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Do Running and Strength Exercises Reduce Daily Muscle Inactivity Time?
Taija Finni1, Marja Uusi-Vähälä1, Arto J Pesola1
1Neuromuscular Research Center, Department of Biology of Physical Activity, University of Jyväskylä, Jyväskylä, Finland.
AIMS Public Health
|March 17, 2018
Summary
Strength and interval running exercises increase daily muscle activity, but their impact on overall muscle inactivity is highly individual and does not show a consistent pattern. Exercise interventions need to consider this variability.
Area of Science:
- Exercise Physiology
- Biomedical Engineering
- Sports Science
Background:
- Understanding exercise effects on daily activity is crucial for designing effective physical activity interventions.
- Muscle electromyographic (EMG) activity and inactivity patterns provide insights into daily physical behavior.
- Previous research has not fully elucidated the impact of specific exercise types on long-term daily activity patterns.
Purpose of the Study:
- To examine the effects of strength and interval running exercise sessions on daily muscle activity patterns.
- To quantify changes in muscle electromyographic (EMG) activity and inactivity following different exercise types.
- To investigate the relationship between exercise-induced changes in muscle inactivity and light muscle activity.
Main Methods:
- Utilized textile electrodes embedded in shorts to record quadriceps and hamstring muscle EMG activity over 9.1 ± 1.4 hours/day.
- Measured daily muscle EMG activity across three conditions: a strength training day, an interval running day, and a non-exercise day.
- Analyzed EMG data to determine percentages of muscle inactivity and activity across different intensity levels.
Main Results:
- Muscle inactivity was lower on strength (55 ± 26%) and interval running (53 ± 30%) days compared to non-exercise days (71 ± 12%).
- Reductions in muscle inactivity correlated negatively with increases in light muscle activity for both exercise types (r = -0.971 and r = -0.965).
- Strength exercise increased muscle activity above 50% MVC, while interval running significantly decreased inactivity time; however, strength exercise's impact on inactivity reduction was highly individual.
Conclusions:
- Both strength and interval running effectively increase moderate-to-vigorous muscle activity but constitute a small portion of the daily activity.
- The effect of exercise on reducing daily muscle inactivity is heterogeneous and not systematically compensatory.
- Future physical activity interventions should consider individual variability in response to exercise when aiming to modify daily activity patterns.
Keywords:
combined trainingdaily sedentary timeendurancemuscle activitymuscle inactivityphysical activitystrengthMore Related Videos
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