference –0.7 ± 5.1 bpm). A significant correlation was found between V˙O2max SKIMO and V˙O2max running (p ≤ 0.001; ICC = 0.862 (95% CI: 0.670−0.946)). The coefficient of variation was 4.4% (95% CI: 3.3−6.5). BLAmax was significantly lower for SKIMO compared to running (12.0 ± 14.1%; p = 0.002). This study demonstrates that V˙O2max determined with a traditional uphill running protocol demonstrates good agreement with an equipment-specific SKIMO protocol.

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Effect of 3-week high-intensity interval training on VO2max, total haemoglobin mass, plasma and blood volume in well-trained athletes

Abstract: Eleven HIT sessions added to usual training did neither improve VO2max nor haematological parameters compared to the CG.

Cited by 20 publications

References 39 publications

Effects of hydration status during heat acclimation on plasma volume and performance

Effects of hydration status during heat acclimation on plasma volume and performance

Korelasi perubahan nilai VO2max, eritrosit, hemoglobin dan hematokrit setelah latihan high intensity interval training

Assessment of Maximal Aerobic Capacity in Ski Mountaineering: A Laboratory-Based Study

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