运动至关键心率与运动至关键心率相关的功率输出时的反应。
Responses to Exercise at the Critical Heart Rate vs. the Power Output Associated With the Critical Heart Rate.
机构信息
Department of Kinesiology and Health Promotion, University of Kentucky, Lexington, Kentucky.
School of Kinesiology, Applied Health & Recreation, Oklahoma State University, Stillwater, Oklahoma; and.
出版信息
J Strength Cond Res. 2023 Dec 1;37(12):2362-2372. doi: 10.1519/JSC.0000000000004547. Epub 2023 Jun 23.
Succi, PJ, Dinyer-McNeely, TK, Voskuil, CC, Abel, MG, Clasey, JL, and Bergstrom, HC. Responses to exercise at the critical heart rate vs. the power output associated with the critical heart rate. J Strength Cond Res 37(12): 2362-2372, 2023-This study examined the physiological (volume of oxygen consumption [V̇ o2 ], heart rate [HR], power output [PO], respiration rate [RR], muscle oxygen saturation [%SmO 2 ]), neuromuscular (electromyographic and mechanomyographic amplitude [EMG AMP and MMG AMP] and mean power frequency [EMG MPF and MMG MPF]), and perceptual (rating of perceived exertion [RPE]) responses during exercise anchored at the critical heart rate (CHR) vs. the PO associated with CHR (PCHR). Nine subjects (mean ± SD ; age = 26 ± 3 years) performed a graded exercise test and 4 constant PO trials to exhaustion at 85-100% of peak PO (PP) to derive CHR and PCHR on a cycle ergometer. Responses were recorded during trials at CHR (173 ± 9 b·min -1 , time to exhaustion [T Lim ] = 45.5 ± 20.2 minutes) and PCHR (198 ± 58 W, T Lim = 21.0 ± 17.8 minutes) and normalized to their respective values at PP in 10% intervals. There were significant ( p ≤ 0.05) mode (CHR vs. PCHR) × time (10%-100% T Lim ) interactions for all variables ( p < 0.001-0.036) except MMG AMP ( p > 0.05). Post hoc analyses indicated differences across time for CHR V̇ o2 (%change = -22 ± 16%), PCHR V̇ o2 (19 ± 5%), CHR RR (24 ± 23%), PCHR RR (45 ± 14%), CHR PO (-33 ± 11%), PCHR HR (22 ± 5%), CHR RPE (22 ± 14%), PCHR RPE (39 ± 6%), CHR %SmO 2 (41 ± 33%), PCHR %SmO 2 (-18 ± 40%), CHR EMG AMP (-13 ± 15%), PCHR EMG AMP (13 ± 13%), CHR EMG MPF (9 ± 8%), CHR MMG MPF (7 ± 11%), and PCHR MMG MPF (-3 ± 14%). The critical heart rate was more sustainable than PCHR but required adjustments in PO which traversed intensity domains and caused dissociations of the responses previously observed in exercise anchored to PO. These dissociations indicated the demands to exercise varied with anchoring scheme and provides an important consideration for practitioners prescribing endurance exercise.
苏奇、PJ、丁尼尔-麦克尼利、TK、沃斯库尔、CC、阿贝尔、MG、克雷斯利、JL 和伯格斯特龙，HC。在关键心率与与关键心率相关的功率输出时的运动反应。J 力量与调节研究 37（12）：2362-2372，2023-本研究检查了在关键心率（CHR）时的生理（耗氧量[V̇o2]、心率[HR]、功率输出[PO]、呼吸率[RR]、肌肉氧饱和度[%SmO2]）、神经肌肉（肌电图和肌动图幅度[EMG AMP 和 MMG AMP]和平均功率频率[EMG MPF 和 MMG MPF]）和感知（感知用力程度[RPE]）反应，以及在与 CHR 相关的功率输出（PCHR）时的运动反应。9 名受试者（平均值±标准差；年龄=26±3 岁）在功率自行车上进行了分级运动测试和 4 次恒定 PO 至力竭试验，以得出 CHR 和 PCHR。在 CHR（173±9b·min-1，T Lim=45.5±20.2 分钟）和 PCHR（198±58W，T Lim=21.0±17.8 分钟）试验期间记录了反应，并以各自在 10%间隔内的 PP 值进行归一化。所有变量（p<0.001-0.036）均存在模式（CHR 与 PCHR）×时间（10%-100%T Lim）的显著（p≤0.05）交互作用（p<0.001-0.036），除了 MMG AMP（p>0.05）。事后分析表明，CHR V̇o2（%变化=-22±16%）、PCHR V̇o2（19±5%）、CHR RR（24±23%）、PCHR RR（45±14%）、CHR PO（-33±11%）、PCHR HR（22±5%）、CHR RPE（22±14%）、PCHR RPE（39±6%）、CHR %SmO2（41±33%）、PCHR %SmO2（-18±40%）、CHR EMG AMP（-13±15%）、PCHR EMG AMP（13±13%）、CHR EMG MPF（9±8%）、CHR MMG MPF（7±11%）和 PCHR MMG MPF（-3±14%）在时间上存在差异。CHR 比 PCHR 更可持续，但需要调整 PO，这跨越了强度域，并导致以前在与 PO 相关的运动中观察到的反应出现分离。这些分离表明，运动的要求因锚定方案而异，这为从业者制定耐力运动提供了一个重要的考虑因素。
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