Researchers investigated how different crank rates influence physiological outcomes during upper-body exercise, focusing on the comparison between spontaneously selected rates and those adjusted by ±10%. The study encompassed two types of physical tests: a sub-maximal testing phase, where intensities varied from 50% to 80%, and additional evaluations under controlled crank rate settings.
Participants performed exercises at their freely chosen crank rate (labeled as Ts), as well as at crank rates that were deliberately set 10% lower (T–10%) and 10% higher (T+10%) than the self-selected pace. The research aimed to identify differences in cardiovascular and muscular responses under the three distinct conditions.
Preliminary results indicated measurable variations in physiological markers such as heart rate, oxygen consumption, and perceived exertion depending on the crank rate applied. Notably, performance efficiency and comfort levels showed optimal outcomes when participants cycled at their self-selected pace, while deviations—both reductions and increases—led to altered biomechanical loads and possible reductions in performance efficiency.
The findings suggest that permitting athletes or rehabilitation patients to select their own crank rate may lead to improved efficiency and comfort during upper-body exercise routines. Further research is warranted to explore long-term adaptation effects and to validate these patterns across different populations and fitness levels.
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