Handcycling with concurrent lower body low-frequency electromyostimulation significantly increases acute oxygen uptake in elite wheelchair basketball players: an acute crossover trial.

Autor:	Rappelt L; 1Department of Intervention Research in Exercise Training, German Sport University Cologne, Cologne, Germany; Department of Movement and Training Science, University of Wuppertal, Wuppertal, Germany. l.rappelt@dshs-koeln.de., Held S; Department of Intervention Research in Exercise Training, German Sport University Cologne, Cologne, Germany; Department of Sport and Management, IST University of Applied Sciences, Düsseldorf, Germany., Micke F; Department of Intervention Research in Exercise Training, German Sport University Cologne, Cologne, Germany; Department of Sport and Management, IST University of Applied Sciences, Düsseldorf, Germany., Wiedenmann T; Department of Intervention Research in Exercise Training, German Sport University Cologne, Cologne, Germany., Deutsch JP; Department of Intervention Research in Exercise Training, German Sport University Cologne, Cologne, Germany., Kleinöder H; Department of Intervention Research in Exercise Training, German Sport University Cologne, Cologne, Germany., Donath L; Department of Intervention Research in Exercise Training, German Sport University Cologne, Cologne, Germany.
Jazyk:	angličtina
Zdroj:	Journal of rehabilitation medicine [J Rehabil Med] 2024 Jun 08; Vol. 56, pp. jrm40028. Date of Electronic Publication: 2024 Jun 08.
DOI:	10.2340/jrm.v56.40028
Abstrakt:	Objective: Wheelchair basketball (WCB) demands high-intensity training due to its intermittent nature. However, acute oxygen uptake (V˙O2) in handcycling is restricted. Combining handcycling with low-frequency electromyostimulation (LF-EMS) may enhance V˙O2 in elite WBC athletes. Design: Randomized crossover trail. Subjects: Twelve German national team WCB players (age: 25.6 [5.6] years, height: 1.75 [0.16] m, mass: 74.0 [21.7] kg, classification: 2.92 [1.26]). Method: Participants underwent 2×5 min of handcycling (60 rpm, ¾ bodyweight resistance in watts) (HANDCYCLE) and 2×5 min of handcycling with concurrent LF-EMS (EMS_HANDCYCLE). LF-EMS (4Hz, 350µs, continuous stimulation) targeted gluteal, quadriceps, and calf muscles, adjusted to individual pain thresholds (buttocks: 69.5 [22.3] mA, thighs: 66.8 [20.0] mA, calves: 68.9 [31.5] mA). Results: Significant mode-dependent differences between HANDCYCLE and EMS_HANDCYCLE were found in V˙O2 (17.60 [3.57] vs 19.23 [4.37] ml min-1 kg-1, p = 0.001) and oxygen pulse (16.69 [4.51] vs 18.41 [5.17] ml, p = 0.002). ΔLactate was significantly lower in HANDCYCLE (0.04 [0.28] vs 0.31 [0.26] mmol l-1). Although perceived effort did not differ (p = 0.293), discomfort was rated lower in HANDCYCLE (1.44 [1.28] vs 3.94 [2.14], p = 0.002). Conclusion: LF-EMS applied to the lower extremities increases oxygen demand during submaximal handcycling. Thus, longitudinal application of LF-EMS should be investigated as a potential training stimulus to improve aerobic capacity in wheelchair athletes.
Databáze:	MEDLINE
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