Research Summary
Analyzed using Evidence Intelligence™

Higher protein intake improves muscle strength in elderly with T2D

Last updated August 22, 2026

Key finding

Muscle strength of knee extension improved significantly (p < 0.05).

This study investigated the effects of dietary protein manipulation on muscle strength and position sense in elderly individuals with Type 2 diabetes, finding significant improvements with higher protein intake.

Quick read

Study at a glance

The essential study design details in one scan.

EvidenceScore™

Moderate

Study type

RCTs

Follow-up

Short-Term (≤3 mo)

Risk of bias

Some Concerns

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Plain-language summary

What this paper says

A plain-language read of the study’s main message and where it applies.

Study focus

This study investigated the effects of dietary protein manipulation on muscle strength and position sense in elderly individuals with Type 2 diabetes, finding significant improvements with higher protein intake.

Clinical relevance

This study highlights the potential of dietary protein manipulation as a strategy to enhance muscle strength in elderly individuals with Type 2 diabetes. Improved muscle strength can lead to better mobility and reduced risk of falls, which is crucial for maintaining independence and quality of life in this population.

Keep in mind

The study's sample size may limit generalizability. Results may not apply to younger populations or those without diabetes. The effect of dietary adherence was not directly measured.

Published in

Journal Reference

Publication details and source links for this paper.

Dionysia A, Tzortzis N, Gerasimos T, et al. Dietary Protein Manipulation Improves Muscle Strength and Position Sense in Elderly with Type 2 Diabetes. Journal of Functional Morphology and Kinesiology. 2024;9(2):62. doi:10.3390/jfmk9020062

Main Effects

Muscle strength of knee extension improved significantly (3.4 kg increase, p < 0.001).

Muscle strength of shoulder extension improved significantly (2.5 kg increase, p < 0.001).

Position sense at the knee joint showed a tendency for improvement (p = 0.072).

Evidence network

How this study fits

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Evidence Context

This study contributes evidence to Animal Protein Diet, Standard diet and Muscular strength, Position sense at the knee joint, Lean body mass.

Primary intervention

Animal Protein Diet

Primary outcomes

  • Muscular strength
  • Position sense at the knee joint
  • Lean body mass

Evidence relationships

Intervention and outcome relationships this study adds to the evidence network.

3
Evidence pairs
3
Relationships
1
Evidence topics
contributes_evidence

Editorial context

Why this study matters

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Evidence network role

This section describes how the study fits into the current evidence network. It does not determine whether an intervention works on its own.

Moderate contributionModerate confidenceNetwork score: 59

1

Related topics

3

Evidence pairs

218

Related studies

High relevance in at least one topic

Why it is useful

  • Contributes to 3 evidence relationships
  • Includes primary outcome data
  • Linked to 1 direct semantic evidence topic

Topic contributions

Evidence topic

Contributes evidence

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Primary evidence

Evidence topic

Weight Loss

matched_outcome

Core evidence

Study findings

The primary outcomes reported in this study.

Muscular strength

Animal Protein Diet → Muscular strength

Animal Protein Diet → Muscular strength

Evidence Intelligence™
EvidenceScore™
Emerging
Score 59 · Based on 1 study
ImpactScore™
100
Very Positive
ConsistencyScore™
unclear
Not enough independent studies
Supporting studies: Based on 1 study
Add to Evidence Tracker

Position sense at the knee joint

Animal Protein Diet → Position sense at the knee joint

Animal Protein Diet → Position sense at the knee joint

Evidence Intelligence™
EvidenceScore™
Emerging
Score 59 · Based on 1 study
ImpactScore™
50
Neutral
ConsistencyScore™
unclear
Not enough independent studies
Supporting studies: Based on 1 study
Add to Evidence Tracker

Lean body mass

Standard diet → Lean body mass

Standard diet → Lean body mass

Evidence Intelligence™
EvidenceScore™
Emerging
Score 59 · Based on 1 study
ImpactScore™
25
Negative
ConsistencyScore™
unclear
Not enough independent studies
Supporting studies: Based on 1 study
Add to Evidence Tracker

Evidence Library

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evidence suggest

Evidence Suggest

  • Knee extension strength increased by 3.4 kg with higher protein intake (p < 0.001).
  • Shoulder extension strength increased by 2.5 kg with higher protein intake (p < 0.001).
  • Appendicular lean mass decreased significantly in the control group (p < 0.001).
who this applies

Who this applies to

  • Elderly individuals aged 65 and older.
  • Patients diagnosed with Type 2 diabetes.
  • Individuals seeking to improve muscle strength through dietary changes.
keep in mind

Keep in Mind

  • Findings are specific to elderly individuals with Type 2 diabetes.
  • The study did not assess long-term effects of dietary changes.
  • Results may vary based on individual dietary adherence and lifestyle factors.
between the lines

Between the Lines

  • The study's sample size may limit generalizability.
  • Results may not apply to younger populations or those without diabetes.
  • The effect of dietary adherence was not directly measured.

Evidence Library

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Connected Evidence

Explore related studies, evidence collections, and research questions.

Relationships organized using the Dediabetes Evidence Intelligence™ framework.

This study contributes to evidence on Animal Protein Diet and Muscular Strength, Animal Protein Diet and Position sense at the knee joint.

Related evidence relationships

Explore in Evidence Explorer

This study contributes to the evidence on the following intervention-outcome relationships.

Questions answered by this study

Generated from the study's connected evidence using Evidence Intelligence™.

Does Animal Protein Diet improve muscular strength?

Emerging Evidence

Animal Protein Diet appears to improve Muscular strength.

ConsistencyScore™: Consistency cannot yet be determined from the available evidence.

Ranked evidence signals

  1. 1

    Muscular strength

    EvidenceScore™ Emerging | EvidenceScore™ 59.0 | strong positive | ConsistencyScore™ Unclear | 1 study

Why this answer: This answer is based on a single supporting study.

Limitations

  • Only one supporting study is available.
  • Consistency cannot yet be determined.
  • Population details are unavailable.
1 supporting studyUpdated: Aug 2026

Does Animal Protein Diet improve position sense at the knee joint?

Emerging Evidence

Current evidence does not show a clear benefit of Animal Protein Diet for Position sense at the knee joint.

ConsistencyScore™: Consistency cannot yet be determined from the available evidence.

Ranked evidence signals

  1. 1

    Position sense at the knee joint

    EvidenceScore™ Emerging | EvidenceScore™ 59.0 | neutral | ConsistencyScore™ Unclear | 1 study

Why this answer: This answer is based on a single supporting study.

Limitations

  • Only one supporting study is available.
  • Consistency cannot yet be determined.
  • Population details are unavailable.
1 supporting studyUpdated: Aug 2026

Does Standard diet affect lean body mass?

Emerging Evidence

Standard diet may worsen Lean body mass or be associated with harm.

ConsistencyScore™: Consistency cannot yet be determined from the available evidence.

Ranked evidence signals

  1. 1

    Lean body mass

    EvidenceScore™ Emerging | EvidenceScore™ 59.0 | moderate negative | ConsistencyScore™ Unclear | 1 study

Why this answer: This answer is based on a single supporting study.

Limitations

  • Only one supporting study is available.
  • Consistency cannot yet be determined.
  • Population details are unavailable.
1 supporting studyUpdated: Aug 2026
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