Academic Journal
The improvement in exercise performance during reduced muscle mass exercise is associated with an increase in femoral blood flow in older and younger endurance-trained athletes
| العنوان: | The improvement in exercise performance during reduced muscle mass exercise is associated with an increase in femoral blood flow in older and younger endurance-trained athletes |
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| المؤلفون: | Haddad, Toni, Spence, Angela L., Peiffer, Jeremiah, Blain, Gregory M., Brisswalter, Jeanick, Abbiss, Chris R. |
| المصدر: | Research outputs 2022 to 2026 |
| بيانات النشر: | Edith Cowan University, Research Online, Perth, Western Australia |
| سنة النشر: | 2024 |
| المجموعة: | Edith Cowan University (ECU, Australia): Research Online |
| مصطلحات موضوعية: | [RSTDPub], ageing, Blood flow, en-durance, muscle mass, muscle oxygenation, ultrasound, Medicine and Health Sciences, Sports Sciences |
| الوصف: | This study investigated whether the improved performance observed with maximal self-paced single-leg (SL), compared with double-leg (DL) cycling, is associated with enhanced femoral blood flow and/or altered tissue oxygenation. The hyperaemic response to exercise was assessed in younger and older athletes. Power output was measured in 12 older (65 ± 4 y) and 12 younger (35 ± 5 y) endurance-trained individuals performing 2 x 3 min maximal self-paced exercise using SL and DL cycling. Blood flow (BF) in the femoral artery was assessed using Doppler ultrasound and muscle oxygenation was measured using near-infrared spectroscopy on the vastus lateralis. SL cycling elicited a greater power output (295 ± 83 vs 265 ± 70 W, P < 0.001) and peak femoral BF (1749.1 ± 533.3 vs 1329.7 ± 391.7 ml/min, P < 0.001) compared with DL cycling. Older individuals had a lower peak BF in response to exercise (1355.4 ± 385.8 vs 1765.2 ± 559.6 ml/min, P = 0.019) compared with younger individuals. Peak BF in response to exercise was correlated with power output during SL (r = 0.655, P = 0.002) and DL (r = 0.666, P = 0.001) cycling. The greater exercise performance during SL compared with DL cycling may be partly explained by a greater hyperaemic response when reducing active muscle mass. Despite regular endurance training, older athletes had a lower femoral BF in response to maximal self-paced exercise compared with younger athletes. |
| نوع الوثيقة: | text |
| اللغة: | unknown |
| Relation: | https://doi.org/10.52082/jssm.2024.46 |
| DOI: | 10.52082/jssm.2024.46 |
| الاتاحة: | https://ro.ecu.edu.au/ecuworks2022-2026/3886 https://doi.org/10.52082/jssm.2024.46 |
| Rights: | free_to_read |
| رقم الانضمام: | edsbas.C327EAB |
| قاعدة البيانات: | BASE |
| DOI: | 10.52082/jssm.2024.46 |
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