diff --git a/backend/services/memberService.js b/backend/services/memberService.js
index 8f2da14..1010a5d 100644
--- a/backend/services/memberService.js
+++ b/backend/services/memberService.js
@@ -70,6 +70,21 @@ class MemberService {
                     }));
                 }
 
+                // Berechne Trainingsteilnahmen
+                const trainingParticipations = await Participant.count({
+                    include: [{
+                        model: DiaryDate,
+                        as: 'diaryDate',
+                        where: {
+                            clubId: clubId
+                        }
+                    }],
+                    where: {
+                        memberId: member.id
+                    }
+                });
+                memberJson.trainingParticipations = trainingParticipations;
+
                 const imageData = await this._prepareMemberImages(member, { forceReload: true });
                 memberJson.images = imageData.images;
                 memberJson.primaryImageId = imageData.primaryImageId;
diff --git a/frontend/src/views/DiaryView.vue b/frontend/src/views/DiaryView.vue
index f18a90a..2977401 100644
--- a/frontend/src/views/DiaryView.vue
+++ b/frontend/src/views/DiaryView.vue
@@ -389,11 +389,15 @@
                                 <input type="checkbox" :value="member.id" @change="toggleParticipant(member.id)"
                                     :checked="isParticipant(member.id)">
                             </label>
-                            <span class="clickable participant-name" @click.stop="openNotesModal(member)">{{
+                            <span class="clickable participant-name" @click.stop="openNotesModal(member)">
+                                <span v-if="member && member.testMembership && member.trainingParticipations >= 6" class="warning-icon warning-icon-severe" title="6 oder mehr Trainingsteilnahmen">🛑</span>
+                                <span v-else-if="member && member.testMembership && member.trainingParticipations >= 3" class="warning-icon" title="3 oder mehr Trainingsteilnahmen">⚠️</span>
+                                {{
                                     member ? member.firstName : ''
                                 }} {{
                                     member ? member.lastName : ''
-                                }}</span>
+                                }}
+                            </span>
                             <div class="participant-actions">
                                 <!-- Gruppenzuordnung für aktive Teilnehmer -->
                                 <select v-if="isParticipant(member.id) && groups.length > 0"
@@ -2581,6 +2585,27 @@ li.participant-row .participant-actions {
     margin-left: 0.25rem;
 }
 
+.warning-icon {
+    margin-right: 0.25rem;
+    font-size: 0.8rem;
+}
+
+.warning-icon-severe {
+    font-size: 0.8rem;
+    animation: pulse-warning 2s infinite;
+}
+
+@keyframes pulse-warning {
+    0%, 100% {
+        opacity: 1;
+        transform: scale(1);
+    }
+    50% {
+        opacity: 0.7;
+        transform: scale(1.1);
+    }
+}
+
 .multiselect {
     margin-bottom: 10px;
     width: 100%;
diff --git a/frontend/src/views/MembersView.vue b/frontend/src/views/MembersView.vue
index 3d2667f..b3fcc7c 100644
--- a/frontend/src/views/MembersView.vue
+++ b/frontend/src/views/MembersView.vue
@@ -177,7 +177,8 @@
                             <td>
                                 <span class="gender-symbol" :class="['gender-' + (member.gender || 'unknown'), { 'is-inactive': !member.active }]" :title="labelGender(member.gender)">{{ genderSymbol(member.gender) }}</span>
                                 <span class="gender-name" :class="['gender-' + (member.gender || 'unknown'), { 'is-inactive': !member.active }]">
-                                    <span v-if="member.testMembership && member.trainingParticipations >= 5" class="warning-icon" title="5 oder mehr Trainingsteilnahmen">⚠️</span>
+                                    <span v-if="member.testMembership && member.trainingParticipations >= 6" class="warning-icon warning-icon-severe" title="6 oder mehr Trainingsteilnahmen">🛑</span>
+                                    <span v-else-if="member.testMembership && member.trainingParticipations >= 3" class="warning-icon" title="3 oder mehr Trainingsteilnahmen">⚠️</span>
                                     {{ member.lastName }}, {{ member.firstName }}
                                     <span v-if="!member.active && showInactiveMembers" class="inactive-badge">inaktiv</span>
                                 </span>
@@ -1919,7 +1920,23 @@ table td {
 
 .warning-icon {
     margin-right: 0.25rem;
-    font-size: 1.1em;
+    font-size: 0.8rem;
+}
+
+.warning-icon-severe {
+    font-size: 0.8rem;
+    animation: pulse-warning 2s infinite;
+}
+
+@keyframes pulse-warning {
+    0%, 100% {
+        opacity: 1;
+        transform: scale(1);
+    }
+    50% {
+        opacity: 0.7;
+        transform: scale(1.1);
+    }
 }
 
         .member-image-gallery {