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Completed

NCT Number: NCT02852668

Power Training Versus Strength Training in the Elderly

The inexorable decline in motor skills during aging provides the investigators with an elderly population with various functional limitations. Among these, the ability to walk, being associated with the risk of falling has been studied by several authors. The adoption of strength and power training as an intervention strategy to reduce the negative effects arising from the physiological or pathological process of aging has been widely discussed in these studies. However, the effects of these interventions on biomechanical gait indicators have not been fully debated yet. Therefore, this study aimed to compare the effects of these two training protocols on functional capacities and biomechanical gait parameters of elderly women.

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Key information

Conditions

Healthy

Age range

65 year–75 year

Sex eligibility

Female

Study type

Interventional

Phase

Not applicable

About this study

Three female groups, homogenized by age, body mass index and physical activity level, were formed: the control group (GC: n=8, 69±4 years old), the strength training group (GF: n=6, 67±4 years old) and the power training group (GP, n=7, 68±4 years old). No extra activity was induced to GC's routine. Meanwhile, GF and GP underwent 12 weeks of strength and power training, respectively, with three weekly sessions. While GF performed the exercises with moderate speed (70-90% of 1RM), the GP executed them in fast speed (40-60% of 1RM). A kinematic and electromyographic gait evaluation, as well as balance and functional capacity evaluations, were conducted prior and after the intervention period.

Who can participate

Healthy volunteers accepted: Yes

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

  • sedentary women with no physical mobility limitations

Exclusion criteria

  • attending less than 75% of the intervention sessions and not attending the final evaluation

Treatment and study plan

Power Training

Other

This experimental groups underwent an intervention period of power training

Strength training

Other

This experimental groups underwent an intervention period of strength training

Primary outcomes

  1. Gait kinematics

    Time frame: through study completion, an average of 6 months

    toe clearance: minimum vertical distance of the forefoot and the ground during swing phase

  2. Timed up and go test

    Time frame: through study completion, an average of 6 months

    time needed to get up from a seated position walk 3 meters and walk back to the chair

  3. Muscle power

    Time frame: through study completion, an average of 6 months

    knee extensors muscle power

  4. electromyography gait analysis

    Time frame: through study completion, an average of 6 months

    Knee extensors and flexors muscles co-contraction during the gait cycle

Sponsors and collaborators

Lead sponsor

University of Sao Paulo

Other

Registry information

Official study title

Biomechanical Gait Indicators of Elderly Women in Response to Strength Training or Power Training

Important dates

Study start
2011
Primary completion
2011
Study completion
2012
First posted
Aug 2, 2016
Registry last updated
Aug 2, 2016

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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