Muscle activity and physiological responses during running in water and on dry land at submaximal and maximal efforts

Kenji Masumoto, Kyle C. Mefferd, Riley Iyo, John A. Mercer

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

We investigated muscle activity, oxygen uptake, heart rate, and rating of perceived exertion during running in water and on dry land at submaximal and maximal efforts. Eleven recreational runners performed deepwater running (DWR) and treadmill running (TMR) graded exercise tests on separate days. On the third-test day, the subjects exercised at their 60, 80, and 100% of maximal oxygen uptake (VO 2 max) by matching specific stride frequencies or running speeds. VO 2 max, maximal heart rate (HRmax), and rating of perceived exertion at maximal effort (RPEmax) were measured. Furthermore, muscle activity from the rectus femoris, biceps femoris, tibialis anterior, and gastrocnemius were measured. VO 2 max (DWR: 48.9 ± 5.7 ml·kg -1 ·min -1 ; TMR: 59.2 ± 5.6 ml·kg -1 ·min -1 ; p < 0.001) and HRmax (DWR: 174.1 ± 9.6 beats·min -1 ; TMR: 191.2 ± 6.9 beats·min -1 ; p < 0.001) were each lower during DWR vs. TMR. In addition, RPEmax was not significantly different between DWR and TMR (DWR: 17.8 ± 1.9; TMR: 18.4 ± 1.3; p > 0.05). Furthermore, muscle activity from all tested muscles was not influenced by the interaction of mode and intensity (p > 0.05). Muscle activity from all tested muscles was different between modes (p < 0.05) and between intensities (p < 0.001). Specifically, muscle activity from the tested muscles during DWR was 29-69% lower than that of TMR at maximal effort. Athletes and coaches should consider that the exercise intensity during DWR can be overestimated, if exercise prescription was made according to the maximal responses during TMR.

Original languageEnglish
Pages (from-to)1960-1967
Number of pages8
JournalJournal of strength and conditioning research
Volume32
Issue number7
DOIs
Publication statusPublished - 2018

All Science Journal Classification (ASJC) codes

  • Orthopedics and Sports Medicine
  • Physical Therapy, Sports Therapy and Rehabilitation

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